Sprue shearing device for automotive trim injection-molded part

Abstract

The utility model discloses an automotive trim injection-molded part sprue shearing device which comprises a bottom plate, and a lower mold table is fixedly connected to the bottom plate; the cutting mechanism comprises a vertical plate, a lead screw, a threaded column, a tool rest and a cutter; the four vertical plates are fixed to the four corners of the top face of the lower die table respectively, the two vertical plates on one side of the lower die table are rotationally connected with one lead screw, the two vertical plates on the other side of the lower die table are rotationally connected with the other lead screw, and the two threaded columns are in threaded connection with the two lead screws respectively. The two ends of the tool rest are fixedly connected with the two threaded columns respectively, and the cutter is fixedly connected into the tool rest. According to the utility model, the sprue can be cut off after injection molding is finished, the processing steps of injection molding parts are reduced, and the processing time is shortened, so that the processing efficiency is improved, and the cutter can be quickly replaced when not sharp.

Description

Technical Field

[0001] This utility model relates to the field of automotive interior injection molding processing technology, specifically to a gate shearing device for automotive interior injection molding. Background Technology

[0002] In automotive interiors, some interior components are made of plastic. Therefore, automotive interior trim is made by injection molding. Injection molding involves injecting heated and molten material into a mold cavity through runners and gates. After the material cools and solidifies, it is removed from the mold, forming an injection molded part with a certain shape and structure. Usually, after the injection molded part is removed from the mold, a gate connected to the injection molded part remains in the runner of the injection port. Since the presence of the gate will affect the normal use of the injection molded part, it needs to be removed.

[0003] After the injection molding of automotive interior parts is completed, the injection molded parts need to be removed from the mold and sent to a shearing device. After being clamped and fixed, the gate is cut off. After shearing, the injection molded parts are then transported to the next process for further processing. This increases the number of steps in the injection molding process, thus consuming more time and reducing the efficiency of automotive interior injection molding parts processing. Utility Model Content

[0004] The purpose of this utility model is to provide a gate shearing device for injection-molded automotive interior parts, thereby solving the problems mentioned in the background section. To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a gate shearing device for injection-molded automotive interior parts, comprising:

[0006] A base plate, on which a lower mold platform is fixedly connected;

[0007] A cutting mechanism, comprising a vertical plate, a lead screw, a threaded column, a tool holder, and a cutting blade;

[0008] The vertical plates are four in number and are fixed at the four corners of the top surface of the lower mold table. Two vertical plates on one side of the lower mold table are rotatably connected to a lead screw, and two vertical plates on the other side of the lower mold table are rotatably connected to another lead screw. There are two threaded posts and they are threadedly connected to the two lead screws respectively. The two ends of the tool holder are fixedly connected to the two threaded posts respectively, and the cutter is fixedly connected inside the tool holder.

[0009] Furthermore, a lower support leg is fixed to the bottom of the lower mold platform, an upper support leg is fixed to the top of the lower mold platform, the lower support leg is fixedly connected to the base plate, a top plate is fixedly connected to the top surface of the upper support leg, a cylinder is fixedly connected to the top surface of the top plate, the telescopic rod of the cylinder passes through the top plate and is fixedly connected to the upper mold platform, and a pouring gate is fixedly connected to the top surface of the upper mold platform.

[0010] Furthermore, it also includes a transmission mechanism, which comprises a fixed plate, a rack, and gears;

[0011] There are two fixed plates that are symmetrically fixed to the side of the upper mold table. There are two racks that are fixed to the side wall of the fixed plates respectively. There are two gears that are fixed to the ends of the two lead screws respectively. The racks mesh with the gears.

[0012] Furthermore, the two lead screws have opposite thread directions, and two square holes are symmetrically opened on one side of the top surface of the lower die table, through which the other end of the rack passes.

[0013] Furthermore, the blade holder has a second slot, the back of the cutter is inserted into the second slot, the top surface of the blade holder has a plurality of first threaded holes, the first threaded holes penetrate the blade holder, the cutter has a plurality of second threaded holes, and the second threaded holes are threadedly connected to the second slot after coinciding with the second slot.

[0014] Furthermore, a square plate is fixedly connected to one side of the threaded column, and a first slot is provided on the side wall of the square plate. Insert plates are fixedly connected to both ends of the tool holder, and the insert plates are inserted into the first slot.

[0015] Furthermore, it also includes a fixing component, which includes a round tube, a plug, a baffle, a pull post, and a spring;

[0016] The circular tube is fixedly connected to the top of the square plate, the baffle is slidably connected inside the circular tube, the insert post is fixedly connected to the bottom surface of the baffle, the pull post is fixedly connected to the top surface of the baffle, the other end of the pull post passes through the top of the circular tube, the two ends of the spring are fixedly connected to the top surface of the baffle and the top surface of the circular tube respectively, and the pull post passes through the spring.

