Edge and corner cutting positioning device for injection molding plastic product

Abstract

The utility model belongs to the technical field of plastic processing equipment, and particularly relates to an injection molding plastic product corner cutting positioning device which comprises a processing table, an open groove is formed in the surface of the processing table, a rotating seat is hinged to one end of the open groove, and a product positioning assembly is installed on the rotating seat. The product positioning assembly comprises a mounting groove and a sliding groove, and positioning plates with the same size are arranged in the mounting groove; the corresponding product positioning groove is selected according to the shape of a product, the positioning plate provided with the product positioning groove is placed in the mounting groove, then the product is placed in the product positioning groove for positioning, accurate positioning of different products is achieved by replacing the corresponding positioning plate, and after cutting is completed, the positioning plate is replaced by the corresponding positioning plate, so that the product can be accurately positioned. And the rotating seat is upwards rotated to incline, so that crushed aggregates generated by cutting can slide off, and the table surface does not need to be manually cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing equipment, in particular to a positioning device for cutting off the edges and corners of injection-molded plastic products. Background Technique

[0002] Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. Products with hollow structures such as bottles and tubes can all be blow-molded. According to the method of making the preform, blow molding can be divided into extrusion blow molding and injection blow molding. Newly developed ones include multi-layer blow molding and stretch blow molding.

[0003] Among the plastic accessories used in automobiles, there are many accessories with hollow structures. Blow molding can improve the production efficiency of the accessories. After blow molding, there are corner scraps around the product due to extrusion, also known as edge scraps. It is necessary to separate the edge scraps from the product to obtain plastic accessories suitable for use in automobiles. Currently, the methods for separating automotive plastic accessories and edge scraps are only limited to production workers using self-made trimming knives for cutting: after the product is formed, production workers need to hold a sharp enough pointed knife to make an opening along the parting line position on the edge of the product, and then manually tear the edge material apart with force; furthermore, in the case where the thickness of the parting line is uneven or the thickness is not enough to be torn by hand, the production worker must use a pointed knife to cut along the entire parting line of the product to achieve the effect of separating the edge material. In summary, although the edge material of the product is finally separated by the above operations, the product is at risk of being cut at any time, and holding a pointed knife for operation also poses a great hidden danger to the safety of production workers; the working time of this operation method is also unsatisfactory, typically time-consuming and laborious, with low work efficiency. At the same time, hard burrs are likely to be generated on the mold clamping edge of the product, affecting the appearance of the product and also affecting the safety of subsequent operations.

[0004] The existing Chinese patent with the publication number CN217168801U discloses a device for cutting off the edge scraps of automotive plastic accessories, including a fixed base. The fixed base is composed of two side plates, one back plate and two support plates. A swinging mechanism is provided on the top surface of the fixed base. The swinging mechanism includes a rotating shaft, a shaft sleeve, a swinging rod and a motor. A shaft sleeve is provided on the rotating shaft, a swinging rod is provided on the side wall of the rotating shaft, a motor is provided at one end of the rotating shaft, a plastic accessory fixing plate is provided on the swinging rod, a plastic accessory product hole is opened in the middle of the plastic accessory fixing plate, a fixing plate is provided on the end surface of the side plate, and an edge scrap cutting mechanism is provided on the fixing plate. The edge scrap cutting mechanism includes a positioning rod, a rotating shaft, a fixed rod, a cylinder, a blade fixing plate, a plastic accessory blade, a driving motor and a limiting rod.

[0005] In view of the above and existing related technologies, the inventor believes that the following defects often exist: during the actual use of the device, it is not able to effectively position plastic products, which will cause the problem of displacement of plastic products when cutting the corners of plastic products, and it is not able to reasonably ensure the quality of cutting the corners of plastic products, so improvement is needed; therefore, in view of the above problems, a positioning device for cutting the corners of injection-molded plastic products is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present utility model proposes a positioning device for cutting the corners of injection-molded plastic products.

[0007] The technical solution adopted by the present utility model to solve its technical problems is: a positioning device for cutting the corners of injection-molded plastic products according to the present utility model includes a processing table, a slot is opened on the surface of the processing table, a rotating seat is hinged at one end of the slot, a product positioning component is installed on the rotating seat, the product positioning component includes an installation slot and a sliding slot, a positioning plate of the same size is opened inside the installation slot, a product positioning slot consistent with the shape of the product is opened at the top of the positioning plate, and multiple types of positioning plates are provided according to the different shapes of the product positioning slots, the sliding slot is opened on one side of the top of the rotating seat, and baffles are symmetrically slidably connected inside the sliding slot, a top seat is installed above the processing table, and a cutting component is installed on the top seat. When in use, select the corresponding product positioning slot according to the shape of the product, place the positioning plate provided with the product positioning slot in the installation slot, and then place the product in the product positioning slot for positioning. By replacing the corresponding positioning plate, accurate positioning of different products can be achieved. After cutting is completed, rotate the rotating seat upward to generate an inclination, so that the cut scraps can slide down, eliminating the need for manual cleaning of the tabletop.

