An automatic clamping device

Abstract

The present invention discloses an automatic clamping device, which includes a frame. A conveyor chain is provided on the frame, and multiple groups of clamping molds are fixedly laid on the conveyor chain. A clamping mechanism is provided above the conveyor chain. The clamping mechanism is fixedly connected to the frame and is adapted to the clamping molds. The clamping mold includes a fixed block and a movable block. Both ends of the fixed block are fixedly connected to the conveyor chain. A sliding rod is provided on one side of the fixed block. The movable block is sleeved on the sliding rod to form a sliding connection. Multiple curved surface grooves are provided on the opposite sides of the fixed block and the movable block. A bearing plate is provided below the fixed block and the movable block. A locking mechanism is provided between the fixed block and the movable block. By applying pressure to the movable block and the fixed block in the horizontal direction, the product can be extruded in the curved surface grooves of the movable block and the fixed block, without affecting the working life of the conveyor chain. The locking mechanism mechanically applies continuous pressure to the product to achieve pressure holding and shaping, greatly improving the processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automated machinery, and particularly to an automatic clamping device. Background Art

[0002] Automated machinery is widely used in industries such as industry, agriculture, military, scientific research, transportation, commerce, healthcare, services, and households. The adoption of automation technology can not only liberate people from heavy physical labor, some mental labor, and harsh and dangerous working environments, but also greatly improve labor productivity.

[0003] Automated machinery organically combines traditional manufacturing technologies with modern information technologies, management technologies, automation technologies, and systems engineering technologies. Through computer technology, the organization, operation, management, and technologies related to enterprise products throughout their entire life cycle are organically integrated and optimized for operation, achieving informatization, intelligentization, and integrated optimization throughout the entire life cycle of enterprise products to achieve the goals of fast product listing, good service, high quality, and low cost, thereby improving the flexibility, robustness, and agility of enterprises.

[0004] Existing automated pressing and shaping equipment on the market all press product raw materials into molds through hydraulic mechanisms for shaping. For example, patent publication number: CN117814493A discloses "An Automated Continuous Seed Pressing Equipment". One end of the mounting frame is provided with a material sorting mechanism, and a seed steaming mechanism is spaced below the output end of the material sorting mechanism. Shifting mechanisms are slidably provided above both ends of the seed steaming mechanism, and the shifting mechanisms are relatively slidably mounted on the top of the mounting frame; the output end of the seed steaming mechanism is adaptively installed with a pressing and flipping mechanism, and a transportation and processing mechanism is provided below the pressing and flipping mechanism, and the transportation and processing mechanism operates in the opposite direction to the seed steaming mechanism. In the above structure, when the pressing and flipping mechanism presses and shapes the seeds, the downward pressure will be directly transmitted to the shifting mechanism, resulting in a significant reduction in the working life of the shifting mechanism. Moreover, if there is a need for long-term pressure holding, the shifting mechanism needs to be stopped, consuming a large amount of time for pressure holding and greatly delaying the processing process, with low processing efficiency. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the objectives of the present invention are:

[0006] To solve the problem that the working life of the conveying mechanism is not high due to the downward pressure of existing automated downward pressing and shaping equipment being transmitted to the conveying mechanism;

[0007] To solve the problem of low processing efficiency caused by the need to stop the operation of the conveying mechanism during pressure holding in existing automated downward pressing and shaping equipment.

[0008] The technical solution of the present invention is:

[0009] The present invention provides an automatic clamping device, which includes a frame. A conveyor chain is arranged on the frame, and multiple groups of clamping dies are fixedly laid on the conveyor chain. A clamping mechanism is arranged above the conveyor chain, and the clamping mechanism is fixedly connected to the frame and is adapted to the clamping dies.

[0010] The clamping die includes a fixed block and a movable block. Both ends of the fixed block are fixedly connected to the conveyor chain. A sliding rod is arranged on one side of the fixed block, and the movable block is sleeved on the sliding rod to form a sliding connection. Multiple curved grooves for clamping are arranged on the opposite sides of the fixed block and the movable block. A bearing plate is arranged below the fixed block and the movable block, and a locking mechanism is arranged between the fixed block and the movable block.

[0011] Preferably, the locking mechanism includes a dial rod and a locking rod. One end of the locking rod is rotatably connected to the end face of the movable block, a locking groove is arranged at the other end of the locking rod, and locking protrusions adapted to the locking groove are arranged at both ends of the fixed block. One end of the dial rod is rotatably connected to both ends of the fixed block, and the middle section of the dial rod is rotatably connected to the middle section of the locking rod.

[0012] Preferably, a guiding groove hole is arranged in the middle section of the locking rod, a bolt is arranged in the middle section of the dial rod, and the bolt passes through the guiding groove hole and can rotate and slide in the guiding groove hole.

[0013] Preferably, the bearing plate includes a first bearing plate and a second bearing plate. One end of the first bearing plate is fixedly connected to the fixed block, and the other end of the first bearing plate faces the movable block. One end of the second bearing plate is fixedly connected to the movable block, and the other end of the second bearing plate faces the fixed block; the first bearing plate and the second bearing plate are arranged alternately.