[0017] Furthermore, a first slot is provided on the top surface of the square plate, the first slot penetrates the square plate, and a second insertion hole is provided on the top surface of the insertion plate, the second insertion hole coincides with the first insertion hole and is passed through by the insertion post.

[0018] This utility model has the following beneficial effects:

[0019] In this invention, after injection molding is completed at the sprue, the upper mold platform is raised by a cylinder. The rise of the upper mold platform drives two lead screws to rotate through the transmission mechanisms on both sides. The two lead screws drive two threaded columns to slide simultaneously. The two threaded columns drive the tool holder to slide, and the tool holder drives the cutter to slide and cut off the sprue. The sprue can be cut off after injection molding, reducing the number of processing steps for the injection molded part, shortening the processing time, and thus improving the processing efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the cutter fixing structure of this utility model;

[0024] Figure 4 This utility model Figure 1 A schematic diagram of the structure of part A in the diagram;

[0025] Figure 5 This utility model Figure 2 A schematic diagram of the structure of part B in the diagram;

[0026] Figure 6 This utility model Figure 3 A schematic diagram of section C in the diagram.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 110. Base plate; 120. Top plate;

[0029] 210. Lower mold platen; 211. Lower support leg; 212. Upper support leg; 213. Square hole; 220. Upper mold platen; 221. Sprue;

[0030] 310. Vertical plate; 320. Lead screw; 330. Threaded column; 331. Square plate; 332. First slot; 333. First insertion hole; 340. Tool holder; 341. Second slot; 342. First threaded hole; 343. Screw; 344. Insert plate; 345. Second insertion hole; 350. Cutting blade; 351. Second threaded hole; 360. Fixing assembly;

[0031] 361. Round tube; 362. Insert post; 363. Baffle; 364. Pull post; 365. Spring;

[0032] 400, cylinder;

[0033] 510. Fixing plate; 520. Rack; 530. Gear. Detailed Implementation

[0034] 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.

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings;

[0036] Please see Figure 1-6 As shown, this utility model is a gate shearing device for injection-molded automotive interior parts, comprising:

[0037] Base plate 110, on which lower mold stage 210 is fixedly connected;

[0038] The cutting mechanism includes a vertical plate 310, a lead screw 320, a threaded column 330, a tool holder 340, and a cutting blade 350.

[0039] There are four upright plates 310, which are fixed to the four corners of the top surface of the lower mold plate 210. Two upright plates 310 on one side of the lower mold plate 210 are rotatably connected to the lead screw 320, and two upright plates 310 on the other side of the lower mold plate 210 are rotatably connected to another lead screw 320. There are two threaded columns 330, which are threadedly connected to the two lead screws 320 respectively. The two ends of the tool holder 340 are fixedly connected to the two threaded columns 330 respectively. The cutter 350 is fixedly connected inside the tool holder 340. The rotation of the two lead screws 320 drives the two threaded columns 330 to slide. The sliding of the two threaded columns 330 drives the tool holder 340 to slide. The tool holder 340 drives the cutter 350 to slide. The sliding of the cutter 350 cuts off the gate.

[0040] The lower mold base 210 has a lower support leg 211 fixed at the bottom and an upper support leg 212 fixed at the top. The lower support leg 211 is fixedly connected to the base plate 110. The top surface of the upper support leg 212 is fixedly connected to the top plate 120. The top surface of the top plate 120 is fixedly connected to the cylinder 400. The telescopic rod of the cylinder 400 passes through the top plate 120 and is fixedly connected to the upper mold base 220. The top surface of the upper mold base 220 is fixedly connected to the sprue 221. The injection molded part is poured through the sprue 221. After the pouring is completed, the cylinder 400 is activated, and the cylinder 400 drives the upper mold base 220 to rise.

[0041] It also includes a transmission mechanism, which includes a fixed plate 510, a rack 520, and a gear 530.

[0042] There are two fixed plates 510 that are symmetrically fixedly connected to the side of the upper mold table 220. There are two racks 520 that are fixedly connected to the side wall of the fixed plates 510 respectively. There are two gears 530 that are fixedly connected to the ends of the two lead screws 320 respectively. The racks 520 and gears 530 mesh. When the upper mold table 220 rises, it drives the two fixed plates 510 to rise. The two fixed plates 510 drive the two racks 520 to rise respectively. The two racks 520 drive the two gears 530 to rotate respectively. The two gears 530 drive the two lead screws 320 to rotate respectively.

[0043] The threads of the two lead screws 320 are opposite, so that when the two lead screws 320 rotate, they drive the two threaded columns 330 to move in the same direction. Two square holes 213 are symmetrically opened on one side of the top surface of the lower mold table 210, and the other end of the rack 520 passes through the square holes 213.

