Raw material hot melting device for plastic processing

Abstract

The application discloses a raw material hot melting device for plastic processing and relates to the field of plastics, which comprises a working base, a mounting frame and a driving device, a mounting table is fixedly installed at the top of the working base, two clamping mechanisms are arranged at the top of the mounting table, the clamping mechanism comprises two first sliding rails, a clamping plate and three clamping heads, a threaded cylinder is arranged between the two first sliding rails, a screw is threadedly connected to the inner wall of the threaded cylinder, two second sliding rails are fixedly installed at one end of the clamping plate, and a movable frame is slidably connected to the inner wall of the second sliding rail. According to the application, the symmetrical two clamping mechanisms are used in cooperation with two first connecting rod components, two second connecting rod components and three clamping heads, so that the clamping mechanism can stably clamp workpieces with a curved surface, the phenomenon that the workpieces are deviated during processing is avoided, and the yield of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of plastics technology, specifically to a raw material hot-melting device for plastic processing. Background Technology

[0002] Plastics are polymeric compounds formed by polymerization of monomers through addition or condensation reactions. They possess moderate resistance to deformation, falling between fibers and rubber, and are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. When bonding two plastic workpieces, a plastic hot melt machine is used to melt the surfaces of the workpieces, and then the heated surfaces are quickly pressed together and cured to form a single unit.

[0003] However, in the existing technology, most plastic hot melt machines often use a method of attaching the clamping block to the surface of the workpiece and then fixing it with a fixing component when clamping plastic workpieces. This method can only stably clamp flat cuboid workpieces. When the workpiece surface has curvature, the clamping block cannot fit tightly with the workpiece, which may cause the workpiece to shift when squeezed by the hot melt machine, resulting in unqualified finished products. Summary of the Invention

[0004] The purpose of this invention is to provide a raw material hot-melt device for plastic processing, in order to solve the problem mentioned in the background art that most plastic hot-melt machines often use a method of attaching the clamping block to the surface of the workpiece and then fixing it with a fixing component when clamping plastic workpieces. This method can only stably clamp flat cuboid workpieces. When the workpiece surface has curvature, the clamping block cannot fit tightly with the workpiece, which may cause the workpiece to shift when squeezed by the hot-melt machine, resulting in unqualified finished products.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a raw material hot-melting device for plastic processing, comprising a working base, a mounting frame, and a driving device. A mounting platform is fixedly installed at the top of the working base. Two clamping mechanisms are provided at the top of the mounting platform. Each clamping mechanism includes two primary slide rails, a clamping plate, and three clamping heads. A threaded cylinder is provided between the two primary slide rails, and a screw is threaded onto the inner wall of the threaded cylinder. Two secondary slide rails are fixedly installed at one end of the clamping plate, and a movable frame is slidably connected to the inner wall of each secondary slide rail. Two primary connecting rod components are rotatably connected to both ends of the clamping plate, and secondary connecting rod components are rotatably connected to the inner walls of the two movable frames. Limiting strips are provided at one end of each of the three clamping heads. One end of two clamping heads is rotatably connected to one end of each of the two primary connecting rod components, and one end of the other clamping head is rotatably connected to one end of each secondary connecting rod component. Two secondary sliders are fixedly connected to the other end of the clamping plate, and one end of each of the secondary sliders is slidably connected to the inner wall of each of the two primary slide rails.

[0006] Preferably, each of the two first slide rails is provided with a limiting mechanism at one end. The limiting mechanism includes a fixed plate and a rotating plate. The top of the fixed plate is provided with a second mounting hole. A spring is provided inside the second mounting hole. One end of the rotating plate is slidably connected to the inner wall of the second mounting hole. The other end of the rotating plate is fixedly connected to a limiting post. The top of the mounting platform is provided with multiple limiting holes. The size of the limiting post is adapted to the size of the limiting hole.