[0014] Preferably, the sum of the widths of the first bearing plate and the second bearing plate is adapted to the length of the curved groove.

[0015] Preferably, a limiting step is arranged upward at the suspended end of the first bearing plate and the second bearing plate, and a step groove for the limiting step to pass through is arranged on the lower surfaces of the fixed block and the movable block.

[0016] Preferably, a discharging protrusion is arranged upward at the suspended end of the first bearing plate and the second bearing plate, and a guiding groove for the discharging protrusion to pass through is arranged on the lower surfaces of the fixed block and the movable block.

[0017] Preferably, a limiting baffle is arranged at the end of the sliding rod far from the fixed block.

[0018] Preferably, a discharge rod is provided below the conveyor chain. The discharge rod is horizontally arranged. One end of the discharge rod is fixedly connected to the frame, and the other end is suspended for abutting against the dial rod. A hopper is provided below the discharge rod.

[0019] Preferably, the hopper includes an inner hopper and an outer hopper. A ventilation chamber is formed between the inner hopper and the outer hopper. An air inlet is provided on the outer hopper, and an air outlet is provided below the hopper.

[0020] Preferably, the hopper further includes a connecting flange and a bottom flange. The upper ends of both the inner hopper and the outer hopper are fixedly connected to one side of the connecting flange, and the joints of the inner hopper, the outer hopper and the connecting flange are sealed. An air inlet is provided on the outer side wall of the outer hopper. The outer edge of the bottom flange is connected and sealed to the lower end of the outer hopper, and a gap is left between the inner edge of the bottom flange and the lower end of the inner hopper to form an air outlet.

[0021] Preferably, a plurality of first air guiding plates are provided on one side of the inner hopper close to the ventilation chamber; the plurality of first air guiding plates are horizontally arranged and are distributed at intervals around the side wall of the inner hopper.

[0022] Preferably, a plurality of second air guiding plates are provided on one side of the bottom flange close to the ventilation chamber; the plurality of second air guiding plates are vertically arranged and are radially distributed around the hole at the center of the bottom flange.

[0023] Preferably, a handrail frame is provided on the outer side of the connecting flange, and the handrail frames are symmetrically arranged.

[0024] Preferably, both the inner hopper and the outer hopper are stainless steel thin-walled bodies.

[0025] Preferably, the clamping mechanism includes a lifting cylinder, a clamping electric cylinder, a clamping fixed plate and a clamping movable plate. The lifting cylinder is vertically arranged. The cylinder body of the lifting cylinder is fixedly connected to the frame, and the rod body of the lifting cylinder is connected to the clamping fixed plate. The clamping electric cylinder is horizontally arranged. The cylinder body of the clamping electric cylinder is fixedly connected to the frame, and the rod body of the clamping electric cylinder is connected to the clamping movable plate. The clamping fixed plate is slidably connected to the clamping movable plate. A fixed claw is provided below the clamping fixed plate, and a movable claw is provided on the lower surface of the clamping movable plate. The fixed claw and the movable claw cooperate with each other to clamp the mold.

[0026] Preferably, at least one vertical slot hole is provided in the clamping movable plate in the horizontal direction. The rod body of the clamping electric cylinder is connected to the clamping movable plate through the vertical slot hole. A slide rail is provided on the clamping fixed plate, and the clamping movable plate is slidably connected to the clamping fixed plate through the slide rail.

[0027] Preferably, a plurality of reinforcing ribs are provided on the clamping movable plate, a reinforcing steel pipe is provided above the reinforcing ribs, and the reinforcing steel pipe is perpendicular to the reinforcing ribs.

[0028] Preferably, a pre-pushing mechanism is provided above the conveying chain. The pre-pushing mechanism is arranged upstream of the clamping mechanism. The pre-pushing mechanism includes a pre-pushing cylinder and a pre-pushing tooth plate. The cylinder body of the pre-pushing cylinder is fixedly connected to the machine frame. The cylinder body of the pre-pushing cylinder is connected to the pre-pushing tooth plate, and pre-pushing teeth are provided on the lower surface of the pre-pushing tooth plate.

[0029] Preferably, an adjustment assembly is further provided on the pre-pushing mechanism. The adjustment assembly includes an adjustment motor, a lead screw and a mounting plate. The adjustment motor is fixedly connected to the machine frame. The output shaft of the adjustment motor is connected to the lead screw. The lead screw is rotatably connected to the machine frame. A lead screw nut is sleeved on the lead screw. The mounting plate is fixedly connected to the lead screw nut. The pre-pushing cylinder is fixedly connected to the mounting plate. A positioning detector is provided on the machine frame, and the positioning detector is electrically connected to the pre-pushing mechanism.

[0030] Preferably, a flattening mechanism is further provided above the conveying chain. The flattening mechanism is arranged upstream of the pre-pushing mechanism. The flattening mechanism includes a mounting rod. The mounting rod is horizontally arranged and fixedly connected to the machine frame. At least one group of rollers is provided below the mounting rod, and the rotation direction of the rollers is the same as the traveling direction of the conveying chain.

