Screw extrusion material adding equipment with anti-blocking function

Abstract

The invention provides screw extrusion additive manufacturing equipment with an anti-blocking function, and relates to the technical field of additive manufacturing, the screw extrusion additive manufacturing equipment comprises an additive extrusion mechanism, a driving mechanism in the additive extrusion mechanism is connected with and drives a screw, the left end of the additive extrusion mechanism is fixedly connected with an extrusion charging barrel, and the exterior of the extrusion charging barrel is fixedly connected with a heater; through insertion of the dredging insertion plate, the friction force between the thermoplastic material in the extrusion charging barrel and the inner wall of the extrusion charging barrel is increased, slipping rotation is stopped, the thermoplastic material is recovered to a flowing state under extrusion of the screw, the thermoplastic material in the extrusion charging barrel is dredged, and the situation that the operation efficiency of additive manufacturing equipment is affected due to long-time blockage of the extrusion charging barrel is avoided; the problems that in the operation process of a traditional screw extrusion mechanism for bamboo charcoal polyester fiber manufacturing, when friction force between the inner wall of a conveying channel and bamboo charcoal polyester fibers is insufficient, molten bamboo charcoal polyester fibers may slip in the screw propelling process, flowing is blocked, the molten bamboo charcoal polyester fibers are prone to being accumulated in the channel, and then blockage is caused are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and particularly to a screw extrusion additive manufacturing device with an anti-blocking function. Background Art

[0002] The screw extrusion mechanism is a core component of additive manufacturing technologies such as 3D printing. Its function is to convert solid materials such as thermoplastic plastics and bamboo charcoal polyester fiber materials into a molten or semi-fluid state that can be stacked layer by layer through mechanical action. It usually consists of a screw, a heating element, a nozzle, and a drive system. The screw rotates in the heating chamber, and its spiral structure closely cooperates with the inner wall of the chamber to form an effective material conveying channel. Under the action of the drive system, the screw rotates to push the material towards the nozzle direction. At the same time, the heating element provides heat to melt the material, and finally, it is precisely extruded through the nozzle to form a predetermined three-dimensional structure.

[0003] During the operation of the traditional screw extrusion mechanism for bamboo charcoal polyester fiber manufacturing, when the frictional force between the inner wall of the conveying channel and the bamboo charcoal polyester fiber is insufficient, the molten bamboo charcoal polyester fiber may slip during the screw propulsion process, resulting in blocked flow. The material cannot be effectively conveyed to the nozzle and is prone to accumulate in the channel, thereby causing blockage. Summary of the Invention

[0004] The present invention discloses a screw extrusion additive manufacturing device with an anti-blocking function to solve the problem that during the operation of the traditional screw extrusion mechanism for bamboo charcoal polyester fiber manufacturing, when the frictional force between the inner wall of the conveying channel and the bamboo charcoal polyester fiber is insufficient, the molten bamboo charcoal polyester fiber may slip during the screw propulsion process, resulting in blocked flow. The material cannot be effectively conveyed to the nozzle and is prone to accumulate in the channel, thereby causing blockage.

[0005] In a first aspect of the present disclosure, there is provided a screw extrusion additive manufacturing device with an anti-blocking function, specifically including: an additive extrusion mechanism, an internal drive mechanism of the additive extrusion mechanism is connected to and drives a screw. The left end of the additive extrusion mechanism is fixedly connected to an extrusion barrel, an external heater is fixedly connected to the extrusion barrel, two electromagnetic push cylinders are fixedly connected to the upper surface of the bottom plate of the additive extrusion mechanism, the upper end of the electromagnetic push cylinder is fixedly connected to a lifting and translation frame. A docking bottom port is opened below the extrusion barrel. The left end of the docking bottom port extends to the left side of the cavity of the extrusion barrel to form a left end socket, and the right end of the docking bottom port extends to the right side of the cavity of the extrusion barrel to form a right end socket. A sliding bottom plate of the barrel is slidably connected inside the docking bottom port. A lifting push seat is provided below the sliding bottom plate of the barrel. An insertion plate guiding port is penetrated through the sliding bottom plate of the barrel. A dredging insertion plate is fixedly connected above the lifting push seat, and the dredging insertion plate is slidably inserted into the insertion plate guiding port. The lower end of the lifting push seat is movably connected to the lifting and translation frame, and the lifting and translation frame is installed at the upper end of the push rod of the electromagnetic push cylinder.