[0007] Preferably, the bottom of the mounting frame is provided with a lifting platform, and four No. 1 mounting holes are opened at the bottom of the lifting platform and near the four corners. A buffer spring is provided inside the No. 1 mounting hole, and a telescopic column is fixedly installed on the top of the inner wall of the No. 1 mounting hole. The outer surface of the telescopic column is movably sleeved with the inner wall of the buffer spring, and a compression column is fixedly installed at the bottom of the telescopic column.

[0008] Preferably, the two ends of the outer surface of the threaded cylinder are fixedly connected to the other ends of the two first slide rails, and one end of the two first connecting rod components is rotatably connected to the inner wall of the two movable frames.

[0009] Preferably, two sliding grooves are provided at the top of the mounting platform and near the two ends of each groove. A first slider is slidably connected to the inner wall of the sliding groove, and the top ends of the four first sliders are respectively fixedly installed to the bottom ends of the four first slide rails.

[0010] Preferably, the two clamping mechanisms are symmetrically arranged at the top of the mounting platform, and the plurality of limiting holes are symmetrically distributed at the top of the mounting platform.

[0011] Preferably, the bottom end of the spring is fixedly connected to the inner wall of the second mounting hole, and the top end of the spring is fixedly connected to one end of the rotating plate.

[0012] Preferably, the top end of the buffer spring is fixedly connected to the top end of the inner wall of the first mounting hole, and the bottom end of the buffer spring is fixedly connected to the top end of the extrusion column.

[0013] Preferably, the bottom end of the mounting frame is fixedly installed to the top end of the working base, and the driving device is located at the top end of the mounting frame.

[0014] Preferably, the telescopic end of the drive device is fixedly installed through the top of the mounting frame and the top of the lifting platform, and a heat-melting component is provided at the bottom of the lifting platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In this invention, by using two symmetrically arranged clamping mechanisms and the cooperation between two first-link components, two second-link components and three clamping heads, the clamping mechanisms can stably clamp workpieces with curved surfaces, avoiding workpiece displacement during processing and improving the yield of the device.

[0017] 2. In this invention, by setting a limiting mechanism, the clamping mechanism can adapt to workpieces of different sizes by utilizing the cooperation between the limiting post and the limiting hole, and the clamping mechanism as a whole can be kept fixed. At the same time, the cooperation between the first slider and the slide groove can facilitate the operator to adjust the clamping mechanism.

[0018] 3. In this invention, by setting buffer springs and extrusion columns, a buffering effect can be achieved when the lifting platform presses down, so that the hot melt components are buffered when extruding the workpiece, preventing the workpiece from being extruded and deformed, and improving the safety of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a raw material hot-melting device for plastic processing according to the present invention;

[0020] Figure 2 This is a front view of a raw material hot-melting device for plastic processing according to the present invention;

[0021] Figure 3 This is a top view of a partial structure of a raw material hot-melting device for plastic processing according to the present invention;

[0022] Figure 4 This is an exploded schematic diagram of the clamping mechanism of a raw material hot-melting device for plastic processing according to the present invention;

[0023] Figure 5This is a cross-sectional front view of a partial structure of a raw material hot-melting device for plastic processing according to the present invention;

[0024] Figure 6 This is a right view of a raw material hot-melting device for plastic processing according to the present invention;

[0025] Figure 7 This is a right-section view of a partial structure of a raw material hot-melting device for plastic processing according to the present invention.

