Pencil lead extrusion equipment

Abstract

The utility model discloses pencil lead extrusion equipment, which relates to the field of pencil lead production, and comprises a base, a stirring box for stirring raw materials is fixed at the top end of the base, an extrusion barrel for discharging the raw materials is arranged at the bottom end of the stirring box, an extruder for extruding the raw materials is arranged at one end of the extrusion barrel, and the other end of the extrusion barrel is provided with an extruder for extruding the raw materials. The transmission mechanism is arranged on the base and the extruder; the transmission mechanism comprises a transmission unit and a slitting unit; the transmission unit is used for providing power for movement of the slitting unit. And the slitting unit is used for slitting the raw materials at equal intervals. By arranging the transmission mechanism, in the process of extruding raw materials, the transmission rod can be synchronously driven to axially move, the axially-moving transmission rod drives the cutter to rotate, the cutter cuts the raw materials at equal intervals, then the cutter resets under the action of the spring, the operation is repeated, manual cutting is not needed, it is guaranteed that the raw material slitting distances are the same, and the cutting efficiency is improved. The working efficiency is further improved, and the waste of raw materials is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pencil lead production, specifically a pencil lead extrusion device. Background Technology

[0002] The main component of pencil lead is graphite. In fact, pencil lead is made by mixing graphite and clay in a certain proportion. In existing technology, the pencil lead raw material is generally mixed with water using a mixer, then extruded using an extruder. The extruded material is then manually cut at equal intervals, and the cut material is then fed into a fine strip extruder to extrude the coarser material into thin strips. However, manual cutting cannot guarantee that each piece of material is of uniform length, resulting in waste of larger pieces when feeding them into the fine strip extruder. Therefore, to further improve work efficiency and reduce material waste, this invention proposes a pencil lead extrusion device. Utility Model Content

[0003] The purpose of this utility model is to provide a pencil lead extrusion device in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pencil lead extrusion device, comprising a base, a mixing box for stirring raw materials fixed at the top of the base, an extrusion cylinder for discharging raw materials at the bottom of the mixing box, an extruder for extruding raw materials at one end of the extrusion cylinder, and a transmission mechanism mounted on the base and the extruder; the transmission mechanism includes a transmission unit and a slitting unit; the transmission unit provides power for the movement of the slitting unit; the slitting unit is used to equidistantly slit the raw materials.

[0005] As a further embodiment of this utility model: the transmission unit includes a transmission rod, a rack, a spur gear, a first bevel gear, and a second bevel gear; the transmission rod is fixed to the outer wall of the extruder's push rod, and the transmission rod is used to synchronously drive the rack to move; the rack is fixed to the top of the transmission rod, and the rack is used to provide rotational thrust to the spur gear; the spur gear is fixed to the outer wall of the first bevel gear, and the spur gear is used to synchronously drive the first bevel gear to rotate; the first bevel gear is rotatably mounted on the top of the base, and the first bevel gear is used to provide rotational thrust to the second bevel gear; the second bevel gear is fixed to the end of the rotating rod, and the second bevel gear is used to synchronously drive the rotating rod to rotate.

[0006] As a further embodiment of this utility model: the slitting unit includes a support base, a cutter, a rotating rod, a positioning rod, and a spring; the support base is fixed to the top of the base and provides support for the rotation of the rotating rod; the rotating rod is rotatably mounted on the inner wall of the support base and extends to the outer side of the support base, and is used to synchronously drive the cutter to rotate; the cutter is fixed to the outer wall of the rotating rod, and the rotating rod is used to slit the raw material; the positioning rod is fixed inside the support base and provides guidance for the rotation of the rotating rod; the two ends of the spring are respectively engaged with the outer wall of the rotating rod and the inner wall of the support base, and the spring provides a restoring force for the rotation of the rotating rod.

[0007] As a further improvement of this utility model, the number of racks is set to multiple, and the multiple racks are evenly distributed at the top of the transmission rod.

[0008] As a further improvement of this utility model: a certain distance is provided between the plurality of said racks, and the reserved distance between the racks is the length of the raw material extrusion.

[0009] As a further embodiment of this utility model: the outer wall of the first bevel gear meshes with the outer wall of the second bevel gear, the outer wall of the rack meshes with the outer wall tooth block of the spur gear, and the spur gear rotates at an angle of ninety degrees due to the influence of the rack.