[0031] The present invention also provides an automatic clamping process, which is applied to the above automatic clamping device, and includes the following steps:

[0032] S1. Feeding: Put the product raw materials into the clamping die through manual or / and automatic feeding equipment;

[0033] S2. Flattening: Start the conveying chain to drive the clamping die to pass through the rolling of the flattening mechanism to achieve the flat posture of the clamping die;

[0034] S3. Pre-pushing: Adjust the gap between the clamping dies through the pre-pushing mechanism;

[0035] S4. Clamping and shaping: Clamp the clamping die through the clamping mechanism, and the clamping mechanism synchronously triggers the self-locking function of the clamping die to clamp and shape the product;

[0036] S5. Heating: Convey the clamping die in the self-locked state to the heating chamber through the conveying chain for heating;

[0037] S6. Unloading: The conveying chain conveys the clamping die carrying the product to the unloading position, and the locking state of the locking mechanism is released through the cooperation of the dial rod and the unloading rod. The product falls into the hopper by gravity to complete the unloading;

[0038] S7. Cooling and shaping: While discharging the product, introduce cooling gas into the hopper to assist in cooling and shaping the product.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] 1. The present invention provides an automatic clamping device for shaping the product seeds. By changing the direction of the shaping pressure from the conventional vertical direction to the horizontal direction, the structural design difficulty of the automatic conveying is effectively simplified, and the working life of the automatic conveying line is greatly improved.

[0041] 2. The present invention provides an automatic clamping device, including a clamping die, which can mechanically apply pressure to the product continuously through a locking mechanism to achieve pressure-holding shaping. It can perform pressure-holding shaping while transporting the product seeds, avoiding the drawback that the conveyor belt needs to stop running during pressure setting in the existing pressure setting equipment, greatly saving the processing and transportation time, and improving the processing efficiency.

[0042] The following further describes the detailed structure of the present invention in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0043] Figure 1 The first overall external view schematic diagram of the automatic clamping device of the present invention;

[0044] Figure 2 The second overall external view schematic diagram of the automatic clamping device of the present invention;

[0045] Figure 3 The first side view of the automatic clamping device of the present invention;

[0046] Figure 4 The second side view of the automatic clamping device of the present invention;

[0047] Figure 5 The structural schematic diagram of the clamping die of the present invention;

[0048] Figure 6 For Figure 5 The partial enlarged schematic diagram at A;

[0049] Figure 7 The structural schematic diagram of the locking mechanism of the present invention;

[0050] Figure 8 The structural schematic diagram of the locking rod of the present invention;

[0051] Figure 9 The first structural schematic diagram of the clamping mechanism of the present invention;

[0052] Figure 10 The partial sectional view schematic diagram of the clamping mechanism of the present invention;

[0053] Figure 11 The second structural schematic diagram of the clamping mechanism of the present invention;

[0054] Figure 12 It is a structural schematic diagram of the hopper of the present invention;

[0055] Figure 13 It is a partial cross-sectional schematic diagram of the hopper of the present invention;

[0056] Figure 14 for Figure 13 A local enlarged schematic diagram of point B;

[0057] Figure 15 It is a structural schematic diagram of the pre-pushing mechanism of the present invention;

[0058] Figure 16 It is a cross-sectional schematic diagram of the pre-pushing mechanism of the present invention;

[0059] Figure 17 It is a structural schematic diagram of the flattening mechanism of the present invention;

[0060] Figure 18 It is a side view of the flattening mechanism of the present invention;

[0061] Name of each component and corresponding serial number:

[0062] 1. Frame; 2. Conveyor chain;

[0063] 3. Clamping mold; 31. Fixed block; 32. Movable block; 33. Sliding rod; 34. Curved groove; 35. First bearing plate; 36. Second bearing plate; 37. Locking mechanism; 371. Push rod; 372. Locking rod; 373. Locking groove; 374. Locking protrusion; 375. Guide slot hole; 38. Discharge protrusion;

[0064] 4. Clamping mechanism; 41. Lifting cylinder; 42. Clamping electric cylinder; 43. Clamping fixed plate; 44. Clamping movable plate; 45. Fixed claw; 46. Movable claw; 47. Vertical slot; 48. Slide rail; 49. Reinforcement rib; 410. Reinforced steel pipe;

[0065] 5. Pre-push mechanism; 51. Pre-push cylinder; 52. Pre-push tooth plate; 53. Pre-push tooth; 54. Adjustment motor; 55. Screw; 56. Screw nut; 57. Mounting plate; 58. Positioning detector;

[0066] 6. Flattening mechanism; 61. Mounting rod; 62. Roller;

[0067] 7. Heating chamber;

[0068] 8. Discharge rod;

[0069] 9. Hopper; 91. Inner hopper; 92. Outer hopper; 93. Connecting flange; 94. Ventilation chamber; 95. Air inlet; 96. Bottom flange; 97. Air outlet; 98. First air deflector; 99. Second air deflector; 910. Handrail frame;

[0070] 10. Control terminal. Detailed implementation manners

[0071] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations. The following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0072] Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the ordinary meanings understood by those of ordinary skill in the art in the field to which this disclosure belongs. The words such as "including" or "comprising" used in this disclosure mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", and "right" are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly; the vertical and horizontal arrangements mentioned in the text are all relative to the horizontal plane.