[0026] In the diagram: 1. Working base; 2. Mounting frame; 3. Drive device; 4. Mounting platform; 401. Limiting hole; 402. Slide groove; 403. Slider No. 1; 5. Clamping mechanism; 501. Slide rail No. 1; 502. Threaded cylinder; 503. Screw; 504. Clamping plate; 505. Slide rail No. 2; 506. Movable frame; 507. Linkage component No. 1; 508. Linkage component No. 2; 509. Clamping head; 5010. Limiting strip; 5011. Slider No. 2; 6. Lifting platform; 601. Mounting hole No. 1; 7. Hot melt component; 8. Limiting mechanism; 801. Fixing plate; 802. Mounting hole No. 2; 803. Spring; 804. Rotating plate; 805. Limiting post; 9. Telescopic post; 10. Buffer spring; 11. Extrusion post. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0028] Reference Figure 1-7As shown: A plastic processing raw material hot-melt device includes a working base 1, a mounting frame 2, and a drive device 3. A mounting platform 4 is fixedly mounted on the top of the working base 1. Two clamping mechanisms 5 are provided on the top of the mounting platform 4. Each clamping mechanism 5 includes two primary slide rails 501, a clamping plate 504, and three clamping heads 509. A threaded cylinder 502 is disposed between the two primary slide rails 501, and screws 503 are threadedly connected to the inner wall of the threaded cylinder 502. Two secondary slide rails 505 are fixedly mounted on one end of the clamping plate 504. Movable frames 506 are slidably connected to the inner wall of the secondary slide rails 505. Two primary connecting rod components 507 are rotatably connected to both ends of the clamping plate 504. Secondary connecting rod components 508 are rotatably connected to the inner walls of the two movable frames 506. Limit strips 5010 are provided at one end of each of the three clamping heads 509. One end of the clamping head 509 is rotatably connected to one end of the two first connecting rod components 507, and one end of the other clamping head 509 is rotatably connected to one end of the second connecting rod component 508. The other end of the clamping plate 504 is fixedly connected to two second sliders 5011. One end of the two second sliders 5011 is slidably connected to the inner wall of the two first slide rails 501 respectively. The two ends of the outer surface of the threaded cylinder 502 are fixedly connected to the other ends of the two first slide rails 501 respectively. One end of the two first connecting rod components 507 is rotatably connected to the inner wall of the two movable frames 506 respectively. The bottom end of the mounting frame 2 is fixedly installed to the top end of the working base 1. The driving device 3 is set at the top end of the mounting frame 2. The telescopic end of the driving device 3 passes through the top end of the mounting frame 2 and is fixedly installed to the top end of the lifting platform 6. The bottom end of the lifting platform 6 is provided with a hot melt component 7.

[0029] In this embodiment, when clamping the workpiece, the operator first places the workpiece to be processed between the two clamping mechanisms 5. Then, the operator can use a screwdriver or other tools to turn the screw 503. After the screw 503 rotates, it will squeeze and push the clamping plate 504. The clamping plate 504 will slide after being subjected to force, and the second slider 5011 will slide on the inner wall of the first slide rail 501. The clamping plate 504 continuously moves closer to the surface of the workpiece until the clamping head 509 contacts the surface of the workpiece. When the clamping head 509 contacts the surface of the workpiece, the clamping head 509 will be subjected to a reaction force from the surface of the workpiece. At this time, the clamping head 509... 09 will push the first linkage component 507 and the second linkage component 508. After being pushed, the two linkage components 507 and 508 will cause their two links to rotate around their connection point as an axis. One end of the first linkage component 507 will rotate around its connection point with the clamping plate 504 as an axis, while the other end will generate a thrust on the movable frame 506, causing the movable frame 506 to slide inside the second slide rail 505. Similarly, the second linkage component 508 will simultaneously generate a thrust on both movable frames 506. When the two first linkage components 507 and the second linkage component 508 reach equilibrium, the three clamps... When the gripper head 509 is not in a straight line, it will begin to rotate. The contact surface between the gripper head 509 and the workpiece is arc-shaped, which maximizes the fit to the irregular curved surface of the workpiece. At this time, the limiting strip 5010 will limit the gripper head 509. One side of the limiting strip 5010 is located at the bend of the connection between the two connecting rods in the first connecting rod component 507 and the second connecting rod component 508. If the operator turns the screw 503 too quickly, causing the gripper head 509 to experience excessive reaction force from the workpiece, the limiting strip 5010 will prevent the gripper head 509 from rotating too much. It will also prevent the gripper head 509 from rotating too much. After stabilization, the workpiece is fixed in place. At this point, the three clamping heads 509 will fit against the irregular surface of the workpiece with curvature. Then, the operator can stop rotating the screw 503 to complete the clamping of the workpiece. It should be noted that the operator needs to align the clamping head 509 installed on the second connecting rod component 508 with the protruding part of the workpiece surface, and align the clamping head 509 installed on the first connecting rod components 507 on both sides with the recessed parts on both sides of the protruding part. This embodiment can enable the clamping mechanism 5 to firmly clamp the surface of the irregular workpiece with curvature, avoid the phenomenon of workpiece displacement during processing, and improve the yield of the device. Example 2

