Plastic pencil production device

Abstract

The present invention belongs to the technical field of plastic pencils, and in particular relates to a plastic pencil production device, wherein the device comprises: a frame; a pressing assembly for injection molding a plastic pencil shaft; a plasticizing feeding mechanism composed of a feeding assembly and a plasticizing assembly, wherein the feeding assembly is used for extruding and feeding the plastic pen shaft, and the plasticizing assembly is used to assist in aligning the plastic pen shaft parts; a heating assembly for thermoplasticizing the plastic pen shaft; and a pouring block for preliminarily aligning two pen shafts to be thermoplasticized. The pressing assembly is provided to complete the pressing of half of the plastic pencil shaft, and the pencil lead is wrapped by bonding the two semi-cylindrical shafts. When the thermoplasticizing of the bonded plastic pen shaft is completed, the feeding assembly is adopted to realize automatic alignment and horizontal feeding of the plastic pen shaft, and at the same time, the cylindrical pen shaft is rotated about its axis. When the plastic pen shaft is thermoplasticized at the heating assembly, the circumferential surface of the plastic pen shaft can be evenly heated, so that the plastic pen shaft is fully heated to meet the thermoplasticizing requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic pencils, and in particular relates to a plastic pencil production device. Background Art

[0002] A pencil is a type of pen used for writing and drawing, primarily with a graphite core and a wooden outer covering. It often has an eraser attached to the end for erasing. Modern pencil cores are made of graphite and clay. Traditionally, pencil barrels are made of wood. The production process involves cutting the wood into a semi-cylindrical barrel, then gluing the barrel to the core, pressing it together, and finally leaving it to rest to produce the final product. This consumes a significant amount of wood, which is inconsistent with the country's energy-saving and environmentally friendly policies, hindering the development of the wood pencil industry.

[0003] Patent publication number CN212764672U discloses an extrusion device for producing plastic pencils, comprising a fixed frame, a fixed barrel fixedly disposed within the fixed frame, a plug movably disposed at the upper end of the fixed barrel, a hydraulic rod fixedly disposed in the middle of the top of the fixed frame, a telescopic end of the hydraulic rod extending within the fixed barrel and fixedly connected to the top of the plug, a controller fixedly disposed on the right side of the top of the fixed frame, and a storage barrel fixedly disposed on the left side of the top of the fixed frame. During extrusion, the material inside the storage barrel is fed into the fixed barrel through a feed pipe. When the amount of material inside the fixed barrel reaches a certain amount, an infrared sensor is triggered, and the controller activates the electric telescopic rod to drive the block toward the inside of the through slot. The block then passes through the through slot and engages with the inside of the feed pipe, thereby blocking the inside of the feed pipe and stopping the feeding of the material.

[0004] The above-mentioned equipment also has the following problems: When manufacturing the plastic pencil barrel, the above-mentioned equipment adopts an extrusion method to form the plastic barrel. However, during the production process of the pencil, since the pencil lead is a cylindrical graphite with very regular circular runout and coaxiality, when using the extrusion molding manufacturing method, the coaxiality of the pencil lead and the barrel cannot be guaranteed. Secondly, the pencil lead and the barrel can not be effectively combined. It is not guaranteed that the pencil lead will not break when the shaped barrel and the pencil lead are embedded. There is no clear process step. In view of the above factors, the process flow adopted by the above-mentioned equipment has no practical value. Therefore, when manufacturing plastic pencils, a production method similar to that of traditional wooden pencils should be adopted, and the process step of pen barrel extrusion should be changed to the process step of molding two semi-cylindrical pen barrels to meet the coaxiality and integrity of the pencil lead during production. Summary of the Invention

[0005] The purpose of the present invention is to provide a plastic pencil production device to solve the problems raised in the above background technology. To achieve the above purpose, the following technical solution is provided: a plastic pencil production device, wherein the equipment includes:

[0006] Rack, for support;

[0007] The pressing assembly is set in the middle of the frame and is used for injection molding of plastic pencil rods;

[0008] The plastic feeding mechanism is arranged at the front end of the frame and is composed of a feeding assembly and a plastic combining assembly. The feeding assembly is used for extruding and feeding the plastic pen barrel, and the plastic combining assembly is used to assist in aligning the plastic pen barrel.

