Injection molding device for plastic shell of stationery
By introducing airbag dust removal and trimming and unloading mechanisms into the injection molding device, the problem of dust and debris residues in the mold is solved, and the product quality is guaranteed and production efficiency is improved.
Patent Information
- Application Number
- CN202421026964.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-13
AI Technical Summary
Existing injection molds are prone to plastic debris and dust residues during the production process, resulting in a decline in product quality.
A plastic shell injection molding device for stationery supplies was designed, using an airbag dust removal mechanism and a trimming and unloading mechanism. The airbag compresses and unfolds through the sliding of the upper template and the lower template, and uses the nozzle to spray air to clean up the internal dust and debris, and The push plate and slider are driven by the reciprocating screw, flip of the lower formwork and cut scraps.
Effectively remove dust and debris inside the mold, ensure product quality, and improve the cleanliness and efficiency of the production process.
Smart Images
Figure CN222201489U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to an injection molding device for a plastic shell of a stationery product. Background Art
[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine (referred to as injection machine or injection molding machine) is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds.
[0003] An energy-saving industrial injection mold disclosed in an existing patent (publication number: CN 220826257U) solves the problems raised in the background technology. It includes a lower mold and an upper mold, the upper mold is located above the lower mold, and the upper mold and the lower mold are limited by a first fixed rod. The number of the first fixed rods is four, and the four first fixed rods are respectively located at the four corners of the top of the lower mold. A slide groove is provided on the surface of the upper mold, and a slide rod is slidably inserted in the inner cavity of the slide groove, and an inclined block is fixedly connected to the bottom of the slide rod. The inner cavity of the upper mold is located at the bottom of the slide groove and a limiting groove is also provided, and a limiting block is slidably inserted in the inner cavity of the limiting groove, and a pressing block is fixedly connected to the bottom of the limiting block. By aligning the upper mold and the lower mold and squeezing them, and then pouring the raw material through the injection port of the upper mold, injection molding can be performed through the upper mold and the lower mold. When the injection molding is completed, the upper mold is slid upward along the first fixed rod, and then When the slider is pulled toward the front side of the rear slide slot, the slider will drive the inclined block to slide. Since the approaching surfaces of the inclined block and the limit block are inclined, the inclined block will squeeze the limit block downward when sliding, and the limit block will slide downward, and the limit block will drive the pressure block to slide downward. When the limit block slides downward, it will drive the limit rod to slide downward along the second fixed rod in the slideway, and the limit rod will squeeze the spring when it slides downward, and the pressure block will squeeze the injection molded part, thereby removing the injection molded part. Then release and pull the slider, the squeezing force on the spring will disappear, and the spring will rebound the limit rod upward, and the limit rod will drive the limit block to slide upward, and the limit block will squeeze the inclined block, and the inclined block will drive the slider to return to its initial state, thereby completing demoulding, and realizing that the injection molded part can be manually removed, thereby facilitating the demoulding of the injection molded part, saving more time and electricity, and improving the practicality of the entire device.
[0004] However, the above technical solution still has certain defects. During the production process, every time a product is formed inside the mold, when the product is taken out from the mold, some plastic debris and dust may remain inside the mold. In the subsequent production process, these debris and dust will stick to the subsequent products, thereby causing a decrease in product quality. For this reason, a stationery plastic shell injection molding device is proposed. Utility Model Content
[0005] Based on this, the purpose of the utility model is to provide a stationery plastic shell injection molding device to solve the technical problems raised in the above background.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stationery plastic shell injection molding device, comprising a support plate, the side wall of the support plate is fixedly connected to a plurality of guide rods, the outer walls of the plurality of guide rods are slidably connected to an upper mold plate, the top end of the upper mold plate is connected to a feed pipe, and the side wall of the upper mold plate is fixedly connected to a dust removal mechanism;
[0007] The dust removal mechanism includes an airbag, which is fixedly connected to the top of the support plate, and a push rod is fixedly connected to the top of the airbag, and the top of the push rod is fixedly connected to the side wall of the upper template. The side wall of the airbag is connected to two groups of air pipes, and the end of each group of air pipes is respectively connected to a group of nozzles, and the nozzles are fixedly connected to the side wall of the support plate. A plurality of groups of air inlet holes are provided at the bottom end of the inner wall of the airbag, and a plurality of groups of flaps are hinged to the bottom end of the inner wall of the airbag, and the position of each group of flaps corresponds to a group of air inlet holes.