[0030] Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, each of the two slide rails 501 has a limiting mechanism 8 at one end. The limiting mechanism 8 includes a fixed plate 801 and a rotating plate 804. The top of the fixed plate 801 has a second mounting hole 802, and a spring 803 is installed inside the second mounting hole 802. One end of the rotating plate 804 is slidably connected to the inner wall of the second mounting hole 802, and the other end of the rotating plate 804 is fixedly connected to a limiting post 805. The top of the mounting platform 4 has multiple limiting holes 401, and the size of the limiting post 805 is the same as the size of the limiting hole 401. The mounting platform 4 has two sliding grooves 402 at its top and near both ends. The inner wall of the sliding groove 402 is slidably connected to a first slider 403. The tops of the four first sliders 403 are fixedly installed to the bottoms of the four first slide rails 501 respectively. Two clamping mechanisms 5 are symmetrically arranged at the top of the mounting platform 4. Multiple limiting holes 401 are symmetrically distributed at the top of the mounting platform 4. The bottom of the spring 803 is fixedly connected to the inner wall of the second mounting hole 802. The top of the spring 803 is fixedly connected to one end of the rotating plate 804.

[0031] In this embodiment, when clamping workpieces of different sizes, the operator first holds the two No. 1 slide rails 501 with their hand and then pushes them. At this time, the No. 1 slider 403 will slide inside the slide groove 402. When the operator judges that the distance between the two clamping mechanisms 5 is suitable for the size of the workpiece, they can press the bottom of the rotating plate 804 with their hand and then lift the rotating plate 804 upwards. The limiting post 805 at the other end of the rotating plate 804 is then inserted into the limiting hole 401 at the appropriate position. When the clamping mechanism 5 clamps the workpiece, it will be subjected to the reaction force from the workpiece. At this time, the clamping mechanism 5 will move slightly, and the spring 803 will twist and produce elastic deformation. After the spring 803 produces elastic deformation, it will generate elastic force. At this time, the elastic force will cancel out the reaction force received by the clamping mechanism 5, thus maintaining the stability of the clamping mechanism 5 and making it convenient for the operator to adjust the clamping mechanism 5. Example 3

[0032] according to Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, a lifting platform 6 is provided at the bottom of the mounting frame 2. Four mounting holes 601 are provided at the bottom of the lifting platform 6 and near the four corners. A buffer spring 10 is provided inside the mounting hole 601. A telescopic column 9 is fixedly installed on the top of the inner wall of the mounting hole 601. The outer surface of the telescopic column 9 is movably connected to the inner wall of the buffer spring 10. A pressing column 11 is fixedly installed at the bottom of the telescopic column 9. The top of the buffer spring 10 is fixedly connected to the top of the inner wall of the mounting hole 601, and the bottom of the buffer spring 10 is fixedly connected to the top of the pressing column 11.

[0033] In this embodiment, the drive device 3 drives the lifting platform 6 to descend, causing the hot-melt component 7 to contact the workpiece surface. During this process, when the four extrusion columns 11 contact the top of the working base 1, they will compress the telescopic column 9 and buffer spring 10 inside. At this time, the telescopic column 9 will contract, and the buffer spring 10 will be compressed and undergo elastic deformation. The buffer spring 10 will generate elastic force and slow down the descent speed of the lifting platform 6, while reducing the extrusion force of the hot-melt component 7 on the workpiece. This makes it easier for the operator to observe the status of the lifting platform 6. If the lifting platform 6 descends too low, causing the extrusion force of the hot-melt component 7 on the workpiece to be too large, the operator can control the working status of the drive device 3 in time, thus improving the safety of the device.