[0044] Working principle: The injection molded part is poured through the sprue 221. After pouring, the cylinder 400 is activated, which drives the upper mold platform 220 to rise. The rise of the upper mold platform 220 drives the two fixed plates 510 to rise. The two fixed plates 510 drive the two racks 520 to rise, which in turn drive the two gears 530 to rotate. The two gears 530 drive the two lead screws 320 to rotate, which in turn drive the two threaded posts 330 to slide. The sliding of the two threaded posts 330 drives the tool holder 340 to slide, which in turn drives the cutter 350 to slide. The cutter 350 cuts off the sprue, and the injection molded part is then removed. The cylinder 400 is started and descends, which drives the upper mold table 220 to descend. The upper mold table 220 drives the two fixed plates 510 to descend. The two fixed plates 510 drive the two racks 520 to descend respectively. The two racks 520 drive the two gears 530 to reverse. The two gears 530 drive the two lead screws 320 to reverse. The two lead screws 320 drive the two threaded columns 330 to slide in the opposite direction. The two threaded columns 330 drive the tool holder 340 to slide in the opposite direction. The tool holder 340 drives the cutter 350 to slide in the opposite direction. When the cutter 350 slides close to the rack 520, the upper mold table 220 and the lower mold table 210 overlap, and the next injection molding is performed.

[0045] Please see Figure 1-6 As shown, this embodiment, based on the above embodiment, further includes:

[0046] The blade holder 340 has a second slot 341. The back of the cutter 350 is inserted into the second slot 341. The top surface of the blade holder 340 has multiple first threaded holes 342 that penetrate the blade holder 340. The cutter 350 has multiple second threaded holes 351. The second threaded holes 351 and the second slot 341 are aligned and then threaded with screws 343. After inserting the back of the cutter with the second threaded hole 351 into the second slot 341, the second threaded hole 351 and the second slot 341 are aligned. Then, the screws 343 are used to thread the second threaded hole 351 and the second slot 341 to fix the cutter 350 in the blade holder 340.

[0047] A square plate 331 is fixedly connected to one side of the threaded column 330. A first slot 332 is opened on the side wall of the square plate 331. A plug plate 344 is fixedly connected to both ends of the tool holder 340. The plug plate 344 is inserted into the first slot 332. Inserting the plug plate 344 into the first slot 332 will initially connect the plug plate 344 to the square plate 331.

[0048] It also includes a fixing component 360, which includes a round tube 361, a plug 362, a baffle 363, a pull post 364, and a spring 365;

[0049] A circular tube 361 is fixedly connected to the top of a square plate 331. A baffle 363 is slidably connected inside the circular tube 361. A pin 362 is fixedly connected to the bottom surface of the baffle 363. A pull pin 364 is fixedly connected to the top surface of the baffle 363. The other end of the pull pin 364 passes through the top of the circular tube 361. The two ends of a spring 365 are fixedly connected to the top surface of the baffle 363 and the top surface of the circular tube 361, respectively. The pull pin 364 passes through the spring 365. Pulling the pull pin 364 causes the baffle 363 to rise and compresses the spring 365. The baffle 363 causes the pin 362 to rise. Releasing the pull pin 364 causes the spring 365 to rebound. The spring 365 causes the baffle 363 to fall. The baffle 363 causes the pull pin 364 and the pin 362 to fall.

[0050] A first slot 332 is provided on the top surface of the square plate 331, and the first slot 332 penetrates the square plate 331. A second insertion hole 345 is provided on the top surface of the insert plate 344. After the second insertion hole 345 coincides with the first insertion hole 333, the insertion post 362 passes through it. After the insert plate 344 is inserted into the first slot 332, the second insertion hole 345 coincides with the first insertion hole 333. The spring 365 rebounds and drives the baffle 363 and the insertion post 362 to descend in sequence, and the insertion post 362 is inserted into the first insertion hole 333 and the second insertion hole 345, so that the insert plate 344 is fixed to the square plate 331, thereby fixing the tool holder 340 and the thread post 330.

