Sliding block type ejection device for injection molding product

Abstract

The invention relates to the technical field of injection molding, in particular to a sliding block type ejection device for injection molding products, which comprises a mold plate, a mold core is embedded in the upper end of the mold plate, the upper end surface of the mold plate is sunken downwards to form a third groove, and the right end surface of the mold plate is sunken leftwards to form a mounting groove; the ejector plate is movably installed in the third groove, the upper end face of the ejector plate is sunken downwards to form a first groove, and the ejector plate is attached to the right end of the mold core; the lifting equipment is connected with the interior of the mounting groove, and the upper end of a movable part of the lifting equipment is connected with the lower end of the ejector plate; the sliding block is in sliding connection with the interior of the first groove; the top column is rotationally connected with the left end of the sliding block; the telescopic equipment is connected with the right end of the ejection plate, and a movable part of the telescopic equipment is connected with the right end of the sliding block; by means of the design, sliding block type ejection is conducted on an injection molding product, the probability that marks appear on the outer surface of the injection molding product due to ejector pin type ejection factors is effectively reduced, and the injection molding effect and quality are effectively guaranteed.

Description

Technical Field

[0001] This invention is a slider-type ejection device for injection molded products, belonging to the field of injection molding technology. Background Technology

[0002] Injection molding, as a core process in industrial product manufacturing, is mainly divided into two major areas: rubber injection molding and plastic injection molding. Depending on the molding method, it can be further subdivided into injection molding compression molding and die casting. Injection molding machines, as key equipment in this process, can efficiently produce various complex-shaped plastic products from thermoplastic or thermosetting materials using matching plastic molds.

[0003] This process, with its significant advantages of short production cycle and high degree of automation, has become the preferred choice for large-scale mass production. However, there are specific challenges in the production of cavity injection molded products. The plastic molds used for these products are mostly equipped with ejector pin-type ejection modules, but because cavity injection molded products have thin walls, marks and other phenomena are very likely to appear on the outer surface of the product during the ejection process, which in turn affects the appearance quality and molding effect of the injection molded product. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a slider-type ejection device for injection molded products.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A slider-type ejection device for injection molded products, comprising:

[0007] The template has a core embedded at its upper end, and a third groove is formed by the downward recess of the upper end of the template, which extends to the right end of the template. The third groove is located at the right end of the core. The mounting groove is formed by the left recess of the right end of the template, which extends to the lower end of the template. The mounting groove is connected to the lower end of the third groove.

[0008] An ejector plate is movably installed in the third groove. The upper surface of the ejector plate is recessed downward to form a first groove, and the first groove extends to the left end of the ejector plate. The ejector plate is attached to the right end of the core. The first groove and the fourth groove are arranged in communication.

[0009] A lifting device is connected to the mounting slot, and the upper end of the movable part of the lifting device is connected to the lower end of the top plate.

[0010] A slider is slidably connected to the first groove, and the slider has an L-shaped cross-section.

[0011] The top post is rotatably connected to the left end of the slider, and the top post extends into the core.

[0012] A telescopic device is connected to the right end of the top plate, and the movable part of the telescopic device is connected to the right end of the slider.

[0013] An auxiliary component is connected to the right end of the top column, and the auxiliary component is located inside the slider.

[0014] Furthermore, the upper end of the core is recessed downward to form a fourth groove, and the fourth groove extends to the right end of the core. A stop block is movably provided at the outer end of the top post, and the stop block is located in the fourth groove. The right end of the stop block is connected to the left end of the ejector plate.

[0015] Furthermore, guide blocks are installed on both the front and rear walls inside the fourth groove, and the two guide blocks are slidably connected to the front and rear ends of the stop block, respectively.

[0016] Furthermore, guide posts are provided at the four corner positions of the lower end of the ejector plate, and the guide posts are located outside the mounting groove. The lower ends of the four guide posts extend into the template, and the guide posts are slidably connected to the template.

[0017] Furthermore, the auxiliary component includes a circular cavity, the left end of the slider is recessed to the right to form a circular cavity, the right end of the top post extends into the circular cavity and is rotatably connected to the slider, the left end of the slider is recessed to the right to form a second groove and the second groove is connected to the lower front end of the circular cavity, a drive assembly is installed on the outer end of the top post and the drive assembly is located in the circular cavity and extends into the second groove, and the drive assembly is connected to the right end of the stop block.

[0018] Furthermore, the drive assembly includes an annular worm gear and a worm. The annular worm gear is installed on the outer end of the top column and is located in the circular cavity. The lower end of the annular worm gear meshes with the worm. The worm is rotatably connected in the circular cavity and extends into the second groove. A gear is provided at the outer end of the worm and is located in the second groove. The lower end of the gear meshes with a rack, and the rack is slidably connected in the second groove. The left end of the rack is connected to the right end of the stop block.