[0073] As Figures 1-4 shown: The present invention provides an automatic clamping device, which includes a frame 1. A conveyor chain 2 is provided on the frame 1. A plurality of sets of clamping dies 3 are fixedly laid on the conveyor chain 2. A clamping mechanism 4 is provided above the conveyor chain 2. The clamping mechanism 4 is fixedly connected to the frame 1 and is adapted to the clamping dies 3. The clamping dies 3 rotate cyclically with the conveyor chain 2 to achieve the purpose of automatically conveying product seeds to each functional area, and at the same time, the clamping dies 3 can be recycled.

[0074] As Figure 5 and Figure 6As shown in the figure, the clamp-type mold 3 includes a fixed block 31 and a movable block 32. Both ends of the fixed block 31 are fixedly connected to the conveyor chain 2. A slide bar 33 is provided on one side of the fixed block 31. The movable block 32 is sleeved on the slide bar 33 to form a sliding connection. Multiple curved grooves 34 for clamping are provided on the opposite sides of the fixed block 31 and the movable block 32. A bearing plate is provided below the fixed block 31 and the movable block 32. A locking mechanism 37 is provided between the fixed block 31 and the movable block 32. Product seeds can be placed on the bearing plate. By applying pressure to the movable block 32 in the direction of the fixed block 31, the product seeds can be extruded in the curved grooves 34 on the movable block 32 and the fixed block 31. At the same time, the locking mechanism 37 at both ends of the movable block 32 can lock the movable block 32 and the fixed block 31, so that the product seeds are in a continuously extruded state, effectively reducing the phenomenon of product seed rebound.

[0075] Further, in order to better center the product seeds when placing them, in this embodiment, the bearing plate includes a first bearing plate 35 and a second bearing plate 36. One end of the first bearing plate 35 is fixedly connected to the fixed block 31, and the other end of the first bearing plate 35 faces the movable block 32. One end of the second bearing plate 36 is fixedly connected to the movable block 32, and the other end of the second bearing plate 36 faces the fixed block 31; the first bearing plate 35 and the second bearing plate 36 are arranged alternately; the sum of the widths of the first bearing plate 35 and the second bearing plate 36 is adapted to the length of the curved groove 34. The suspended ends of the first bearing plate 35 and the second bearing plate 36 are provided with limiting steps upward, and the lower surfaces of the fixed block 31 and the movable block 32 are provided with step grooves for the limiting steps to pass through. When the movable block 32 and the fixed block 31 move relatively, the product seeds are always supported by the first bearing plate 35 and the second bearing plate 36, and the step grooves can better center the product seeds when placing them.

[0076] Further, the suspended ends of the first bearing plate 35 and the second bearing plate 36 are provided with unloading bumps 38 upward, and the lower surfaces of the fixed block 31 and the movable block 32 are provided with guiding grooves for the unloading bumps 38 to pass through. When the movable block 32 is released from the locked state, the unloading bump 38 on the first bearing plate 35 can flick the product seeds tightly embedded in the curved groove 34 of the movable block 32 back onto the bearing plate, and the unloading bump 38 on the second bearing plate 36 can flick the product seeds tightly embedded in the curved groove 34 of the fixed block 31 back onto the bearing plate. This process is a fully automatic process without manual operation, greatly improving the production and processing efficiency.

[0077] Further, a limiting baffle is provided at the end of the slide bar 33 away from the fixed block 31, which can effectively prevent the movable block 32 from separating from the slide bar 33.

[0078] Specifically, a discharge rod 8 is provided below the conveyor chain 2. The discharge rod 8 is horizontally arranged. One end of the discharge rod 8 is fixedly connected to the frame 1, and the other end is suspended for abutting against the dial rod 371. A hopper 9 is provided below the discharge rod 8. The discharge rod 8 is arranged in the traveling direction of the clamping die 3. When the clamping die 3 in the self-locking state is conveyed to the installation position of the discharge rod 8 along with the conveyor chain 2, the discharge rod 8 will block the advancing direction of the dial rod 371. When the clamping die 3 continues to travel forward, the dial rod 371 will contact the discharge rod 8 and rotate, enabling the locking rod 372 to disengage from the locking projection 374, completing automatic unlocking. At this time, the opening of the clamping die 3 is in a downward state, and the product seeds in the curved surface groove 34 will fall into the hopper 9 under the action of gravity, completing automatic discharging.

[0079] As Figure 7 shown, specifically, the locking mechanism 37 includes a dial rod 371 and a locking rod 372. One end of the locking rod 372 is rotatably connected to the end face of the movable block 32. A locking groove 373 is provided at the other end of the locking rod 372. Locking projections 374 adapted to the locking groove 373 are provided at both ends of the fixed block 31. One end of the dial rod 371 is rotatably connected to both ends of the fixed block 31, and the middle section of the dial rod 371 is rotatably connected to the middle section of the locking rod 372. When the movable block 32 is pressed, the locking groove 373 on the locking rod 372 automatically cooperates with the locking projection 374 under the influence of the movable block 32, causing the locking projection 374 to be inserted into the locking groove 373 to complete locking.