[0006] Furthermore, bottom plate slide grooves are opened on the inner walls of the docking bottom opening, the left end socket and the right end socket, and the front edge and the rear edge of the barrel sliding bottom plate are respectively fixedly connected with bottom plate slide strips, and the bottom plate slide strips are slidably connected to the bottom plate slide grooves.

[0007] Furthermore, two pull shaft guide rods are installed on the left side of the lower surface of the extrusion barrel, and the two pull shaft guide rods are slidably connected to the pull shaft sliders respectively, and a lifting pull shaft is fixedly connected between the two pull shaft sliders.

[0008] Furthermore, the upper end of the pull shaft slider is fixedly connected with a slider tension spring, and the upper end of the slider tension spring is fixedly connected to the inner convex plate of the pull shaft guide rod.

[0009] Furthermore, a striking gear cylinder is installed on the lifting shaft through a ratchet and pawl mechanism, the pawl in the ratchet and pawl mechanism faces the clockwise direction when viewed from the front, and wedge-shaped teeth are provided on the outer cylinder surface of the striking gear cylinder, and the tip of the wedge-shaped teeth faces the counterclockwise direction when viewed from the front.

[0010] Furthermore, a wedge-shaped latching tooth is provided at the left end of the lower surface of the lifting push seat, and the tip of the wedge-shaped latching tooth faces to the lower right.

[0011] Furthermore, the upper surface of the barrel sliding bottom plate is an arc-shaped concave surface, and the arc surface above the barrel sliding bottom plate is consistent with the curvature of the inner surface of the extrusion barrel.

[0012] Furthermore, rectangular grooves are respectively provided on the front surface and the rear surface of the lifting and translating frame, and the lifting and translating frame is parallel to the axis of the extrusion barrel.

[0013] Furthermore, the front edge and the rear edge of the lifting push seat are fixedly connected with a translation connecting rod, and the translation connecting rod is rotatably connected with two mutually parallel translation rollers, and the two translation rollers are respectively rollingly connected to the upper surface and the lower surface of the lifting and translation frame trough body.

[0014] Furthermore, a tension spring connecting plate is fixedly connected to the lower surface of the barrel sliding bottom plate, a bottom plate reset tension spring is fixedly connected to the right surface of the tension spring connecting plate, and the right end of the bottom plate reset tension spring is fixedly connected to the right end of the lower surface of the extrusion barrel.

[0015] The present invention provides a screw extrusion additive device with an anti-blocking function, which has the following beneficial effects: The present invention adopts an electromagnetic push cylinder to drive the lifting and translation frame, combined with the structure of the dredging plug plate and the barrel sliding bottom plate, which can respond quickly when a blockage signal is detected, control the dredging plug plate to pass through the plug plate guide port and insert into the extrusion barrel, and extrude the thermoplastic material in the extrusion barrel through mechanical force, so that it is deformed and damaged and the original shape is dispersed, thereby solving the blockage problem caused by the agglomeration and accumulation of bamboo charcoal polyester fibers. When the dredging plug plate is inserted into the extrusion barrel, the screw inside the extrusion barrel continues to rotate, and the thermoplastic material follows the rotation and rotates by slipping with the inside of the extrusion barrel. At this time, through the insertion of the dredging plug plate, the friction between the bamboo charcoal polyester fiber inside the extrusion barrel and its inner wall is increased and the slipping rotation is stopped, and the fiber is restored to a flowing state under the extrusion of the screw, thereby dredging the thermoplastic material inside the extrusion barrel, thereby avoiding long-term blockage of the extrusion barrel and affecting the operation efficiency of the additive manufacturing equipment.