[0008] Preferably, a bidirectional lead screw is threadedly connected to the center of the sliding slot, and the bidirectional lead screw is threadedly connected to the two baffles. A collection box is placed on the connection side of the processing table and the rotating seat. By rotating the bidirectional lead screw to adjust the position of the baffles, the baffles are located on both sides of the product positioning slot, so that while fixing the positioning plate, the flow of debris can be guided by the baffles, and the scraps flow into the collection box.

[0009] Preferably, a through hole is opened at the bottom of the rotating seat, a U-shaped mounting seat is fixedly connected to the bottom of the through hole, an electric push rod is hinged to the inner side wall of the mounting seat, and the top end of the electric push rod is hinged to the rotating seat. After the corners of the product are cut off, the electric push rod operates to push the rotating seat to rotate to achieve automatic cleaning.

[0010] Preferably, the electric push rod passes through the through hole.

[0011] Preferably, hydraulic rods are fixedly connected to both sides of the top seat, and the driving ends of the hydraulic rods are fixedly connected to the processing table.

[0012] Preferably, the cutting assembly includes a blade seat. Symmetrically fixed to the top of the blade seat are threaded columns that penetrate through the top seat and are threadedly connected with fixing nuts. The blade seat is detachably installed below the top seat in a threaded connection manner, facilitating replacement.

[0013] Preferably, a cutting blade matching the contour of the product is fixedly connected to the bottom of the blade seat. There are multiple types of blade seats according to different cutting blades. The height of the cutting blade is higher than that of the baffle. Select the corresponding cutting blade according to the shape of the product, connect the blade seat provided with the cutting blade to the top seat, and then make the cutting blade move downward by contracting the hydraulic rod to accurately cut the corners of the product. By replacing the corresponding cutting blade, the removal of corners of different products is achieved.

[0014] Preferably, an opening is formed at the center of the blade seat.

[0015] Preferably, a convex cover protrudes upward at the center of the top seat. The cutting assembly further includes an adjusting lead screw that is threadedly installed at the center of the convex cover.

[0016] Preferably, a spring telescopic rod is fixedly connected to the bottom of the adjusting lead screw, and the bottom end of the spring telescopic rod is fixedly connected to a pressing plate. Through the cooperation of the spring telescopic rod and the pressing plate, when the top seat descends for shearing, the product is elastically pressed by the pressing plate to improve the stability during cutting, and to avoid indentations or cracks on the product caused by excessive pressure. Moreover, by rotating the adjusting lead screw, the relative height of the pressing plate can be adjusted, which is suitable for pressing products of various thicknesses.

[0017] The advantages of the present utility model are as follows:

[0018] 1. By selecting the corresponding product positioning groove according to the shape of the product, placing the positioning plate provided with the product positioning groove in the installation groove, and then placing the product in the product positioning groove for positioning, accurate positioning of different products is achieved by replacing the corresponding positioning plate. After cutting is completed, rotate the rotating seat upward to make it inclined, so that the cut scraps can slide off, eliminating the need for manual cleaning of the tabletop.

[0019] 2. The cutting blade of the present utility model moves downward to accurately cut the corners of the product. By replacing the corresponding cutting blade, the excision of the corners of different products can be achieved. Through the cooperation of the spring telescopic rod and the pressing plate, when the top seat descends for shearing, the product is elastically pressed by the pressing plate to improve the stability during cutting, and it is also avoided that the product is dented or cracked due to excessive pressure. Moreover, by rotating the adjusting screw rod, the relative height of the pressing plate can be adjusted, which is suitable for pressing products with various thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 For the present utility model Figure 1 is a bottom view;

[0023] Figure 3 is a schematic diagram of the structure of the product positioning component of the present utility model;

[0024] Figure 4 For the present utility model Figure 3 is a side view;

[0025] Figure 5 is an exploded view of the excision component of the present utility model.