[0009] The heating component is fixedly arranged on the upper end of the plastic bonding component and is used for thermal plastic bonding of the plastic pen body;

[0010] The pouring block is fixedly arranged at the rear end of the feeding assembly and is used for preliminary centering of the two pen rods to be thermoplasticized.

[0011] In the present technical solution, when preparing a plastic pencil, the plastic material is first placed in a pressing assembly, and then the pressing assembly is heated to press and form the plastic therein; then, adhesive is applied to the fastening surfaces of the two pressed and formed plastic pen barrels, and the refills are placed therein, the two plastic pen barrels are fastened together, and the distance between the plastic components is adjusted. After that, the preliminarily formed plastic pencil is fed into the feeding assembly along the pouring block, and the feeding assembly drives the pen barrel forward and then performs thermal plastic bonding on the pen barrel through the heating assembly, finally achieving the plastic forming of the two semi-cylindrical pen barrels.

[0012] In any of the above technical solutions, the further feeding component includes:

[0013] The operating cylinder is fixedly arranged in the middle of the frame, and the upper and lower ends of the operating cylinder are provided with feeding cavities;

[0014] An I-shaped bracket is fixedly arranged at the end wall of the feeding cavity, and a swing plate is provided in the middle thereof for rotation;

[0015] The block groove is fixedly connected to the left end of the swing plate, and the lower end of the block groove can be abutted against the lower end wall of the I-shaped bracket to limit the angle of the block groove;

[0016] The rotating shaft is rotatably arranged at the lower end of the block groove, and a feed roller is rotatably arranged in the middle thereof, and the feed roller is used to contact the plastic pen barrel to be thermoplasticized and feed it;

[0017] The driven pulley is fixedly connected to the right end of the rotating shaft, and the driven pulley rotates coaxially with the feed roller;

[0018] The feeding motor is fixedly arranged at the right end wall of the block groove, and a pulley is provided at the rotating end of the feeding motor, and a belt is provided between the pulley and the driven pulley;

[0019] The tension spring is fixedly connected to the upper end wall of the I-shaped bracket and the right end of the swing plate, and is used to pull the swing plate and the block groove as a whole, driving the material roller to press the pen rod to be thermoplasticized.

[0020] In the present technical solution, when the plastic pencil is plasticized, the right end of the swing plate is always raised under the tension of the tension spring, so that the left end of the block groove is always away from the horizontal axis of the operating cylinder; therefore, the feed roller can always be close to the surface of the pen barrel when feeding the plastic pen barrel, thereby realizing horizontal feeding of the plastic pen barrel; then the feeding motor is started, and the feeding motor drives the belt to rotate and then drives the driven pulley and the feed roller to rotate simultaneously, and the plastic pen barrel is horizontally fed from the right end to the left end of the feeding assembly; at the same time, the surface of the feed roller is inclined, which causes the pen barrel to rotate around its own axis when conveying the pen barrel, so that the subsequent heating assembly can completely perform thermal plasticization on the pen barrel.

[0021] In any of the above technical solutions, the further plastic-bonding component includes:

[0022] The adjustment block is fixedly connected to the front end of the operating cylinder and has an adjustment cavity inside;

[0023] The inserting plate is fixedly connected to the right end of the adjustment cavity, and a square through slot is provided in the middle of the inserting plate. A square shaft block is slidably provided in the square through slot, and a baffle platform is provided in the middle of the square shaft block;

[0024] The tightening spring is sleeved on the square shaft block, and the two ends of the tightening spring are respectively fixedly connected to the plug plate and the square shaft block;

[0025] The right end of the screw is rotatably connected to the left end of the square shaft block, the middle part is threadedly connected to the left end wall of the adjustment block, the left end is placed on the outer end of the adjustment block, and a handle is fixed on the left end for manual adjustment of the screw.