[0080] As Figure 8 shown, specifically, a guiding groove hole 375 is provided in the middle section of the locking rod 372, and a bolt is provided in the middle section of the dial rod 371. The bolt passes through the guiding groove hole 375, and the bolt can rotate and slide in the guiding groove hole 375. When the product seeds are extruded, the force of the product seeds rebounding can be relied on to apply a pre-tightening force to the locking rod 372 and the locking projection 374, making the locking effect between the locking rod 372 and the locking projection 374 more stable. During this process, the movable block 32 needs some movement. By providing the guiding groove hole 375, the dial rod 371 can compensate for this part of the movement amount in the guiding groove hole 375, preventing the movement of the movable block 32 in the locked state from being affected due to the limitation of the length of the dial rod 371.

[0081] As Figures 12-14As shown in the figure, specifically, the hopper 9 includes an inner hopper 91, an outer hopper 92 and a connecting flange 93. The upper ends of the inner hopper 91 and the outer hopper 92 are fixedly connected to one side of the connecting flange 93, and the joints of the inner hopper 91, the outer hopper 92 and the connecting flange 93 are sealed. A ventilation chamber 94 is formed between the inner hopper 91 and the outer hopper 92, and an air inlet 95 is provided on the outer side wall of the outer hopper 92. It also includes a bottom flange 96. The outer edge of the bottom flange 96 is connected and sealed to the lower end of the outer hopper 92, and a gap is left between the inner edge of the bottom flange 96 and the lower end of the inner hopper 91 to form an air outlet 97. When the product seeds are unloaded and fall into the hopper 9, cold air can be directly introduced into the ventilation chamber 94 from the air inlet 95. The continuous cold air can keep the hopper 9 in a low-temperature state all the time. When the product seeds fall into the hopper 9 and come into contact with the hopper 9, heat exchange occurs, realizing the primary cooling of the product seeds. Further, when the product seeds pass through the hopper 9 and fall onto the conveyor belt of the collection container or the next process, the air outlet 97 below the hopper 9 will continuously blow air on the product seeds to realize the rapid cooling and shaping of the product seeds.

[0082] Specifically, a plurality of first air guide plates 98 are provided on one side of the inner hopper 91 close to the ventilation chamber 94; the plurality of first air guide plates 98 are horizontally arranged and are distributed at intervals around the side wall of the inner hopper 91. Through the first air guide plates 98, the air entering the ventilation cavity from a single air inlet 95 can be dispersed and guided to blow the entire ventilation cavity, facilitating better transfer of the heat brought by the product seeds to the hopper 9.

[0083] Specifically, a plurality of second air guide plates 99 are provided on one side of the bottom flange 96 close to the ventilation chamber 94; the plurality of second air guide plates are vertically arranged and are radially distributed around the hole in the center of the bottom flange 96. The cold air in the ventilation chamber 94 can be guided in the vertical direction to the air outlet 97, preventing the cold air from being discharged from the air outlet 97 in a way of overflowing in various directions and affecting the cooling efficiency.

[0084] Specifically, a handrail frame 910 is provided on the outer side of the connecting flange 93. The handrail frames 910 are symmetrically arranged, facilitating the staff to take and operate the hopper 9.

[0085] Specifically, both the inner hopper 91 and the outer hopper 92 are stainless steel thin-walled bodies, which have many advantages such as low cost, good heat conduction performance, and high rust prevention cost performance.

[0086] The clamping mechanism 4 of the present invention can select any device on the market that can realize the clamping function. In this embodiment, the clamping mechanism 4 is specifically, such as Figures 9-11As shown in the figure, the clamping mechanism 4 includes a lifting cylinder 41, a clamping electric cylinder 42, a clamping fixed plate 43 and a clamping movable plate 44. A fixed claw 45 is provided on the clamping fixed plate 43, and a movable claw 46 is provided on the clamping movable plate 44. The lifting cylinder 41 is vertically installed. The cylinder body of the lifting cylinder 41 is fixedly connected to the frame 1, and the rod body of the lifting cylinder 41 is fixedly connected to the clamping fixed plate 43. The cylinder body of the clamping electric cylinder 42 is horizontally arranged, and the cylinder body of the clamping electric cylinder 42 is fixedly connected to the frame 1. The movable claw 46 and the fixed claw 45 cooperate with each other to clamp the clamping die 3. When the clamping die 3 moves to directly below the clamping mechanism 4, the lifting cylinder 41 drives the clamping fixed plate 43 to descend, and the fixed claw 45 extends into the gap between the clamping dies 3 and abuts against the fixed block 31; the movable claw 46 also extends into the gap between the clamping dies 3 and abuts against the movable block 32; the clamping electric cylinder 42 drives the clamping movable plate 44 to move on the clamping fixed plate 43, so that the movable claw 46 and the fixed claw 45 clamp and press the movable block 32 and the fixed block 31, and trigger the self-locking of the clamping die 3, realizing the clamping of the product seed material.