[0051] Working principle: When the cutter 350 needs to be replaced due to dullness, pulling the pull column 364 causes the baffle 363 to rise, compressing the spring 365. The baffle 363 then causes the insertion post 362 to rise, pulling it out from the first insertion hole 333 and the second insertion hole 345. The insertion plate 344 is then pulled out from the first threaded hole 342, separating the cutter holder 340 from the threaded post 330. Using a screwdriver, the screw 343 is removed from the first threaded hole 342 and the second threaded hole 351. The cutter 350 is then pulled out from the second slot 341. The back of the new cutter 350 is inserted into the second slot 341, aligning the first threaded hole 342 with the second threaded hole 351. The screw 343 is then threaded into the first threaded hole 342 using a screwdriver. After connecting the second threaded hole 351, fix the cutter 350 to the tool holder 340. Pull the pull column 364 again to raise the baffle 363 and compress the spring 365. The baffle 363 raises the insertion column 362, pulling the insertion column 362 out of the first insertion hole 333. Insert the insertion plate 344 into the first slot 332, making the second insertion hole 345 coincide with the first insertion hole 333. Release the pull column 364 to allow the spring 365 to rebound. The spring 365 lowers the baffle 363, which in turn lowers the pull column 364 and the insertion column 362, allowing the insertion column 362 to be inserted into the first insertion hole 333 and the insertion plate 344. This fixes the insertion plate 344 to the square plate 331, thereby fixing the tool holder 340 to the threaded column 330, enabling quick replacement of the cutter 350.

[0052] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sprue shear device for an automotive interior injection molded part, characterized by, include: A base plate (110) is fixedly connected to a lower mold platform (210); A cutting mechanism, comprising a vertical plate (310), a lead screw (320), a threaded column (330), a tool holder (340), and a cutting blade (350); There are four upright plates (310) and they are fixed at the four corners of the top surface of the lower mold table (210). Two upright plates (310) on one side of the lower mold table (210) are rotatably connected to the lead screw (320), and two upright plates (310) on the other side of the lower mold table (210) are rotatably connected to another lead screw (320). There are two threaded posts (330) and they are threadedly connected to the two lead screws (320) respectively. The two ends of the tool holder (340) are fixedly connected to the two threaded posts (330) respectively. The cutter (350) is fixedly connected inside the tool holder (340).

2. The sprue shear device for an automotive interior injection molded part of claim 1, wherein: The lower mold platform (210) is fixed with a lower support leg (211) at the bottom and an upper support leg (212) at the top. The lower support leg (211) is fixedly connected to the base plate (110). The top surface of the upper support leg (212) is fixedly connected to a top plate (120). The top surface of the top plate (120) is fixedly connected to a cylinder (400). The telescopic rod of the cylinder (400) passes through the top plate (120) and is fixedly connected to an upper mold platform (220). The top surface of the upper mold platform (220) is fixedly connected to a pouring gate (221).

3. The sprue shear device for an automotive interior injection molded part of claim 2, wherein: It also includes a transmission mechanism, which includes a fixed plate (510), a rack (520), and a gear (530); There are two fixed plates (510) that are symmetrically fixed to the side of the upper mold table (220). There are two racks (520) that are fixed to the side wall of the fixed plate (510) respectively. There are two gears (530) that are fixed to the ends of the two lead screws (320) respectively. The racks (520) mesh with the gears (530).

4. The gate shearing device for automotive interior injection molded parts according to claim 3, characterized in that: The two lead screws (320) have opposite thread directions, and two square holes (213) are symmetrically opened on one side of the top surface of the lower die table (210), through which the other end of the rack (520) passes.

5. The gate shear device for an automotive interior injection molded part of claim 4, wherein: The tool holder (340) has a second slot (341), and the back of the cutter (350) is inserted into the second slot (341). The top surface of the tool holder (340) has a plurality of first threaded holes (342), which penetrate the tool holder (340). The cutter (350) has a plurality of second threaded holes (351), and the second threaded holes (351) are threaded together with the second slot (341) to form a screw (343).

6. The gate shear device for an automotive interior injection molded part of claim 5, wherein: A square plate (331) is fixedly connected to one side of the threaded column (330). A first slot (332) is provided on the side wall of the square plate (331). Insert plates (344) are fixedly connected to both ends of the tool holder (340). The insert plates (344) are inserted into the first slot (332).

7. The gate shear device for an automotive interior injection molded part of claim 6, wherein: It also includes a fixing component (360), which includes a round tube (361), a plug (362), a baffle (363), a pull post (364), and a spring (365); The circular tube (361) is fixedly connected to the top of the square plate (331), the baffle (363) is slidably connected inside the circular tube (361), the insert (362) is fixedly connected to the bottom surface of the baffle (363), the pull post (364) is fixedly connected to the top surface of the baffle (363), the other end of the pull post (364) passes through the top of the circular tube (361), the two ends of the spring (365) are fixedly connected to the top surface of the baffle (363) and the top surface of the circular tube (361) respectively, and the pull post (364) passes through the spring (365).

8. The gate shear device for an automotive interior injection molded part of claim 7, wherein: The top surface of the square plate (331) is provided with a first slot (332), which penetrates the square plate (331). The top surface of the insert plate (344) is provided with a second insertion hole (345), which overlaps with the first insertion hole (333) and is passed through by the insertion post (362).

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