[0016] In addition, when the dredging plug plate is inserted between the two threads of the screw, as the screw rotates, the threads fit with the dredging plug plate, and the dredging plug plate is pushed to the left, so that the barrel sliding bottom plate and the lifting push seat are synchronously moved to the left by a certain distance, and at the same time, the thermoplastic material inside the extrusion barrel is pushed for a short distance. When the left end of the barrel sliding bottom plate is inserted into the left end socket, the electromagnetic push cylinder contracts, and the lifting and sliding frame and the lifting and pushing seat are pulled downward, so that the dredging plug plate is contracted downward until the end is flush with the arc surface on the barrel sliding bottom plate. At this time, the barrel sliding bottom plate is pulled to the right and reset under the tension of the bottom plate reset spring, and the dredging process can be repeated continuously for multiple times, further improving the dredging effect of the material inside the extrusion barrel.

[0017] In addition, while the thermoplastic material is decomposed and assisted in pushing through the cooperation of the barrel sliding bottom plate and the lifting push seat, it also has the function of vibrating the extrusion barrel. The lifting push seat moves to the left, causing the teeth of the striking gear cylinder and the wedge-shaped teeth to slide, and the striking gear cylinder is repeatedly pushed down under the action of the tooth structure, and the striking gear cylinder is pulled up many times in cooperation with the slider tension spring, causing the striking gear cylinder to collide frequently with the lifting push seat, prompting the lifting push seat and the dredging plug plate to vibrate, and the vibration of the dredging plug plate causes the material in the agglomerate state inside the extrusion barrel to be decomposed and damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 A schematic diagram showing the overall structure of the present application; Figure 2A schematic diagram showing the structure of the interior of the extrusion barrel of the present application is shown; Figure 3 Shows this application Figure 2 A schematic diagram of the structure at the bottom of the; Figure 4 It shows a schematic diagram of the structure of the present application in a decomposed state; Figure 5 It shows a schematic structural diagram of the bottom of the lifting push seat of the present application; Figure 6 It shows a schematic diagram of the structure of the barrel sliding bottom plate and the lifting push seat in the reset state of the present application; Figure 7 It shows a schematic structural diagram of the knocking gear cylinder of the present application in a wedge-shaped engaging tooth state; Figure 8 It shows a schematic diagram of the structure of the knocking gear cylinder of the present application; Figure 9 It shows a schematic diagram of the structure of the docking bottom of the present application; Figure 10 This application shows Figure 3 Schematic diagram of the partially enlarged structure at point A in the middle.