[0019] Furthermore, two guide plates are installed on both the front and rear walls inside the first groove, and the two guide plates are slidably connected to the front and rear ends of the slider, respectively.

[0020] The beneficial effects of this invention are:

[0021] The second hydraulic cylinder drives the ejector plate, stop, slider and other components to move upward, thereby ejecting the injection molded product from the mold cavity of the core. Then, the first hydraulic cylinder drives the slider and ejector pin to move to the right, while the stop blocks the injection molded product, thereby separating the injection molded product from the ejector pin. This achieves slider-type ejection of the injection molded product, effectively reducing the probability of marks on the outer surface of the injection molded product caused by ejector pin ejection, and effectively ensuring the injection molding effect and quality. Attached Figure Description

[0022] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the structure of a slider-type ejection device for injection molded products according to the present invention;

[0024] Figure 2 This is a perspective view of a slider-type ejection device for injection molded products according to the present invention;

[0025] Figure 3 This is a cross-sectional view of a slider ejection device for injection molded products according to the present invention;

[0026] Figure 4 for Figure 3 Enlarged view of section A in the middle;

[0027] Figure 5 This is a perspective view of the ejector plate in a slider-type ejector device for injection molded products according to the present invention;

[0028] Figure 6 This is an assembly diagram of the first hydraulic cylinder and the slider in a slider-type ejection device for injection molded products according to the present invention;

[0029] Figure 7 This is a cross-sectional view of the slider in a slider-type ejection device for injection molded products according to the present invention.

[0030] Figure 8 This is a perspective view of the stop block in a slider-type ejection device for injection molded products according to the present invention.

[0031] In the diagram: 1. Template, 11. Mounting groove, 2. Core, 3. Ejector plate, 31. First groove, 32. Guide plate, 33. Guide post, 4. First hydraulic cylinder, 5. Slider, 51. Circular cavity, 52. Second groove;

[0032] 6. Stop block; 61. Guide block; 7. Second hydraulic cylinder; 8. Top column; 81. Annular worm gear; 82. Worm; 83. Rack; 84. Gear. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] Example 1: As Figures 1-8As shown, a slider-type ejection device for injection molded products is provided, including: a template 1, a core 2 embedded in the upper end of the template 1, through which the core 2 is used for injection molding into a product, a third groove extending to the right end of the template 1 and located at the right end of the core 2 is recessed downward on the upper end of the template 1, through the third groove to provide installation space for an ejector plate 3, and a mounting groove 11 extending to the lower end of the template 1 and connected to the lower end of the third groove is recessed to the left on the right end of the template 1, through the mounting groove 11 to provide installation space for a lifting device;

[0035] The ejector plate 3, which is attached to the right end of the core 2, is movably installed in the third groove. The ejector plate 3 provides a mounting carrier for the telescopic device. The upper surface of the ejector plate 3 is recessed downward to form a first groove 31 that extends to the left end of the ejector plate 3 and is connected to the fourth groove. The first groove 31 provides installation space for the slider 5. Four guide posts 33 located outside the mounting groove 11, with their lower ends extending into the template 1 and slidably connected to the template 1, are respectively set at the four corner positions of the lower end of the ejector plate 3. The four guide posts 33 work together to guide the movement of the ejector plate 3.

[0036] The fixed part of the lifting device, which connects the upper end of the movable part to the lower end of the ejector plate 3, is installed in the mounting groove 11. The lifting device drives the ejector plate 3 to move up and down. The lifting device can be a second hydraulic cylinder 7. The slider 5, which has an L-shaped cross section, is slidably connected in the first groove 31. The slider 5 provides a mounting carrier for components such as the top column 8. Then, two guide plates 32, which are slidably connected to the front and rear ends of the slider 5, are respectively installed on the front and rear walls inside the first groove 31. The two guide plates 32 work together to guide the movement of the slider 5.

[0037] The top post 8, which extends into the core 2, is rotatably connected to the left end of the slider 5. The top post 8 is used for both forming the inner cavity of the product and ejecting the product. The fixed part of the telescopic device, which is connected to the right end of the slider 5, is installed on the right end of the ejection plate 3. The telescopic device drives the slider 5 to move left and right. The telescopic device can be a first hydraulic cylinder 4.

[0038] A fourth groove is formed by recessing the upper surface of the core 2 downwards and extending to the right end of the core 2. The fourth groove provides installation space for the stop block 6. The stop block 6, which is located in the fourth groove and whose right end is connected to the left end of the ejector plate 3, is movably mounted on the outer end of the ejector post 8. The stop block 6 is used to prevent the injection molded product from shifting. Two guide blocks 61, which are slidably connected to the front and rear ends of the stop block 6, are respectively installed on the front and rear walls inside the fourth groove. The two guide blocks 61 work together to guide the movement of the stop block 6.