[0087] The clamping movable plate 44 is provided with at least one vertical slot 47 in the horizontal direction. The rod body of the clamping electric cylinder 42 is connected to the clamping movable plate 44 through the vertical slot 47, which is convenient for the rod body of the clamping electric cylinder 42 to adjust its position in the vertical slot 47 when the clamping movable plate 44 moves up and down with the lifting cylinder 41. A slide rail 48 is provided on the clamping fixed plate 43, and the clamping movable plate 44 is slidably connected to the clamping fixed plate 43 through the slide rail 48. The clamping fixed plate 43 is provided with a through hole for the movable claw 46 to pass through.

[0088] Specifically, a plurality of reinforcing ribs 49 are provided on the clamping movable plate 44, and a reinforcing steel pipe 410 is provided above the reinforcing ribs 49. The reinforcing steel pipe 410 is perpendicular to the reinforcing ribs 49. The reinforcing steel pipe 410 and the reinforcing ribs 49 improve the rigidity of the clamping movable plate 44 and prevent the clamping movable plate 44 from bending and deforming during long-term work.

[0089] Specifically, in the actual working condition, since the conveyor chain 2 will vibrate during work, which will cause the distance between the clamping dies 3 to change. To ensure that the movable claw 46 and the fixed claw 45 of the clamping mechanism 4 can smoothly extend into the gap between the clamping dies 3, as Figure 15 and Figure 16As shown in the figure, a pre-pushing mechanism 5 is provided above the conveying chain 2 of the present invention. The pre-pushing mechanism 5 is arranged upstream of the clamping mechanism 4. The pre-pushing mechanism 5 includes at least one pre-pushing cylinder 51 and a pre-pushing tooth plate 52. The cylinder block of the pre-pushing cylinder 51 is fixedly connected to the frame 1. The cylinder block of the pre-pushing cylinder 51 is connected to the pre-pushing tooth plate 52. The lower surface of the pre-pushing tooth plate 52 is provided with pre-pushing teeth 53. An adjustment assembly is further provided on the pre-pushing mechanism 5. The adjustment assembly includes an adjustment motor 54, a lead screw 55 and a mounting plate 57. The adjustment motor 54 is fixedly connected to the frame 1. The output shaft of the adjustment motor 54 is connected to the lead screw 55. The lead screw 55 is rotatably connected to the frame 1. A lead screw nut 56 is sleeved on the lead screw 55. The mounting plate 57 is fixedly connected to the lead screw nut 56. The pre-pushing cylinder 51 is fixedly connected to the mounting plate 57. A positioning detector 58 is provided on the frame 1. The positioning detector 58 is electrically connected to the pre-pushing mechanism 5. When the clamping die 3 travels to the lower part of the pre-pushing mechanism 5, the positioning detector 58 will perform preliminary positioning and transmit the signal to the control terminal 10. The control terminal 10 controls the adjustment motor 54 to operate so that the pre-pushing teeth 53 under the pre-pushing tooth plate 52 can be aligned with the gap between the clamping dies 3. Subsequently, the pre-pushing tooth plate 52 is pressed downward by the pre-pushing cylinder 51, and the clamping die 3 is pushed forward by the adjustment motor 54 to complete the pre-pushing action, so as to keep the gap between the clamping dies 3 at a width that allows the movable claw 46 and the fixed claw 45 to smoothly extend in.

[0090] It should be noted that the positioning monitor can be any infrared detector, ultraviolet detector or other detector with the same function available on the existing market. The control terminal 10 is a common control device such as a PC or a PLC available on the market.

[0091] Specifically, in the actual working condition, the clamping die 3 will rotate cyclically with the conveying chain 2. When the clamping die 3 changes from the bent part to the horizontal part on the conveying chain 2, the clamping die 3 will retain a certain angle, resulting in a certain angle of inclination of the clamping die 3. In order to adjust the attitude of the clamping die 3, in this embodiment, a flattening mechanism 6 is further provided above the conveying chain 2, as Figure 17 and Figure 18 shown. The flattening mechanism 6 is arranged upstream of the pre-pushing mechanism 5. The flattening mechanism 6 includes a mounting rod 61. The mounting rod 61 is horizontally arranged and fixedly connected to the frame 1. At least one group of rollers 62, three groups in this embodiment, are provided below the mounting rod 61. The rotation direction of the rollers 62 is the same as the traveling direction of the conveying chain 2. When the inclined clamping die 3 passes through the flattening mechanism 6, it will pass through the three groups of rollers 62 layer by layer for rolling, gradually reducing the inclination angle of the clamping die 3 until the clamping die 3 is in a horizontal attitude.

[0092] Specifically, a heating chamber 7 is provided downstream of the clamping mechanism 4. A heating source is provided in the heating chamber 7. In this embodiment, the heating source is high-temperature steam introduced into the heating chamber 7. The part of the transmission chain downstream of the clamping mechanism 4 is placed in the heating chamber 7. After the clamping die 3 is clamped by the clamping mechanism 4 into a locked state, the clamping die 3 is transported by the conveying chain 2 to the heating chamber 7 for heating, achieving the effect of high-temperature pressure holding, enhancing the shaping effect of the product seeds, avoiding the drawback that the existing automated shaping and sizing equipment needs to stop rotating during pressure holding, and greatly improving the processing efficiency.