[0021] Reference numerals list 1. Additive extrusion mechanism; 2. Extrusion barrel; 201. Docking bottom; 202. Bottom plate slide; 203. Left end socket; 204. Right end socket; 205. Pull shaft guide rod; 3. Heater; 4. Electromagnetic push cylinder; 5. Barrel sliding bottom plate; 501. Insert plate guide; 502. Bottom plate slide; 503. Tension spring connecting plate; 504. Bottom plate reset tension spring; 6. Lifting push seat; 601. Clearing insert plate; 602. Translation connecting rod; 603. Translation roller; 604. Wedge-shaped clamping gear; 7. Lifting pull shaft; 701. Pull shaft slider; 702. Slider tension spring; 8. Knocking gear barrel; 9. Lifting and translation frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1 to 10 : The present invention proposes a screw extrusion additive device with an anti-blocking function, comprising: an additive extrusion mechanism 1, an internal driving mechanism of the additive extrusion mechanism 1 connected to and driving the screw, an extrusion barrel 2 fixedly connected to the left end of the additive extrusion mechanism 1, a heater 3 fixedly connected to the outside of the extrusion barrel 2, two electromagnetic push cylinders 4 fixedly connected to the upper surface of the bottom plate of the additive extrusion mechanism 1, a lifting and translation frame 9 fixedly connected to the upper end of the electromagnetic push cylinder 4, a docking bottom opening 201 is opened below the extrusion barrel 2, the left end of the docking bottom opening 201 is extended to the left side of the cavity of the extrusion barrel 2 to form a left end socket 203, and the right end of the docking bottom opening 201 is extended to the right side of the cavity of the extrusion barrel 2 A right-end socket 204 is formed on the side, and a barrel sliding bottom plate 5 is slidably connected inside the docking bottom port 201. A lifting push seat 6 is provided below the barrel sliding bottom plate 5. A plug guide 501 is provided through the barrel sliding bottom plate 5. A dredging plug plate 601 is fixedly connected above the lifting push seat 6. The dredging plug plate 601 is slidably plugged into the plug guide 501. A lifting and translation frame 9 is movably connected below the lifting and translation seat 6. The lifting and translation frame 9 is installed on the upper end of the push rod of the electromagnetic push cylinder 4. A hopper is connected above the extrusion barrel 2. The thermoplastic material enters the extrusion barrel 2 through the hopper. The screw is driven to rotate by the driving mechanism of the additive extrusion mechanism 1, and the thermoplastic material is pushed to the left by the screw. As the heater 3 heats the extrusion barrel 2 and the screw extrude the thermoplastic material, the thermoplastic material is mechanically converted into a molten or semi-fluid state that can be stacked layer by layer and transported to the left inside the extrusion barrel 2. When the friction between the inner wall of the conveying channel and the thermoplastic material is insufficient, the molten material may slip during the advancement of the screw, resulting in flow obstruction. The material cannot be effectively transported to the nozzle and is easily accumulated in the channel, which in turn causes blockage. At this time, the electromagnetic push cylinder 4 is controlled to move, pushing the lifting and translation frame 9 and the lifting and pushing seat 6 to move upward. Combined with the structure of the dredging plug plate 601 and the barrel sliding bottom plate 5, the dredging plug plate 601 is controlled to pass through the plug plate guide port 501. It is inserted into the extrusion barrel 2, and the thermoplastic material in the extrusion barrel 2 is squeezed by mechanical force, causing it to deform and damage its original shape and disperse, thereby solving the problem of blockage caused by the accumulation of thermoplastic materials. When the dredging plug 601 is inserted into the extrusion barrel 2, the screw inside the extrusion barrel 2 continues to rotate, and the thermoplastic material follows the rotation and rotates by slipping with the inside of the extrusion barrel 2. At this time, the insertion of the dredging plug 601 increases the friction between the thermoplastic material inside the extrusion barrel 2 and its inner wall, stops the slipping rotation, and returns to a flowing state under the extrusion of the screw, thereby dredging the thermoplastic material inside the extrusion barrel 2.

[0024] In the embodiments of the present disclosure, the upper surface of the barrel sliding bottom plate 5 is an arc-shaped concave surface. The arc surface above the barrel sliding bottom plate 5 is consistent with the inner surface radian of the extrusion barrel 2. A spring connecting plate 503 is fixedly connected to the lower surface of the barrel sliding bottom plate 5. A bottom plate return spring 504 is fixedly connected to the right surface of the spring connecting plate 503. The right end of the bottom plate return spring 504 is fixedly connected to the right end of the lower surface of the extrusion barrel 2. When the dredging plug 601 is inserted between two threads of the screw, with the rotation of the screw, the thread fits with the dredging plug 601 and pushes the dredging plug 601 to the left, causing the barrel sliding bottom plate 5 and the lifting push seat 6 to move leftward a certain distance synchronously. At the same time, it performs a short-distance auxiliary push on the thermoplastic material inside the extrusion barrel 2, assisting the thermoplastic material to be pushed to the left. When the left end of the barrel sliding bottom plate 5 is inserted into the left end socket 203, the electromagnetic push cylinder 4 contracts, pulling the lifting and translation frame 9 and the lifting push seat 6 downward, causing the dredging plug 601 to shrink downward until the end is flush with the upper arc surface of the barrel sliding bottom plate 5. At this time, under the pulling force of the bottom plate return spring 504, the barrel sliding bottom plate 5 is pulled to the right for automatic reset, facilitating the continuous operation of the dredging mechanism.