[0026] In the figure: 1, processing table; 2, slot; 3, rotating seat; 4, product positioning component; 41, installation groove; 42, positioning plate; 43, product positioning groove; 44, sliding groove; 45, baffle; 46, bidirectional lead screw; 5, through hole; 6, mounting seat; 7, electric push rod; 8, top seat; 9, hydraulic rod; 10, excision component; 101, blade seat; 102, cutting blade; 103, opening; 105, adjusting screw rod; 106, spring telescopic rod; 107, pressing plate; 11, threaded post; 12, convex cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figures 1-4 As shown, a positioning device for cutting the corners of an injection-molded plastic product includes a processing table 1. A slot 2 is opened on the surface of the processing table 1. One end of the slot 2 is hinged with a rotating seat 3. A product positioning assembly 4 is installed on the rotating seat 3. The product positioning assembly 4 includes an installation slot 41 and a sliding slot 44. Positioning plates 42 of the same size are opened inside the installation slot 41. Product positioning slots 43 conforming to the shape of the product are opened on the top of the positioning plates 42, and multiple types of positioning plates 42 are provided according to the different shapes of the product positioning slots 43. The sliding slot 44 is opened on one side of the top of the rotating seat 3. Two baffles 45 are symmetrically slidably connected inside the sliding slot 44. A top seat 8 is installed above the processing table 1. A cutting assembly 10 is installed on the top seat 8. During use, the corresponding product positioning slot 43 is selected according to the shape of the product, and the positioning plate 42 provided with the product positioning slot 43 is placed in the installation slot 41. Subsequently, the product is placed in the product positioning slot 43 for positioning. By replacing the corresponding positioning plate 42, accurate positioning of different products is achieved. After cutting is completed, the rotating seat 3 is rotated upward to be inclined, so that the scraps generated by cutting can slide down without manual cleaning of the tabletop.

[0030] A bidirectional lead screw 46 is threadedly connected to the center of the sliding slot 44, and the bidirectional lead screw 46 is threadedly connected to the two baffles 45. A collection box is placed on the connection side between the processing table 1 and the rotating seat 3. By rotating the bidirectional lead screw 46 to adjust the positions of the baffles 45, the baffles 45 are located on both sides of the product positioning slot 43. Thus, while fixing the positioning plate 42, the flow of debris can be guided by the baffles 45, and the scraps flow into the collection box.

[0031] A through hole 5 is opened at the bottom of the rotating seat 3. A U-shaped mounting seat 6 is fixedly connected to the bottom of the through hole 5. An electric push rod 7 is hinged to the inner side wall of the mounting seat 6, and the top end of the electric push rod 7 is hinged to the rotating seat 3. After the corners of the product are cut off, the electric push rod 7 operates to push the rotating seat 3 to rotate for automatic cleaning.

[0032] The electric push rod 7 passes through the through hole 5.

[0033] Hydraulic rods 9 are respectively fixedly connected to both sides of the top seat 8, and the driving ends of the hydraulic rods 9 are fixedly connected to the processing table 1.

[0034] Embodiment 2

[0035] Comparing with Comparative Example 1, please refer to Figure 5 As shown, the present utility model provides another implementation manner. The cutting assembly 10 includes a blade seat 101. Symmetrically fixed to the top of the blade seat 101 are threaded columns 11. The threaded columns 11 penetrate through the top seat 8 and are threadedly connected with fixing nuts. The blade seat 101 is detachably installed below the top seat 8 in a threaded connection manner, which is convenient for replacement.

[0036] Fixed to the bottom of the blade seat 101 is a cutting blade 102 that matches the contour of the product. There are various types of blade seats 101 according to different settings of the cutting blade 102. The height of the cutting blade 102 is higher than that of the baffle 45. The corresponding cutting blade 102 is selected according to the shape of the product, and the blade seat 101 provided with the cutting blade 102 is connected to the top seat 8. Subsequently, the cutting blade 102 moves downward by the contraction of the hydraulic rod 9 to accurately cut the corners of the product. By replacing the corresponding cutting blade 102, the removal of the corners of different products is realized.

[0037] An opening 103 is provided at the center of the blade seat 101.

[0038] A convex cover 12 is formed by upward protrusion at the center of the top seat 8. The cutting assembly 10 further includes an adjusting lead screw 105, and the adjusting lead screw 105 is threadedly installed at the center of the convex cover 12.

[0039] Fixed to the bottom of the adjusting lead screw 105 is a spring telescopic rod 106, and the bottom end of the spring telescopic rod 106 is fixedly connected with a pressing plate 107. Through the cooperation of the spring telescopic rod 106 and the pressing plate 107, when the top seat 8 descends for shearing, the product is elastically pressed by the pressing plate 107 to improve the stability during cutting, and to avoid the product from being dented or cracked due to excessive pressure. Moreover, by rotating the adjusting lead screw 105, the relative height of the pressing plate 107 can be adjusted, which is suitable for pressing products of various thicknesses.

[0040] Those skilled in the art connect all the electrical components in this case to their adapted power supplies through wires, and should select a suitable controller and electrically connect it to the hydraulic rod 9 and the electric push rod 7 according to the actual situation to meet the control requirements. For the specific connection and control sequence, the electrical connection should be completed according to the sequence of the electrical components working successively in the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0041] Working principle: During use, select the corresponding product positioning groove 43 according to the shape of the product, place the positioning plate 42 provided with the product positioning groove 43 in the installation groove 41, and then place the product in the product positioning groove 43 for positioning. By replacing the corresponding positioning plate 42, accurate positioning of different products can be achieved. After cutting is completed, rotate the rotating seat 3 upward to produce an inclination, so that the cut scraps can slide off, eliminating the need for manual cleaning of the tabletop.