[0026] In this technical solution, when the diameters of the plastic pencils to be thermoplasticized are different, the handle is manually rotated, and the rotation of the handle drives the screw to transmit the threaded transmission with the left end wall of the adjustment chamber. At this time, the square shaft block is driven to the right along the insert plate, driving the heating component to be close to the plastic pencil to be thermoplasticized, thereby completely achieving thermoplasticization of the plastic pencil.

[0027] In any of the above technical solutions, the further heating component includes:

[0028] Power supply, fixedly set on the upper end of the adjustment block;

[0029] The plastic-locking head is fixedly connected to the right end of the square shaft block and is provided with a resistance wire; the plastic-locking head is connected to the power supply through a wire.

[0030] In this technical solution, the heat source is transferred to the plastic candle itself by heating the plastic sealing head, thereby completing the complete plastic sealing of the plastic candle, so that the two semi-cylindrical pen barrels are completely plasticized to completely wrap the pencil lead in the middle.

[0031] In any of the above technical solutions, the further pressing assembly includes:

[0032] The hydraulic rod is fixedly connected to the upper end of the frame; the lower end of the hydraulic rod is fixedly connected to the pressure plate, and a heat conduction cavity is provided inside the pressure plate;

[0033] The heating circuit is fixedly arranged in the middle of the heat conduction cavity;

[0034] The pressing head is evenly arranged at the lower end of the pressing plate. The pressing head is connected to the heating circuit and is used for hot pressing of the pen body.

[0035] The pressing support plate is fixedly arranged at the lower end of the frame and is provided with a groove for completing the hot pressing forming of the semi-cylindrical pen barrel with the pressing head.

[0036] In this technical solution, the plastic to be pressed and formed is placed in the semicircular groove of the pressing support plate, and then the hydraulic rod is started. The hydraulic rod drives the pressing plate as a whole to approach the pressing support plate to complete the pressing. During this operation, the pressing head is in a heated state, and a semicircular protrusion is provided in the middle of it, thereby retaining the placement position of the pencil lead so that the pencil lead can be fixed when the two semi-cylindrical pencil rods are glued together.

[0037] In any of the above technical solutions, a pouring block is fixedly provided at the rear end of the operating cylinder. The pouring block is in the shape of a thin-walled cylinder with an inner cone and is used to guide the feeding of the plastic pen shaft, and the horizontal axis of the pouring block coincides with the horizontal center axis of the operating cylinder.

[0038] In this technical solution, when the two sticky semi-cylindrical pencil rods are bonded into a cylindrical shape, the next step of plastic bonding is carried out. At this time, it is necessary to ensure that the pencil stem can be smoothly inserted into the feeding assembly to facilitate the plastic bonding of the heating assembly. The pouring block is used to allow the pencil straight rod to be initially centered to facilitate the subsequent horizontal transmission in the feeding assembly.

[0039] A method for using a plastic pencil production device:

[0040] Step 1: Place the plastic material on the pressing plate, then start the heat conduction chamber, and the pressing head heats the plastic in the pressing plate to press and form it;

[0041] Step 2: Apply adhesive to the fastening surface of the two pressed plastic pen barrels, then put the pen refill in between and fasten the two plastic pen barrels together;

[0042] Step 3: Place the preliminarily formed plastic pencil along the pouring block into the feeding assembly;

[0043] Step 4: After the feeding component drives the pen holder forward, the pen holder is thermally plasticized by the heating component, and finally the two semi-cylindrical pen holders are plasticized.