[0025] In the embodiments of the present disclosure, bottom plate chutes 202 are provided on the inner walls of the docking bottom port 201, the left end socket 203, and the right end socket 204. The front edge and the rear edge of the barrel sliding bottom plate 5 are respectively fixedly connected with bottom plate slide bars 502. The bottom plate slide bars 502 are slidably connected to the bottom plate chutes 202, which play a guiding role and can also increase the sealing performance of the edge of the barrel sliding bottom plate 5. The bottom opening of the extrusion barrel 2 is covered by the barrel sliding bottom plate 5 to seal the extrusion barrel 2. The settings of the left end socket 203 and the right end socket 204 can increase the lateral reciprocating movement stroke range of the barrel sliding bottom plate 5.

[0026] In the embodiments of the present disclosure, two pull shaft guide rods 205 are installed on the left side of the lower surface of the extrusion barrel 2. The two pull shaft guide rods 205 are respectively slidably connected with pull shaft sliders 701. A lifting pull shaft 7 is fixedly connected between the two pull shaft sliders 701. The upper end of the pull shaft slider 701 is fixedly connected with a slider spring 702. The upper end of the slider spring 702 is fixedly connected with the inner convex plate of the pull shaft guide rod 205. A knocking tooth cylinder 8 is installed on the lifting pull shaft 7 through a ratchet and pawl mechanism. The pawl in the ratchet and pawl mechanism faces the clockwise direction in the front view. Wedge teeth are provided on the outer cylinder surface of the knocking tooth cylinder 8, and the tips of the wedge teeth face the counterclockwise direction in the front view. Under normal conditions, the lifting pull shaft 7 and the knocking tooth cylinder 8 are pulled upward by the pulling force of the slider spring 702, causing the knocking tooth cylinder 8 to be in close contact with the lifting push seat 6.

[0027] Embodiment 2. On the basis of Embodiment 1, a wedge-shaped engaging tooth 604 is provided at the left end of the lower surface of the lifting and pushing seat 6, and the tip of the wedge-shaped engaging tooth 604 faces right downward; rectangular grooves are respectively formed on the front surface and the rear surface of the lifting and translating frame 9, and the lifting and translating frame 9 is parallel to the axis of the extrusion barrel 2; both the front edge and the rear edge of the lifting and pushing seat 6 are fixedly connected with translation connecting rods 602, and the translation connecting rods 602 are rotatably connected with two mutually parallel translation rollers 603, and the two translation rollers 603 are respectively in rolling connection with the upper surface and the lower surface of the groove body of the lifting and translating frame 9; under normal state, the knocking tooth cylinder 8 is attached to the lifting and pushing seat 6 under the pulling force of the slider spring 702, so that the tooth-shaped structure on the outer surface of the knocking tooth cylinder 8 is attached to the wedge-shaped engaging tooth 604. When the lifting and pushing seat 6 and the barrel sliding bottom plate 5 move leftward under the push of the screw, the knocking tooth cylinder 8 slides leftward along the wedge-shaped engaging tooth 604. At this time, the ratchet and pawl mechanism is in a locked state. During the process that the outer teeth of the knocking tooth cylinder 8 slide leftward along the wedge-shaped engaging tooth 604, it moves downward under the action of the inclined surface. When the two tooth bodies are separated, the knocking tooth cylinder 8 quickly moves upward under the pulling force of the slider spring 702 and collides with the wedge-shaped engaging tooth 604, knocking the lifting and pushing seat 6 and transmitting it to the dredging plug 601. The hot plastic raw material inside the extrusion barrel 2 is vibrated through the vibration of the dredging plug 601, so as to accelerate its decomposition and mixing. When the barrel sliding bottom plate 5 and the lifting and pushing seat 6 move rightward to reset, the knocking tooth cylinder 8 forms a rolling connection with the wedge-shaped engaging tooth 604, and the ratchet and pawl mechanism moves, releasing the locking of the lifting and pushing seat 6, which is convenient for the lifting and pushing seat 6 to quickly reset.