[0034] The usage and working principle of this device are as follows: When clamping a workpiece, the operator first places the workpiece to be processed between the two clamping mechanisms 5. Then, the operator can use a screwdriver or other tools to turn the screw 503. After the screw 503 turns, it will squeeze and push the clamping plate 504. The clamping plate 504 will slide under the force, and the second slider 5011 will slide on the inner wall of the first slide rail 501. The clamping plate 504 will continuously move closer to the surface of the workpiece until the clamping head 509 contacts the surface of the workpiece. When the clamping head 509 contacts the surface of the workpiece, the clamping head 509... The clamping head 509 will be subjected to a reaction force from the workpiece surface. At this time, the clamping head 509 will push the first connecting rod component 507 and the second connecting rod component 508. After being pushed, the first connecting rod component 507 and the second connecting rod component 508 will cause the two connecting rods contained therein to rotate around the connection point between them. One end of the first connecting rod component 507 will rotate around the connection point between it and the clamping plate 504, while the other end will generate a thrust on the movable frame 506, causing the movable frame 506 to slide inside the second slide rail 505. Similarly, the second connecting rod component 508 will simultaneously generate a thrust on both movable frames 506. When the two first-link components 507 and the second-link component 508 reach equilibrium, the three clamping heads 509 will no longer be in a straight line. At this time, the clamping heads 509 will begin to rotate. The contact surface between the clamping heads 509 and the workpiece is arc-shaped, which can maximize the fit with the irregular curved surface of the workpiece. At this time, the limiting strip 5010 will limit the clamping heads 509. One side of the limiting strip 5010 is set at the bending point of the connection between the two links in the first-link component 507 and the second-link component 508. If the operator turns the screw 503 too quickly, the clamping heads 509 will be unable to rotate. When the reaction force from the workpiece is too large, the limit strip 5010 will prevent the rotation angle of the clamping head 509 from being too large. At the same time, it can also fix the clamping head 509 after it is stable. At this time, the three clamping heads 509 will be in contact with the irregular surface of the workpiece with curvature. Then, the operator can stop rotating the screw 503 to complete the clamping of the workpiece. It should be noted that the operator needs to align the clamping head 509 installed on the second connecting rod component 508 with the protruding part of the workpiece surface, and align the clamping head 509 installed on the first connecting rod components 507 on both sides with the recessed parts on both sides of the protruding part.When clamping workpieces of different sizes, the operator first holds down the two No. 1 slide rails 501 with their hand and then pushes them. At this time, the No. 1 slider 403 will slide inside the slide groove 402. When the operator judges that the distance between the two clamping mechanisms 5 is suitable for the size of the workpiece, they can press the bottom of the rotating plate 804 with their hand and then lift the rotating plate 804 upwards. The limiting post 805 at the other end of the rotating plate 804 is then inserted into the limiting hole 401 at the appropriate position. When the clamping mechanism 5 clamps the workpiece, it will be subjected to the reaction force from the workpiece. At this time, the clamping mechanism 5 will move slightly, and the spring 803 will twist and produce elastic deformation. After the spring 803 produces elastic deformation, it will generate elastic force. At this time, the elastic force will react with the reaction force of the workpiece. The forces cancel each other out, thus maintaining the stability of the clamping mechanism 5. The drive device 3 lowers the lifting platform 6, bringing the hot-melt component 7 into contact with the workpiece surface. During this process, when the four extrusion columns 11 contact the top of the working base 1, they compress the internal telescopic columns 9 and buffer springs 10. At this time, the telescopic columns 9 contract, and the buffer springs 10 are compressed and undergo elastic deformation. The buffer springs 10 generate elastic force and slow down the descent speed of the lifting platform 6, while reducing the extrusion force of the hot-melt component 7 on the workpiece. This allows the operator to easily observe the status of the lifting platform 6. If the lifting platform 6 descends too low, causing excessive extrusion force of the hot-melt component 7 on the workpiece, the operator can promptly control the operation of the drive device 3, improving the safety of the device.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A raw material hot-melting device for plastic processing, comprising a working base (1), a mounting frame (2), and a driving device (3), characterized in that: A mounting platform (4) is fixedly installed on the top of the working base (1). Two clamping mechanisms (5) are provided on the top of the mounting platform (4). The clamping mechanism (5) includes two first slide rails (501), a clamping plate (504), and three clamping heads (509). A threaded cylinder (502) is provided between the two first slide rails (501). The inner wall of the threaded cylinder (502) is threaded with screws (503). Two second slide rails (505) are fixedly installed on one end of the clamping plate (504). A movable frame (506) is slidably connected to the inner wall of the second slide rail (505). Two clamping heads (506) are rotatably connected to both ends of the clamping plate (504). A first connecting rod component (507) is rotatably connected to the inner walls of two movable frames (506), and a limit strip (5010) is provided at one end of each of the three clamping heads (509). One end of two of the clamping heads (509) is rotatably connected to one end of the two first connecting rod components (507), and one end of the other clamping head (509) is rotatably connected to one end of the second connecting rod component (508). Two second sliders (5011) are fixedly connected to the other end of the clamping plate (504), and one end of each of the two second sliders (5011) is slidably connected to the inner walls of the two first slide rails (501). Each of the two slide rails (501) is provided with a limiting mechanism (8) at one end. The limiting mechanism (8) includes a fixed plate (801) and a rotating plate (804). The top of the fixed plate (801) is provided with a second mounting hole (802). A spring (803) is provided inside the second mounting hole (802). One end of the rotating plate (804) is slidably connected to the inner wall of the second mounting hole (802). The other end of the rotating plate (804) is fixedly connected to a limiting post (805). The top of the mounting platform (4) is provided with multiple limiting holes (401). The size of the limiting post (805) is adapted to the size of the limiting hole (401).