[0044] The beneficial effects of the present invention are as follows: when manufacturing a plastic pencil, the pressing assembly is provided to first complete the pressing of half of the plastic pencil barrel, and the pencil lead is wrapped by gluing the two half cylindrical barrels; when the plastic barrels are plasticized, the feeding assembly is adopted to realize automatic alignment and horizontal feeding of the plastic barrel, and at the same time, the cylindrical barrel can be rotated around the axis during transportation, so that the circumferential surface of the plastic barrel can be evenly heated when plasticized at the heating assembly, so that the plastic barrel is fully heated to meet the requirements of thermal plasticization. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0046] Figure 2 It is a structural diagram of the plastic feeding mechanism of the present invention;

[0047] Figure 3 yes Figure 1 Schematic diagram of the middle BB;

[0048] Figure 4 yes Figure 3 Schematic diagram of the AA position in the middle;

[0049] Figure 5 It is a schematic structural diagram of the press-fit assembly in the present invention;

[0050] Figure 6 It is a top view of the pressing support plate of the present invention;

[0051] Figure 7 It is a parts drawing of the square shaft block in the present invention.

[0052] The reference numerals in the figure are: 100, frame; 200, pressing assembly; 201, hydraulic rod; 202, pressing plate; 203, heat conduction cavity; 204, heating circuit; 205, pressing head; 206, pressing support plate; 300, plastic feeding mechanism; 400, feeding assembly; 401, operating cylinder; 402, feeding cavity; 403, I-shaped bracket; 404, swing plate; 405, block groove; 406, rotating shaft; 4 07. Feed roller; 408. Driven pulley; 409. Feeding motor; 410. Belt; 411. Tension spring; 500. Plasticizing assembly; 501. Adjustment block; 502. Adjustment cavity; 503. Insert plate; 504. Square shaft block; 505. Tension spring; 506. Screw; 507. Handle; 600. Heating assembly; 601. Power supply; 602. Plasticizing head; 603. Wire; 700. Pour-out block. DETAILED DESCRIPTION

[0053] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0054] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0055] like Figure 1 As shown, this embodiment provides a plastic pencil production device, wherein the equipment includes:

[0056] Frame 100, for supporting;

[0057] The pressing assembly 200 is provided in the middle of the frame 100 and is used for injection molding of plastic pencil rods;

[0058] The plastic feeding mechanism 300 is provided at the front end of the frame 100 and is composed of a feeding assembly 400 and a plastic combining assembly 500. The feeding assembly 400 is used for extruding and feeding the plastic pen barrel, and the plastic combining assembly 500 is used for assisting in the alignment of the plastic pen barrel components.

[0059] The heating component 600 is fixedly mounted on the upper end of the plastic bonding component 500 and is used for thermal plastic bonding of the plastic pen barrel;

[0060] The pouring block 700 is fixedly arranged at the rear end of the feeding assembly 400 and is used for performing preliminary centering of the two pen barrels to be thermoplasticized.

[0061] In the present technical solution, when preparing a plastic pencil, the plastic material is first placed in the pressing assembly 200, and then the pressing assembly 200 is heated to press and mold the plastic therein; then, adhesive is applied to the fastening surfaces of the two pressed plastic pen barrels, and the refills are placed therein. The two plastic pen barrels are fastened together, and the distance between the plasticizing assemblies 500 is adjusted. After that, the preliminarily formed plastic pencil is passed along the pouring block 700 into the feeding assembly 400. The feeding assembly 400 drives the pen barrel forward, and then the pen barrel is thermally plasticized by the heating assembly 600, thereby finally achieving the plastic molding of the two semi-cylindrical pen barrels.

[0062] like Figure 2 and Figure 3 As shown, specifically, the feeding assembly 400 includes:

[0063] The operating cylinder 401 is fixedly arranged in the middle of the frame 100, and the upper and lower ends of the operating cylinder 401 are provided with a feeding cavity 402;

[0064] An I-shaped bracket 403 is fixedly mounted on the end wall of the feeding cavity 402, and a swing plate 404 is rotatably mounted in the middle thereof;

[0065] The block groove 405 is fixedly connected to the left end of the swing plate 404. The lower end of the block groove 405 can abut against the lower end wall of the I-shaped bracket 403 to limit the angle of the block groove 405.