[0008] As a preferred technical solution of a stationery plastic shell injection molding device of the utility model, a trimming and blanking mechanism is arranged inside the support plate, and the trimming and blanking mechanism includes a reciprocating screw rod, and the reciprocating screw rod is rotatably connected to the side wall of the support plate.
[0009] As an optimal technical solution for a stationery plastic shell injection molding device of the utility model, the outer wall of the reciprocating screw is threadedly connected to a push plate, the inner wall sliding sleeve of the push plate is provided with a directional rod, the directional rod is fixedly connected to the side wall of the support plate, the side wall of the push plate is rotatably connected to a bracket, and the bracket is slidably sleeved on the outer wall of the directional rod.
[0010] As a preferred technical solution of the stationery plastic shell injection molding device of the utility model, a straight groove is formed at the top of the directional rod, and a rotation groove is formed at the end of the directional rod away from the bracket, and the rotation groove is connected to one end of the straight groove.
[0011] As a preferred technical solution of a stationery plastic shell injection molding device of the utility model, a slider is fixedly connected to the inner wall of the bracket, the slider extends to the inside of the straight groove, and two sets of sliding frames are slidably connected to the top of the bracket.
[0012] As an optimal technical solution for the plastic shell injection molding device of stationery products of the utility model, the top ends of the two groups of sliding frames are fixedly connected with lower templates, one side of the lower templates is rotatably connected to the outer wall of the directional rod through a connecting piece, and the top end of the bracket is fixedly connected with a blade.
[0013] As a preferred technical solution of the stationery plastic shell injection molding device of the utility model, the end of the reciprocating screw is fixedly connected to a turning handle extending to the outside of the support plate, and the outer wall fixed sleeve of the turning handle is provided with a rubber sleeve.
[0014] In summary, the utility model mainly has the following beneficial effects:
[0015] 1. The utility model drives the ejector rod during the up and down sliding of the upper template, thereby compressing and expanding the airbag, so that air is continuously sucked into the airbag and then ejected from the nozzle, so that dust and debris inside the upper and lower templates are blown away, avoiding the impact on product quality in the subsequent production process, and ensuring the quality of subsequent products;
[0016] 2. The utility model rotates the reciprocating screw rod to make the push plate slide back and forth on the outer wall of the directional rod, thereby sliding the slider inside the straight groove and the rotating groove, driving the lower template to flip and reset, and making the blade slide on the top of the lower template, so that the scraps on the stationery shell are cut off, and the stationery shell falls out from the lower template. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0018] Figure 2 It is a rear view structural schematic diagram of the utility model;
[0019] Figure 3 This is a schematic diagram of the main structure of the trimming and blanking mechanism of the utility model;
[0020] Figure 4 This is a schematic diagram of the position relationship structure of the slider of the utility model;
[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the airbag of the utility model.
[0022] In the figure: 1. Support plate; 2. Guide rod; 3. Upper template; 4. Dust removal mechanism; 5. Trimming and unloading mechanism; 6. Lower template; 7. Feed pipe;
[0023] 401, air bag; 402, ejector rod; 403, air pipe; 404, nozzle; 405, air inlet; 406, flap;
[0024] 501, reciprocating screw rod; 502, pushing plate; 503, directional rod; 504, bracket; 505, straight groove; 506, rotating groove; 507, slider; 508, sliding frame; 509, blade. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0026] The following describes an embodiment of the utility model based on its overall structure.