[0010] As a further embodiment of this utility model: the outer wall of the rotating rod is fixed with a protrusion that is sleeved on the outer wall of the positioning rod, and the inner wall of the support base is provided with a movable groove for the circumferential rotation of the protrusion on the outer wall of the rotating rod.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By setting up a transmission mechanism, the transmission rod can be moved axially synchronously during the extrusion of raw materials. The axially moving transmission rod drives the cutter to rotate, so that the cutter cuts the raw materials at equal intervals. Afterwards, the cutter returns to its original position under the action of a spring. This process is repeated, eliminating the need for manual cutting and ensuring that the spacing between the cut raw materials is the same, further improving work efficiency and reducing material waste. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the transmission mechanism of this utility model;

[0015] Figure 3 This is a partial enlarged view of point A of this utility model.

[0016] In the diagram: 1. Base; 2. Mixing tank; 3. Extrusion cylinder; 4. Extruder; 5. Transmission mechanism; 501. Transmission rod; 502. Rack; 503. Spur gear; 504. First bevel gear; 505. Second bevel gear; 506. Support base; 507. Cutter; 508. Rotating rod; 509. Positioning rod; 510. Spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3 In this embodiment of the utility model, a pencil lead extrusion device includes a base 1, a mixing box 2 for stirring raw materials is fixed at the top of the base 1, an extrusion cylinder 3 for discharging raw materials is provided at the bottom of the mixing box 2, an extruder 4 for extruding raw materials is provided at one end of the extrusion cylinder 3, and a transmission mechanism 5 is provided on the base 1 and the extruder 4; the transmission mechanism 5 includes a transmission unit and a cutting unit; the transmission unit provides power for the movement of the cutting unit; the cutting unit is used to cut the raw materials at equal intervals.

[0019] The transmission unit includes a transmission rod 501, a rack 502, a spur gear 503, a first bevel gear 504, and a second bevel gear 505. The transmission rod 501 is fixed to the outer wall of the push rod of the extruder 4 and is used to synchronously drive the rack 502 to move. The rack 502 is fixed to the top of the transmission rod 501 and is used to provide rotational thrust to the spur gear 503. The spur gear 503 is fixed to the outer wall of the first bevel gear 504 and is used to synchronously drive the first bevel gear 504 to rotate. The first bevel gear 504 is rotatably mounted on the top of the base 1 and is used to provide rotational thrust to the second bevel gear 505. The second bevel gear 505 is fixed to the end of the rotating rod 508 and is used to synchronously drive the rotating rod 508 to rotate.

[0020] The slitting unit includes a support base 506, a cutter 507, a rotating rod 508, a positioning rod 509, and a spring 510. The support base 506 is fixed to the top of the base 1 and provides support for the rotation of the rotating rod 508. The rotating rod 508 is rotatably mounted on the inner wall of the support base 506 and extends to the outer side of the support base 506. The rotating rod 508 is used to synchronously drive the cutter 507 to rotate. The cutter 507 is fixed to the outer wall of the rotating rod 508, and the rotating rod 508 is used to slitting the raw materials.

[0021] The positioning rod 509 is fixed inside the support base 506 and is used to guide the rotation of the rotating rod 508. The two ends of the spring 510 are respectively engaged with the outer wall of the rotating rod 508 and the inner wall of the support base 506 and are used to provide a restoring force for the rotation of the rotating rod 508.

[0022] In this embodiment: by starting the extruder 4, the raw material from inside the mixing tank 2 is extruded through the extrusion cylinder 3. During the axial movement of the extruder 4, the transmission rod 501 fixed on the outer wall moves axially simultaneously, causing the rack 502 fixed on the outer wall of the transmission rod 501 to move axially synchronously. The movement of the rack 502 will cause the spur gear 503 meshing with the outer wall to rotate. The rotating spur gear 503 will synchronously drive the first bevel gear 504 to rotate clockwise. The clockwise rotation of the first bevel gear 504 will synchronously give the second bevel gear 505 meshing with the outer wall a rotational thrust. Since the second bevel gear 505 and the first bevel gear 504 are perpendicularly meshed, the second bevel gear 505 will also... Rotating clockwise causes the rotating rod 508, which is fixed to the shaft of the second bevel gear 505, to rotate synchronously. This causes the cutter 507, which is fixed to the outer wall of the rotating rod 508, to rotate and cut the raw material discharged from the extrusion cylinder 3. Afterward, as the transmission rod 501 continues to move, the rack 502 no longer meshes with the outer wall of the spur gear 503. Then, the cutter 507 and the rotating rod 508 will be reset under the action of the spring 510, waiting for the next rack 502 to contact the spur gear 503. This process is repeated to complete the purpose of equidistant cutting of the raw material, ensuring that the length of each cut is consistent, reducing the number of drive units, lowering costs, avoiding material waste, and further improving work efficiency.