[0093] The product seed is a product sheet obtained by cutting an ellipsoidal high-cellulose lignin product material into two halves.

[0094] The present invention also provides an automatic clamping process, which is applied to the above-mentioned automatic clamping device and includes the following steps:

[0095] S1. Feeding: The product raw material is put into the clamping die 3 by manual or / and automatic feeding equipment;

[0096] S2. Flattening: Start the conveying chain 2 to drive the clamping die 3 to pass through the three groups of rollers 62 of the flattening mechanism 6 for step-by-step rolling, gradually realizing the flat posture of the clamping die 3;

[0097] S3. Pre-pushing: Adjust the gap between the clamping dies 3 through the pre-pushing mechanism 5;

[0098] S4. Clamping and shaping: Clamp the clamping die 3 through the clamping mechanism 4, and the clamping mechanism 4 synchronously triggers the self-locking function of the clamping die 3 to clamp and shape the product;

[0099] S5. Heating: Convey the clamping die 3 in the self-locked state to the heating chamber 7 through the conveying chain 2 for heating;

[0100] S6. Unloading: The conveying chain 2 conveys the clamping die 3 carrying the product to the unloading position, and the locking state of the locking mechanism 37 is released through the cooperation of the dial rod 371 and the unloading rod 8, and the product falls into the hopper 9 by gravity to complete unloading;

[0101] S7. Cooling and sizing: While unloading, introduce cooling gas into the hopper 9 to assist the product in cooling and sizing.

[0102] The working principle and working process of this embodiment are as follows: the operator can manually or use the existing automatic loading equipment to put the product seed material into the curved groove 34 of the clamping mold 3, and the conveying chain 2 drives the clamping mold 3 to move forward, and successively passes through the flattening mechanism 6 and the pre-pushing mechanism 5 to adjust the posture of the clamping mold 3. When the clamping mold 3 carries the product seed material to the bottom of the clamping mechanism 4 and stops, the clamping mechanism 4 descends and applies horizontal pressure to the movable block 32 and the fixed block 31 of the clamping mold 3 through the movable claw 46 and the fixed claw 45, so that the movable block 32 moves toward the fixed block 31, thereby applying horizontal pressure to the product seed material. At the same time, the locking mechanism 37 between the movable block 32 and the fixed block 31 is triggered, so that the movable block 32 and the fixed block 31 can continue to apply horizontal pressure to the product seed material for shaping. Subsequently, the conveying chain 2 will output the clamping mold 3 in the locked state The product seed material is sent to the heating chamber 7 for heating to improve the deformation ability of the product seed material. After the heating is completed, the conveying chain 2 will continue to transport the clamping mold 3 to the unloading area. When the lever 371 of the locking mechanism 37 of the end face of the clamping mold 3 contacts the unloading rod 8, as the conveying chain 2 moves, the lever 371 is rotated by the unloading rod 8, and the locking mechanism 37 will be unlocked. The movable block 32 gradually moves away from the fixed block 31 as the rotation angle of the lever 371 increases. The unloading protrusion 38 on the first supporting plate 35 and the second supporting plate 36 will push the product seed material off the groove wall of the curved groove 34, and the product seed material will fall into the hopper 9 with gravity to complete the unloading. At the same time, cold air will continue to be introduced into the hopper 9 to quickly cool the hopper 9 and the product seed material, which is convenient for the shaping of the product seed material and reduces the rebound of the product seed material; the clamping mold 3 continues to move with the conveying chain 2 and starts the next round of clamping processing cycle.

[0103] The above is a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes according to the technical solutions and concepts of the present invention, which should be covered by the protection scope of the claims of the present invention.

Claims

1. An automatic clamping device, characterized in that: Used to shape product sheets after cutting an ellipsoidal high-cellulose lignin product material into two halves, comprising a frame (1), a conveyor chain (2) being provided on the frame (1), a plurality of groups of clamping molds (3) being fixedly laid on the conveyor chain (2), a clamping mechanism (4) being provided above the conveyor chain (2), the clamping mechanism (4) being fixedly connected to the frame (1), and the clamping mechanism (4) being adapted to the clamping molds (3); The clamping mold (3) comprises a fixed block (31) and a movable block (32), both ends of the fixed block (31) are fixedly connected to the conveying chain (2), a sliding rod (33) is provided on one side of the fixed block (31), and the movable block (32) is sleeved on the sliding rod (33) to form a sliding connection, a plurality of curved grooves (34) for clamping are provided on the sides opposite to the movable block (32), a bearing plate is provided below the fixed block (31) and the movable block (32), and a locking mechanism (37) is provided between the fixed block (31) and the movable block (32); The clamping mechanism (4) comprises a lifting cylinder (41), a clamping electric cylinder (42), a clamping fixed plate (43) and a clamping movable plate (44); the lifting cylinder (41) is arranged vertically, the cylinder body of the lifting cylinder (41) is fixedly connected to the frame (1), the rod body of the lifting cylinder (41) is connected to the clamping fixed plate (43); the clamping electric cylinder (42) is arranged horizontally, the cylinder body of the clamping electric cylinder (42) is fixedly connected to the frame (1), the rod body of the clamping electric cylinder (42) is connected to the clamping movable plate (44), the clamping fixed plate (43) is slidably connected to the clamping movable plate (44), the lower surface of the clamping fixed plate (43) is provided with a fixed claw (45), the lower surface of the clamping movable plate (44) is provided with a movable claw (46), and the fixed claw (45) and the movable claw (46) cooperate with each other to clamp the clamping mold (3).