[0066] The rotating shaft 406 is rotatably arranged at the lower end of the block groove 405, and the middle part of the rotating shaft 406 is provided with a feed roller 407, which is used to contact the plastic pen body to be thermoformed and feed it;

[0067] The driven pulley 408 is fixedly connected to the right end of the rotating shaft 406, and the driven pulley 408 rotates coaxially with the feed roller 407;

[0068] The feeding motor 409 is fixedly arranged at the right end wall of the block groove 405. A pulley is provided at the rotating end of the feeding motor 409, and a belt 410 is provided between the pulley and the driven pulley 408;

[0069] The tension spring 411 is fixedly connected to the upper end wall of the I-shaped bracket 403 and the right end of the swing plate 404, and is used to pull the swing plate 404 and the block groove 405 as a whole, driving the material roller 407 to press the pen shaft to be thermoplasticized.

[0070] In the present technical solution, when the plastic pencil is plasticized, the right end of the swing plate 404 is always raised under the tension of the tension spring 411, so that the left end of the block groove 405 is always away from the horizontal axis of the operating cylinder 401; therefore, the feed roller 407 can always be close to the surface of the pen barrel when feeding the plastic pen barrel, thereby realizing horizontal feeding of the plastic pen barrel; then the feeding motor 409 is started, and the feeding motor 409 drives the belt 410 to rotate and then drives the driven pulley 408 and the feed roller 407 to rotate simultaneously, and the plastic pen barrel is horizontally fed from the right end to the left end of the feeding assembly 400; at the same time, the surface of the feed roller 407 is inclined, which causes the pen barrel to rotate around its own axis when conveying the pen barrel, so that the subsequent heating assembly 600 can completely perform thermal plasticization on the pen barrel.

[0071] In a preferred embodiment of the present invention:

[0072] like Figure 4 and Figure 7 As shown, specifically, the plastic-bonding assembly 500 includes:

[0073] The adjustment block 501 is fixedly connected to the front end of the operating cylinder 401 and has an adjustment cavity 502 inside.

[0074] The inserting plate 503 is fixedly connected to the right end of the adjustment cavity 502. A square through slot is provided in the middle of the inserting plate 503. A square shaft block 504 is slidably provided in the square through slot. A baffle platform is provided in the middle of the square shaft block 504.

[0075] The tightening spring 505 is sleeved on the square shaft block 504, and the two ends of the tightening spring 505 are fixedly connected to the inserting plate 503 and the square shaft block 504 respectively;

[0076] The right end of the screw rod 506 is rotatably connected to the left end of the square shaft block 504, the middle part is threadedly connected to the left end wall of the adjustment block 501, the left end is placed on the outer end of the adjustment block 501, and a handle 507 is fixed to its left end for manual adjustment of the screw rod 506.

[0077] In this technical solution, when the diameters of the plastic pencils to be thermoformed are different, the handle 507 is manually rotated. The handle 507 rotates to drive the screw 506 to the left end wall of the adjustment chamber 502. At this time, the square shaft block 504 moves rightward along the insert plate 503, driving the heating assembly 600 to be close to the plastic pencil to be thermoformed, thereby completely achieving thermoformed plastic bonding of the plastic pencil.

[0078] like Figure 4 As shown, specifically, the heating assembly 600 includes:

[0079] Power supply 601, fixedly arranged on the upper end of adjustment block 501;

[0080] The plastic-locking head 602 is fixedly connected to the right end of the square shaft block 504 and is provided with a resistance wire; the plastic-locking head 602 is connected to the power supply 601 through the wire 603.

[0081] In this technical solution, the heat source is transferred to the plastic candle itself by heating the plastic head 602, thereby completing the complete plasticization of the plastic candle, so that the two semi-cylindrical pen barrels are completely plasticized to completely wrap the pencil lead in the middle.