[0023] Please refer to this carefully. Figures 1-3 Multiple racks 502 are provided, and the multiple racks 502 are evenly distributed at the top of the transmission rod 501. A certain distance is provided between the multiple racks 502, and the reserved distance between the racks 502 is the length of the raw material extrusion. The outer wall of the first bevel gear 504 meshes with the outer wall of the second bevel gear 505. The outer wall of the rack 502 meshes with the outer wall tooth block of the spur gear 503. The spur gear 503 rotates by 90 degrees due to the influence of the rack 502. The outer wall of the rotating rod 508 is fixed with a protrusion that is sleeved on the outer wall of the positioning rod 509. The inner wall of the support base 506 is provided with a movable groove for the circumferential rotation of the protrusion on the outer wall of the rotating rod 508.

[0024] In this embodiment: With this structure, when the rotating rod 508 drives the cutter 507 to rotate along with the rotation of the second bevel gear 505, the protrusion on the outer wall of the rotating rod 508 will also move along the outer wall of the positioning rod 509 and apply a squeezing force to the spring 510 until the second bevel gear 505 loses the rotational thrust from the first bevel gear 504, so that the cutter 507 can quickly reset under the action of the spring 510.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pencil lead extrusion device, comprising a base (1), a mixing tank (2) for stirring raw materials fixed at the top of the base (1), an extrusion cylinder (3) for discharging raw materials provided at the bottom of the mixing tank (2), and an extruder (4) for extruding raw materials provided at one end of the extrusion cylinder (3), characterized in that, A transmission mechanism (5) is provided on the base (1) and the extruder (4); the transmission mechanism (5) includes a transmission unit and a cutting unit; the transmission unit provides power for the movement of the cutting unit; the cutting unit is used to cut the raw material at equal intervals; The transmission unit includes a transmission rod (501), a rack (502), a spur gear (503), a first bevel gear (504), and a second bevel gear (505). The transmission rod (501) is fixed to the outer wall of the push rod of the extruder (4), and the transmission rod (501) is used to synchronously drive the rack (502) to move. The rack (502) is fixed to the top of the transmission rod (501), and the rack (502) is used to provide rotational thrust to the spur gear (503). The spur gear (503) is fixed to the outer wall of the first bevel gear (504), and the spur gear (503) is used to synchronously drive the first bevel gear (504) to rotate. The first bevel gear (504) is rotatably mounted on the top of the base (1), and the first bevel gear (504) is used to provide rotational thrust to the second bevel gear (505). The second bevel gear (505) is fixed to the end of the rotating rod (508), and the second bevel gear (505) is used to synchronously drive the rotating rod (508) to rotate. The slitting unit includes a support base (506), a cutter (507), a rotating rod (508), a positioning rod (509), and a spring (510). The support base (506) is fixed to the top of the base (1) and provides support for the rotation of the rotating rod (508). The rotating rod (508) is rotatably mounted on the inner wall of the support base (506) and extends to the outer side of the support base (506). The rotating rod (508) is used to synchronously drive the cutter (507) to rotate. The cutter (507) is fixed to the outer wall of the rotating rod (508), which is used to cut the raw material; the positioning rod (509) is fixed inside the support base (506), which is used to guide the rotation of the rotating rod (508); the two ends of the spring (510) are respectively engaged with the outer wall of the rotating rod (508) and the inner wall of the support base (506), which is used to provide a restoring force for the rotation of the rotating rod (508); The number of racks (502) is provided in multiples, and the multiple racks (502) are evenly distributed at the top end of the transmission rod (501); A gap is provided between the plurality of said racks (502), and the gap reserved between the racks (502) is the length of the raw material extrusion; The outer wall of the first bevel gear (504) meshes with the outer wall of the second bevel gear (505), the outer wall of the rack (502) meshes with the outer wall tooth block of the spur gear (503), and the spur gear (503) rotates at an angle of ninety degrees due to the influence of the rack (502).

2. The pencil lead extrusion equipment according to claim 1, characterized in that, The outer wall of the rotating rod (508) is fixed with a protrusion that is sleeved on the outer wall of the positioning rod (509), and the inner wall of the support base (506) is provided with a movable groove for the circumferential rotation of the protrusion on the outer wall of the rotating rod (508).

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