2. The raw material hot-melting device for plastic processing according to claim 1, characterized in that: The bottom end of the mounting frame (2) is provided with a lifting platform (6). The bottom end of the lifting platform (6) and near the four corners are provided with four No. 1 mounting holes (601). The interior of the No. 1 mounting hole (601) is provided with a buffer spring (10). The top of the inner wall of the No. 1 mounting hole (601) is fixedly installed with a telescopic column (9). The outer surface of the telescopic column (9) is movably connected with the inner wall of the buffer spring (10). The bottom end of the telescopic column (9) is fixedly installed with a compression column (11).

3. The raw material hot-melting device for plastic processing according to claim 1, characterized in that: The outer surfaces of the threaded cylinder (502) are fixedly connected to the other ends of the two first slide rails (501) at both ends, and one end of the two first connecting rod components (507) is rotatably connected to the inner walls of the two movable frames (506).

4. The raw material hot-melting device for plastic processing according to claim 1, characterized in that: Two sliding grooves (402) are provided at the top of the mounting platform (4) and near the two ends. A first slider (403) is slidably connected to the inner wall of the sliding groove (402). The tops of the four first sliders (403) are fixedly installed to the bottoms of the four first slide rails (501).

5. The raw material hot-melting device for plastic processing according to claim 1, characterized in that: The two clamping mechanisms (5) are symmetrically arranged at the top of the mounting platform (4), and the multiple limiting holes (401) are symmetrically distributed at the top of the mounting platform (4).

6. The raw material hot-melting device for plastic processing according to claim 1, characterized in that: The bottom end of the spring (803) is fixedly connected to the inner wall of the second mounting hole (802), and the top end of the spring (803) is fixedly connected to one end of the rotating plate (804).

7. The raw material hot-melting device for plastic processing according to claim 2, characterized in that: The top end of the buffer spring (10) is fixedly connected to the top end of the inner wall of the first mounting hole (601), and the bottom end of the buffer spring (10) is fixedly connected to the top end of the extrusion column (11).

8. The raw material hot-melting device for plastic processing according to claim 1, characterized in that: The bottom end of the mounting frame (2) is fixedly installed to the top end of the working base (1), and the driving device (3) is set at the top end of the mounting frame (2).

9. A raw material hot-melting device for plastic processing according to claim 2, characterized in that: The telescopic end of the drive device (3) passes through the top of the mounting frame (2) and is fixedly installed at the top of the lifting platform (6). The bottom of the lifting platform (6) is provided with a hot melt component (7).

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