[0027] A stationery plastic shell injection molding device, such as Figures 1 to 5 As shown, it includes a support plate 1, a plurality of guide rods 2 are fixedly connected to the side wall of the support plate 1, an upper template 3 is slidably connected to the outer wall of the plurality of guide rods 2, a feed pipe 7 is connected to the top of the upper template 3, and a dust removal mechanism 4 is fixedly connected to the side wall of the upper template 3;
[0028] The dust removal mechanism 4 includes an airbag 401, which is fixedly connected to the top of the support plate 1. The top of the airbag 401 is fixedly connected to a push rod 402. The top of the push rod 402 is fixedly connected to the side wall of the upper template 3. The side wall of the airbag 401 is connected to two groups of air pipes 403. The end of each group of air pipes 403 is respectively connected to a group of nozzles 404. The nozzles 404 are fixedly connected to the side wall of the support plate 1. A plurality of groups of air inlet holes 405 are provided at the bottom end of the inner wall of the airbag 401. A plurality of groups of flaps 406 are hinged to the bottom end of the inner wall of the airbag 401. The position of each group of flaps 406 corresponds to a group of air inlet holes 405.
[0029] The upper template 3 is driven by hydraulic equipment to slide up and down on the outer wall of the guide rod 2, so that the upper template 3 and the lower template 6 are closed and separated. In the process of the upper template 3 sliding upward, the push rod 402 is driven, so that the push rod 402 drives the airbag 401 to unfold, thereby generating negative pressure inside the airbag 401, so that the flap 406 flips open, allowing air to enter the airbag 401 from the air inlet 405. In the process of the upper template 3 sliding downward, the upper template 3 drives the push rod 402 to move downward, thereby compressing the airbag 401, so that a higher air pressure is generated inside the airbag 401. At this time, the flap 406 is reset and closed. At this time, the air cannot be discharged through the air inlet 405, so that the air inside the airbag 401 is ejected from the nozzle 404 through the air pipe 403, so that the airflow is sprayed onto the upper template 3 and the lower template 6, and the upper template 3 and the lower template 6 are cleaned.
[0030] Please refer to Figures 1 to 4 The support plate 1 is provided with a trimming and blanking mechanism 5 inside, which includes a reciprocating screw 501, which is rotatably connected to the side wall of the support plate 1, and the outer wall of the reciprocating screw 501 is threadedly connected to a push plate 502, and the inner wall of the push plate 502 is slidably sleeved with a directional rod 503, which is fixedly connected to the side wall of the support plate 1, and the side wall of the push plate 502 is rotatably connected with a bracket 504, which is slidably sleeved on the outer wall of the directional rod 503, and a straight groove 505 is provided on the top of the directional rod 503, and the end of the directional rod 503 away from the bracket 504 is opened. A rotating groove 506 is provided, which is connected to one end of the straight groove 505. A slider 507 is fixedly connected to the inner wall of the bracket 504, and the slider 507 extends to the inside of the straight groove 505. The top of the bracket 504 is slidably connected to two groups of sliding frames 508, and the tops of the two groups of sliding frames 508 are fixedly connected to the lower template 6. One side of the lower template 6 is rotatably connected to the outer wall of the directional rod 503 through a connecting piece. A blade 509 is fixedly connected to the top of the bracket 504, and the end of the reciprocating screw rod 501 is fixedly connected to a turning handle extending to the outside of the support plate 1, and the outer wall of the turning handle is fixedly sleeved with a rubber sleeve.
[0031] After the upper template 3 and the lower template 6 are separated, the reciprocating screw rod 501 is rotated to make the reciprocating screw rod 501 drive the push plate 502 to move forward, so that the push plate 502 pushes the bracket 504 to slide on the outer wall of the directional rod 503, and slides on the outer wall of the sliding frame 508 during the sliding process of the bracket 504. During the sliding process of the bracket 504, the blade 509 is driven to move, so that the blade 509 slides over the top of the lower template 6, so that the overflowing scraps on the stationery shell are cut off, and as the bracket 504 moves, the slider 507 slides inside the straight groove 505 driven by the bracket 504. When the slider 507 slides into the rotating groove 506, the slider 507 slides into the rotating groove 506. Block 507 drives the bracket 504 to flip, so that the bracket 504 drives the lower template 6 to flip through the sliding frame 508, thereby demolding the stationery shell inside the lower template 6, and then continue to rotate the reciprocating screw rod 501 so that the reciprocating screw rod 501 drives the push plate 502 to slide in the opposite direction, thereby causing the bracket 504 to slide in the opposite direction. At this time, the slider 507 slides in the opposite direction inside the rotating groove 506, so that the slider 507 drives the bracket 504 to flip in the opposite direction, thereby causing the lower template 6 to flip in the opposite direction and reset. Then, as the slider 507 continues to slide, the slider 507 slides into the straight groove 505, and as the reciprocating screw rod 501 continues to rotate, the push plate 502 is reset.