[0042] A collection box is placed on the connection side between the processing table 1 and the rotating seat 3. By rotating the bidirectional lead screw 46, the position of the baffle 45 is adjusted so that the baffle 45 is on both sides of the product positioning groove 43. Thus, while fixing the positioning plate 42, the baffle 45 can guide the flow of debris, causing the scraps to flow into the collection box.

[0043] Select the corresponding cutting blade 102 according to the shape of the product, connect the blade seat 101 provided with the cutting blade 102 to the top seat 8, and then make the cutting blade 102 move downward through the contraction of the hydraulic rod 9 to accurately cut the corners of the product. By replacing the corresponding cutting blade 102, the corners of different products can be cut off.

[0044] Through the cooperation of the spring telescopic rod 106 and the pressing plate 107, when the top seat 8 descends for shearing, the product is elastically pressed by the pressing plate 107 to improve the stability during cutting, and to avoid indentations or cracks on the product caused by excessive pressure. Moreover, by rotating the adjusting lead screw 105, the relative height of the pressing plate 107 can be adjusted to be suitable for pressing products of various thicknesses.

[0045] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0046] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A device for cutting and positioning the edges and corners of injection-molded plastic products, comprising a processing table (1), characterized in that: The surface of the processing table (1) is provided with a groove (2), one end of the groove (2) is hinged with a rotating seat (3), a product positioning component (4) is installed on the rotating seat (3), and the product positioning component (4) includes a mounting groove (41) and a slide groove (44), the interior of the mounting groove (41) is provided with a positioning plate (42) of the same size, the top of the positioning plate (42) is provided with a product positioning groove (43) consistent with the shape of the product, and the positioning plate (42) is provided with multiple types according to the different shapes of the product positioning groove (43), the slide groove (44) is provided on one side of the top of the rotating seat (3), and the interior of the slide groove (44) is symmetrically slidably connected with a baffle (45), a top seat (8) is installed above the processing table (1), and a cutting component (10) is installed on the top seat (8).

2. The device for cutting and positioning the corners of injection molded plastic products according to claim 1, characterized in that: A bidirectional lead screw (46) is threadedly connected at the center of the slide groove (44), and the bidirectional lead screw (46) is threadedly connected to two baffles (45).

3. The device for cutting and positioning the corners of injection molded plastic products according to claim 1, characterized in that: A through opening (5) is provided at the bottom of the rotating seat (3), a U-shaped mounting seat (6) is fixedly connected to the bottom of the through opening (5), an electric push rod (7) is hingedly connected to the inner side wall of the mounting seat (6), and the top end of the electric push rod (7) is hingedly connected to the rotating seat (3).

4. The device for cutting and positioning the corners of injection molded plastic products according to claim 3, characterized in that: The electric push rod (7) passes through the through opening (5).

5. The device for cutting and positioning the corners of injection molded plastic products according to claim 1, characterized in that: Hydraulic rods (9) are fixedly connected to both sides of the top seat (8), and the driving end of the hydraulic rod (9) is fixedly connected to the processing table (1).

6. The device for positioning the corner cut of injection molded plastic products according to claim 1, characterized in that: The cutting assembly (10) comprises a blade seat (101), the top of which is symmetrically fixedly connected with a threaded column (11), the threaded column (11) passing through the top seat (8) and being threadedly connected with a fixing nut.

7. The device for cutting and positioning the corners of injection molded plastic products according to claim 6, characterized in that: A cutting blade (102) matching the contour of the product is fixedly connected to the bottom of the blade seat (101); the blade seat (101) has a variety of configurations according to different cutting blades (102); and the height of the cutting blade (102) is higher than the baffle (45).

8. The device for cutting and positioning the corners of injection molded plastic products according to claim 7, characterized in that: An opening (103) is provided at the center of the blade seat (101).

9. The device for cutting and positioning corners of injection molded plastic products according to claim 6, characterized in that: The center of the top seat (8) protrudes upward to form a protruding cover (12), and the cutting assembly (10) also includes an adjusting screw (105), and the adjusting screw (105) is threadedly installed at the center of the protruding cover (12).

10. The device for cutting and positioning the corners of injection molded plastic products according to claim 9, characterized in that: The bottom of the adjusting screw (105) is fixedly connected to a spring telescopic rod (106), and the bottom end of the spring telescopic rod (106) is fixedly connected to a pressing plate (107).

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