2. An automatic clamping device according to claim 1, characterized in that: The locking mechanism (37) comprises a lever (371) and a locking rod (372); one end of the locking rod (372) is rotatably connected to an end surface of the movable block (32); the other end of the locking rod (372) is provided with a locking groove (373); both ends of the fixed block (31) are provided with locking protrusions (374) adapted to the locking groove (373); one end of the lever (371) is rotatably connected to both ends of the fixed block (31); and the middle section of the lever (371) is rotatably connected to the middle section of the locking rod (372).

3. An automatic clamping device according to claim 2, characterized in that: A discharge rod (8) is provided below the conveying chain (2). The discharge rod (8) is arranged horizontally, one end of the discharge rod (8) is fixedly connected to the frame (1), and the other end is suspended in the air. A hopper (9) is provided below the discharge rod (8).

4. An automatic clamping device according to claim 3, characterized in that: The hopper (9) comprises an inner hopper (91) and an outer hopper (92), a ventilation chamber (94) is formed between the inner hopper (91) and the outer hopper (92), an air inlet (95) is provided on the outer hopper (92), and an air outlet (97) is provided below the hopper (9).

5. The automatic clamping device according to claim 4, characterized in that: The hopper (9) further comprises a connecting flange (93) and a bottom flange (96); the upper ends of the inner hopper (91) and the outer hopper (92) are fixedly connected to one side of the connecting flange (93); and the connection between the inner hopper (91), the outer hopper (92) and the connecting flange (93) is sealed; an air inlet (95) is provided on the outer side wall of the outer hopper (92); the outer edge of the bottom flange (96) is connected to and sealed at the lower end of the outer hopper (92); and a gap is left between the inner edge of the bottom flange (96) and the lower end of the inner hopper (91) to form an air outlet (97).

6. The automatic clamping device according to claim 1, characterized in that: The clamping movable plate (44) is provided with at least one vertical slot (47) along the horizontal direction, the rod body of the clamping electric cylinder (42) is connected to the clamping movable plate (44) via the vertical slot (47), the clamping fixed plate (43) is provided with a slide rail (48), and the clamping movable plate (44) is slidably connected to the clamping fixed plate (43) via the slide rail (48).

7. An automatic clamping device according to any one of claims 1 to 6, characterized in that: A plurality of reinforcing ribs (49) are provided on the clamping movable plate (44), a reinforcing steel pipe (410) is provided above the reinforcing ribs (49), and the reinforcing steel pipe (410) and the reinforcing ribs (49) are perpendicular to each other.

8. The automatic clamping device according to claim 1, characterized in that: A pre-push mechanism (5) is provided above the conveying chain (2). The pre-push mechanism (5) is provided upstream of the clamping mechanism (4). The pre-push mechanism (5) comprises a pre-push cylinder (51) and a pre-push tooth plate (52). The cylinder body of the pre-push cylinder (51) is fixedly connected to the frame (1). The cylinder body of the pre-push cylinder (51) is connected to the pre-push tooth plate (52). The lower surface of the pre-push tooth plate (52) is provided with pre-push teeth (53).

9. The automatic clamping device according to claim 8, characterized in that: The pre-pushing mechanism (5) is further provided with an adjustment component, the adjustment component comprising an adjustment motor (54), a screw rod (55) and a mounting plate (57); the adjustment motor (54) is fixedly connected to the frame (1); the output shaft of the adjustment motor (54) is connected to the screw rod (55); the screw rod (55) is rotatably connected to the frame (1); a screw rod nut (56) is sleeved on the screw rod (55); the mounting plate (57) is fixedly connected to the screw rod nut (56); the pre-pushing cylinder (51) is fixedly connected to the mounting plate (57); a positioning detector (58) is provided on the frame (1); and the positioning detector (58) is electrically connected to the pre-pushing mechanism (5).

10. The automatic clamping device according to claim 8, characterized in that: A flattening mechanism (6) is also provided above the conveying chain (2). The flattening mechanism (6) is provided upstream of the pre-pushing mechanism (5). The flattening mechanism (6) comprises a mounting rod (61). The mounting rod (61) is arranged horizontally and fixedly connected to the frame (1). At least one group of rollers (62) is provided below the mounting rod (61). The rotation direction of the rollers (62) is consistent with the travel direction of the conveying chain (2).

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