[0028] The working principle of this embodiment is as follows: first, the bamboo charcoal polyester fiber material enters the extrusion barrel 2 through the hopper, and the screw is driven to rotate by the driving mechanism of the additive extrusion mechanism 1, and the bamboo charcoal polyester fiber is pushed to the left by the screw, so that the bamboo charcoal polyester fiber is converted into a molten or semi-fluid state that can be stacked layer by layer and transported to the left inside the extrusion barrel 2. When the bamboo charcoal polyester fiber adheres to the extrusion barrel 2 and the friction between the inner wall of the conveying channel and the bamboo charcoal polyester fiber is insufficient, the bamboo charcoal polyester fiber slips during the screw advancement process, resulting in flow obstruction and blockage. The electromagnetic push cylinder 4 pushes the lifting and translation frame 9 and the lifting and pushing seat 6 upward, and the structure of the dredging plug plate 601 and the barrel sliding bottom plate 5 is combined to control the dredging plug plate 601 to pass through the plug plate The guide port 501 is inserted into the extrusion barrel 2, and the bamboo charcoal polyester fiber in the extrusion barrel 2 is squeezed by mechanical force, so that it is deformed and damaged and dispersed in its original shape. When the screw in the extrusion barrel 2 continues to rotate, the bamboo charcoal polyester fiber follows the rotation and rotates with the inside of the extrusion barrel 2 by slipping. With the insertion of the dredging plug 601, the friction between the bamboo charcoal polyester fiber in the extrusion barrel 2 and its inner wall is increased and the slipping rotation is stopped. Under the extrusion of the screw, it returns to a flowing state, so that the screw resumes pushing the bamboo charcoal polyester fiber. At this time, the dredging plug 601 is inserted between the two threads of the screw. With the rotation of the screw, the threads contact the dredging plug 601 and push it to the left, so that the barrel slides the bottom plate 5 and the lifting and pushing seat 6 It moves to the left for a certain distance synchronously, and at the same time, assists in pushing the bamboo charcoal polyester fiber inside the extrusion barrel 2 for a short distance, so as to assist the bamboo charcoal polyester fiber to be transported to the left inside the extrusion barrel 2. During this process, the knocking gear cylinder 8 fits with the lifting and pushing seat 6 under the pulling force of the slider spring 702, so that the toothed structure on the outer surface of the knocking gear cylinder 8 fits with the wedge-shaped clamping tooth 604. When the lifting and pushing seat 6 moves to the left, the knocking gear cylinder 8 slides to the left along the wedge-shaped clamping tooth 604. At this time, the ratchet pawl mechanism is in a locked state. During the process of the outer teeth of the knocking gear cylinder 8 sliding to the left along the wedge-shaped clamping tooth 604, they move downward under the action of the inclined surface. When the two tooth bodies are separated, the knocking gear cylinder 8 quickly moves up and collides with the wedge-shaped clamping tooth 604 under the pulling force of the slider spring 702. The lifting push seat 6 is knocked and transmitted to the unblocking plug plate 601. The bamboo charcoal polyester fiber material inside the extrusion barrel 2 is vibrated by the vibration of the unblocking plug plate 601, which accelerates its decomposition and mixing. When the barrel sliding bottom plate 5 moves to the left end limit position, the lifting push seat 6 is pulled downward by the electromagnetic push cylinder 4, so that the unblocking plug plate 601 shrinks downward, and the barrel sliding bottom plate 5 moves to the right and resets under the tension of the bottom plate reset spring 504, knocking the gear cylinder 8 and the wedge-shaped clamping tooth 604 to form a rolling connection, and the ratchet pawl mechanism is active to release the lock of the lifting push seat 6, so that the lifting push seat 6 is quickly reset. At this point, the barrel sliding bottom plate 5 and the lifting push seat 6 are reset, completing the single auxiliary unblocking of the extrusion barrel 2.