[0082] In a preferred embodiment of the present invention:

[0083] like Figure 5 and Figure 6 As shown, specifically, the press-fit assembly 200 includes:

[0084] The hydraulic rod 201 is fixedly connected to the upper end of the frame 100; the lower end of the hydraulic rod 201 is fixedly connected to the pressure plate 202, and the interior of the pressure plate 202 is provided with a heat conduction cavity 203;

[0085] The heating circuit 204 is fixedly arranged in the middle of the heat conducting cavity 203;

[0086] The pressing head 205 is evenly arranged at the lower end of the pressing plate 202. The pressing head 205 is connected to the heating circuit 204 and is used for hot pressing of the pen body.

[0087] The pressing support plate 206 is fixedly arranged at the lower end of the frame 100 and is provided with a groove for completing the hot pressing forming of the semi-cylindrical pen body with the pressing head 205.

[0088] In this technical solution, the plastic to be pressed and formed is placed in the semicircular groove of the pressing support plate 206, and then the hydraulic rod 201 is started. The hydraulic rod 201 drives the pressing plate 202 as a whole to approach the pressing support plate 206 to complete the pressing. During this operation, the pressing head 205 is in a heated state, and a semicircular protrusion is provided in the middle of it, thereby reserving the placement position of the pencil lead so that the pencil lead can be fixed when the two semi-cylindrical pencil shafts are glued together.

[0089] In a preferred embodiment of the present invention:

[0090] like Figure 4 As shown, specifically, a pouring block 700 is fixedly provided at the rear end of the operating cylinder 401. The pouring block 700 is in the shape of a thin-walled cylinder with an inner cone and is used for guiding the feeding of the plastic pen barrel, and the horizontal axis of the pouring block coincides with the horizontal center axis of the operating cylinder 401.

[0091] In this technical solution, when the two semi-cylindrical pencil rods are bonded into a cylindrical shape, the next step of plastic bonding is carried out. At this time, it is necessary to ensure that the pencil rod can be smoothly inserted into the feeding assembly 400 to facilitate the plastic bonding of the heating assembly 600. The pouring block 700 allows the straight pencil rod to be initially aligned to facilitate the subsequent horizontal transmission in the feeding assembly 400.

[0092] A method for using a plastic pencil production device:

[0093] Step 1: Place the plastic material on the pressing plate 206, then start the heat conduction chamber 203, and the pressing head 205 heats the plastic in the pressing plate 206 to press and form it;

[0094] Step 2: Apply adhesive to the fastening surface of the two pressed plastic pen barrels, then put the pen refill in between and fasten the two plastic pen barrels together;

[0095] Step 3: Feed the preliminarily formed plastic pencil into the feeding assembly 400 along the pouring block 700;

[0096] Step 4: After the feeding component 400 drives the pen barrel to move forward, the pen barrel is thermally plasticized by the heating component 600, and finally the two semi-cylindrical pen barrels are plasticized.