[0032] When in use, the upper template 3 drives the push rod 402 as it slides up and down, thereby compressing and expanding the airbag 401, so that air is continuously sucked into the airbag 401 and then sprayed out from the nozzle 404, so that the dust and debris inside the upper template 3 and the lower template 6 are blown away, avoiding affecting the product quality in the subsequent production process, thereby ensuring the quality of the subsequent products. The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology.
[0033] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. A stationery plastic shell injection molding device, comprising a support plate (1), characterized in that: The side wall of the support plate (1) is fixedly connected to a plurality of guide rods (2), the outer walls of the plurality of guide rods (2) are slidably connected to an upper mold plate (3), the top end of the upper mold plate (3) is connected to a feed pipe (7), and the side wall of the upper mold plate (3) is fixedly connected to a dust removal mechanism (4); The dust removal mechanism (4) comprises an airbag (401), wherein the airbag (401) is fixedly connected to the top of the support plate (1), the top of the airbag (401) is fixedly connected to a push rod (402), the top of the push rod (402) is fixedly connected to the side wall of the upper template (3), the side wall of the airbag (401) is connected to two groups of air pipes (403), the end of each group of the air pipes (403) is respectively connected to a group of nozzles (404), the nozzles (404) are fixedly connected to the side wall of the support plate (1), the bottom end of the inner wall of the airbag (401) is provided with a plurality of groups of air inlet holes (405), the bottom end of the inner wall of the airbag (401) is hinged with a plurality of groups of flaps (406), and the position of each group of the flaps (406) corresponds to a group of air inlet holes (405).
2. The stationery plastic shell injection molding device according to claim 1, characterized in that: A trimming and blanking mechanism (5) is arranged inside the support plate (1), and the trimming and blanking mechanism comprises a reciprocating screw (501), and the reciprocating screw (501) is rotatably connected to the side wall of the support plate (1).
3. The stationery plastic shell injection molding device according to claim 2, characterized in that: The outer wall of the reciprocating screw rod (501) is threadedly connected to a push plate (502), the inner wall of the push plate (502) is slidably sleeved with a directional rod (503), the directional rod (503) is fixedly connected to the side wall of the support plate (1), the side wall of the push plate (502) is rotatably connected to a bracket (504), and the bracket (504) is slidably sleeved on the outer wall of the directional rod (503).
4. The stationery plastic shell injection molding device according to claim 3, characterized in that: A straight groove (505) is provided at the top of the directional rod (503), and a rotation groove (506) is provided at one end of the directional rod (503) away from the bracket (504), and the rotation groove (506) is connected to one end of the straight groove (505).
5. The stationery plastic shell injection molding device according to claim 3, characterized in that: The inner wall of the bracket (504) is fixedly connected with a slider (507), and the slider (507) extends to the inside of the straight groove (505). The top of the bracket (504) is slidably connected with two sets of sliding frames (508).
6. The stationery plastic shell injection molding device according to claim 5, characterized in that: The top ends of the two groups of sliding frames (508) are fixedly connected to a lower template (6), one side of the lower template (6) is rotatably connected to the outer wall of the directional rod (503) through a connecting piece, and the top end of the bracket (504) is fixedly connected to a blade (509).
7. The stationery plastic shell injection molding device according to claim 2, characterized in that: The end of the reciprocating screw rod (501) is fixedly connected to a turning handle extending to the outside of the support plate (1), and a rubber sleeve is fixedly provided on the outer wall of the turning handle.