[0029] In this article, there are a few points to note: 1. The accompanying drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0030] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0031] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A screw extrusion additive device with anti-blocking function, comprising: An additive extrusion mechanism (1), wherein an internal drive mechanism of the additive extrusion mechanism (1) is connected to and drives a screw, an extrusion barrel (2) is fixedly connected to the left end of the additive extrusion mechanism (1), and a heater (3) is fixedly connected to the outside of the extrusion barrel (2), characterized in that two electromagnetic push cylinders (4) are fixedly connected to the upper surface of the bottom plate of the additive extrusion mechanism (1), and the upper end of the electromagnetic push cylinder (4) is fixedly connected to a lifting and translation frame (9), and a docking bottom opening (201) is opened at the bottom of the extrusion barrel (2), and the left end of the docking bottom opening (201) is extended to the left side of the cavity of the extrusion barrel (2) to form a left end socket (203), The right end of the bottom connection (201) is extended to the right side of the cavity of the extrusion barrel (2) to form a right end socket (204); the bottom connection (201) is slidably connected to a barrel sliding bottom plate (5); a lifting push seat (6) is provided below the barrel sliding bottom plate (5); a plug guide (501) is provided through the barrel sliding bottom plate (5); a dredging plug plate (601) is fixedly connected above the lifting push seat (6); the dredging plug plate (601) is slidably plugged into the plug guide (501); a lifting and translation frame (9) is movably connected below the lifting and translation frame (6); the lifting and translation frame (9) is installed at the upper end of the push rod of the electromagnetic push cylinder (4).

2. The screw extrusion additive equipment with anti-blocking function according to claim 1, characterized in that: Bottom plate slide grooves (202) are provided on the inner walls of the docking bottom opening (201), the left end socket (203) and the right end socket (204); the front edge and the rear edge of the barrel sliding bottom plate (5) are respectively fixedly connected to bottom plate slide strips (502); and the bottom plate slide strips (502) are slidably connected to the bottom plate slide grooves (202).

3. The screw extrusion additive device with anti-blocking function according to claim 2, characterized in that: Two pull shaft guide rods (205) are installed on the left side of the lower surface of the extrusion barrel (2), and the two pull shaft guide rods (205) are respectively slidably connected to pull shaft sliders (701), and a lifting pull shaft (7) is fixedly connected between the two pull shaft sliders (701).

4. The screw extrusion additive device with anti-blocking function according to claim 3 is characterized in that: The upper end of the pull shaft slider (701) is fixedly connected to a slider tension spring (702), and the upper end of the slider tension spring (702) is fixedly connected to the inner convex plate of the pull shaft guide rod (205).

5. The screw extrusion additive device with anti-blocking function according to claim 4, characterized in that: A striking gear cylinder (8) is mounted on the lifting shaft (7) via a ratchet and pawl mechanism, the pawl in the ratchet and pawl mechanism faces in the clockwise direction when viewed from the front, and a wedge-shaped tooth is provided on the outer surface of the striking gear cylinder (8), the tip of the wedge-shaped tooth faces in the counterclockwise direction when viewed from the front.

6. The screw extrusion additive equipment with anti-blocking function according to claim 1, characterized in that: A wedge-shaped latching tooth (604) is provided at the left end of the lower surface of the lifting push seat (6), and the tip of the wedge-shaped latching tooth (604) faces downward to the right.

7. The screw extrusion additive device with anti-blocking function according to claim 1, characterized in that: The upper surface of the barrel sliding bottom plate (5) is an arc-shaped concave surface, and the arc surface above the barrel sliding bottom plate (5) is consistent with the arc of the inner surface of the extrusion barrel (2).

8. The screw extrusion additive device with anti-blocking function according to claim 1, characterized in that: The front surface and the rear surface of the lifting and translating frame (9) are respectively provided with rectangular grooves, and the lifting and translating frame (9) is parallel to the axis of the extrusion barrel (2).

9. The screw extrusion additive device with anti-blocking function according to claim 8, characterized in that: The front edge and the rear edge of the lifting and sliding seat (6) are fixedly connected to a translation link (602), and the translation link (602) is rotatably connected to two mutually parallel translation rollers (603), and the two translation rollers (603) are respectively rollingly connected to the upper surface and the lower surface of the groove body of the lifting and sliding frame (9).

10. The screw extrusion additive equipment with anti-blocking function according to claim 1, characterized in that: The lower surface of the barrel sliding bottom plate (5) is fixedly connected to a tension spring connecting plate (503), the right surface of the tension spring connecting plate (503) is fixedly connected to a bottom plate reset tension spring (504), and the right end of the bottom plate reset tension spring (504) is fixedly connected to the right end of the lower surface of the extrusion barrel (2).

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