[0097] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A plastic pencil production device, characterized in that: include: a frame (100) for supporting; A pressing assembly (200), arranged in the middle of the frame (100), for injection molding of plastic pencil rods; A plastic-bonding feeding mechanism (300) is arranged at the front end of the frame (100) and is composed of a feeding assembly (400) and a plastic-bonding assembly (500). The feeding assembly (400) is used for extruding and feeding the plastic penholder, and the plastic-bonding assembly (500) is used for assisting in the alignment of the plastic penholder parts. A heating component (600) is fixedly arranged on the upper end of the plastic bonding component (500) and is used for thermal plastic bonding of the plastic penholder; A pouring block (700) is fixedly arranged at the rear end of the feeding assembly (400) and is used for performing preliminary centering of the two pen shafts to be thermoplasticized; The feeding assembly (400) comprises: an operating cylinder (401) fixedly arranged in the middle of the frame (100), and a feeding cavity (402) is provided at the upper and lower ends of the operating cylinder (401); An I-shaped bracket (403) is fixedly arranged at the end wall of the feeding cavity (402), and a swing plate (404) is rotatably provided at the center thereof; A block groove (405) is fixedly connected to the left end of the swing plate (404), and the lower end of the block groove (405) can abut against the lower end wall of the I-shaped bracket (403) to limit the angle of the block groove (405); A rotating shaft (406) is rotatably arranged at the lower end of the block groove (405), wherein a feed roller (407) is rotatably provided at the middle thereof, and the feed roller (407) is used to contact the plastic pen barrel to be thermoplasticized and feed it; A driven pulley (408) is fixedly connected to the right end of the rotating shaft (406), and the driven pulley (408) rotates coaxially with the feed roller (407); A feeding motor (409) is fixedly arranged at the right end wall of the block groove (405), a pulley is provided at the rotating end of the feeding motor (409), and a belt (410) is provided between the pulley and the driven pulley (408); A tension spring (411) is fixedly connected to the upper end wall of the I-shaped bracket (403) and the right end of the swing plate (404), and is used to pull the swing plate (404) and the block groove (405) as a whole, thereby driving the feed roller (407) to press the pen rod to be thermoplasticized; The plastic-clamping assembly (500) comprises: an adjustment block (501) fixedly connected to the front end of the operating cylinder (401), and an adjustment cavity (502) is provided inside the adjustment block; An inserting plate (503) is fixedly connected to the right end of the adjustment cavity (502), a square through slot is provided in the middle of the inserting plate (503), a square shaft block (504) is slidably provided in the square through slot, and a baffle platform is provided in the middle of the square shaft block (504); A tightening spring (505) is sleeved on the square shaft block (504), and two ends of the tightening spring (505) are respectively fixedly connected to the inserting plate (503) and the square shaft block (504); The screw rod (506) has its right end rotatably connected to the left end of the square shaft block (504), its middle part is threadedly connected to the left end wall of the adjustment block (501), its left end is placed on the outer end of the adjustment block (501), and its left end is fixed with a handle (507) for manual adjustment of the screw rod (506).

2. A plastic pencil production device according to claim 1, characterized in that: The heating assembly (600) comprises: a power supply (601) fixedly arranged on the upper end of the adjustment block (501); The plastic-locking head (602) is fixedly connected to the right end of the square shaft block (504) and is provided with a resistance wire; the plastic-locking head (602) is connected to the power supply (601) via a wire (603).

3. A plastic pencil production device according to claim 2, characterized in that: The pressing assembly (200) comprises: a hydraulic rod (201) fixedly connected to the upper end of the frame (100); a pressing plate (202) fixedly connected to the lower end of the hydraulic rod (201); a heat conduction cavity (203) is provided inside the pressing plate (202); A heating circuit (204) is fixedly arranged in the middle of the heat conduction cavity (203); A pressing head (205) is evenly arranged at the lower end of the pressing plate (202), and the pressing head (205) is connected to the heating circuit (204) and is used for hot pressing of the pen body; A pressing support plate (206) is fixedly arranged at the lower end of the frame (100) and is provided with a groove for completing the hot pressing forming of the semi-cylindrical pen holder together with the pressing head (205).

4. A plastic pencil production device according to claim 3, characterized in that: A pouring block (700) is fixedly provided at the rear end of the operating cylinder (401). The pouring block (700) is in the shape of a thin-walled cylinder with an inner cone and is used for guiding the feeding of the plastic pen barrel. The horizontal axis of the pouring block (700) coincides with the horizontal center axis of the operating cylinder (401).

5. A method for using the plastic pencil production device according to claim 4, characterized in that: Step 1: placing the plastic material in the pressing support plate (206), then starting the heat conduction chamber (203), and the pressing head (205) heats the plastic in the pressing support plate (206) to press and form the plastic; Step 2: Apply adhesive to the fastening surface of the two pressed plastic pen barrels, then put the pen refill in between and fasten the two plastic pen barrels together; Step 3: feeding the preliminarily formed plastic pencil along the pouring block (700) into the feeding assembly (400); Step 4: After the feeding component (400) drives the pen holder forward, the pen holder is thermally plasticized by the heating component (600), and finally the two semi-cylindrical pen holders are plasticized.

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