[0039] In operation, the core 2 is first used for injection molding to form the injection molded product. At this time, the ejector pin 8 is located inside the injection molded product. Then, the mold plate 1 is opened, and the second hydraulic cylinder 7 is activated to drive the ejector plate 3 to move upward, thereby causing the stop block 6, slider 5 and other components to move upward, thus ejecting the injection molded product from the mold cavity of the core 2. Then, the first hydraulic cylinder 4 is activated to drive the slider 5 to move to the right, thereby causing the ejector pin 8 to move to the right. At the same time, the stop block 6 blocks the injection molded product, thereby separating the injection molded product from the ejector pin 8. Then, the injection molded product is taken out, realizing the ejection of the injection molded product by slider 5, which effectively reduces the probability of marks on the outer surface of the injection molded product caused by ejector pin ejection, and effectively ensures the injection molding effect and quality.

[0040] Example 2: Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, a circular cavity 51 is formed by a rightward indentation on the left end of the slider 5, and the right end of the top post 8, which is rotatably connected to the slider 5, extends into the circular cavity 51. The circular cavity 51 provides installation space for components such as the annular worm gear 81. A second groove 52, which is connected to the lower front end of the circular cavity 51, is formed by a rightward indentation on the left end of the slider 5. The second groove 52 provides installation space for the rack 83. The annular worm gear 81 located in the circular cavity 51 is installed on the outer end of the top post 8, and the top post 8 is rotated by the annular worm gear 81.

[0041] The worm 82, which extends into the second groove 52 and is rotatably connected to the circular cavity 51, is engaged with the lower end of the annular worm wheel 81. The annular worm wheel 81 is rotated by the worm 82. The gear 84, located in the second groove 52, is placed on the outer end of the worm 82. The worm 82 is rotated by the gear 84. The rack 83, which is slidably connected in the second groove 52 and whose left end is connected to the right end of the stop block 6, is engaged with the lower end of the gear 84. The gear 84 is rotated by the rack 83.

[0042] In use, the core 2 is first used for injection molding to form an injection molded product. At this time, the ejector pin 8 is located inside the injection molded product. Then, the mold plate 1 is opened. Then, the second hydraulic cylinder 7 is used to make the ejector plate 3, the stop block 6, the slider 5 and other components move upward, thereby ejecting the injection molded product from the mold cavity of the core 2. Then, the first hydraulic cylinder 4 drives the slider 5 and the ejector pin 8 to move to the right. With the assistance of the stop block 6, the injection molded product is separated from the ejector pin 8. Then, the injection molded product is taken out.

[0043] During the movement of slider 5 to the right, the rack 83 and the second groove 52 will move relative to each other. Since the rack 83 and gear 84 mesh with each other, the movement of rack 83 will cause gear 84 to rotate, which in turn will cause worm 82 to rotate. Since worm 82 and annular worm wheel 81 mesh with each other, the rotation of worm 82 will cause annular worm wheel 81 to rotate, which in turn will cause ejector pin 8 to rotate. This achieves the simultaneous movement of ejector pin 8 to the right and rotation, effectively reducing the probability of damage to injection molded products due to factors such as adhesion between ejector pin 8 and injection molded products, and effectively ensuring injection molding effect and quality.

[0044] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A slider-type ejection device for injection molded products, characterized in that, include: Template (1), the upper end of the template (1) is inlaid with a core (2), the upper end of the template (1) is recessed downward to form a third groove, and the third groove extends to the right end of the template (1), the third groove is located at the right end of the core (2), the right end of the template (1) is recessed to the left to form an installation groove (11), and the installation groove (11) extends to the lower end of the template (1), the installation groove (11) is connected to the lower end of the third groove; The ejector plate (3) is movably installed in the third groove. The upper end of the ejector plate (3) is recessed downward to form a first groove (31), and the first groove (31) extends to the left end of the ejector plate (3). The ejector plate (3) is attached to the right end of the core (2). The first groove (31) is connected to the fourth groove. The lifting device is connected to the mounting groove (11), and the upper end of the movable part of the lifting device is connected to the lower end of the top plate (3); The slider (5) is slidably connected to the first groove (31), and the cross-section of the slider (5) is L-shaped; The top post (8) is rotatably connected to the left end of the slider (5), and the top post (8) extends into the core (2); The telescopic device is connected to the right end of the top plate (3), and the movable part of the telescopic device is connected to the right end of the slider (5); An auxiliary component is connected to the right end of the top column (8), and the auxiliary component is located inside the slider (5).

2. The slider ejection device for injection molded products according to claim 1, characterized in that: The upper end of the core (2) is recessed downward to form a fourth groove, and the fourth groove extends to the right end of the core (2). The outer end of the top post (8) is movably provided with a stop block (6), and the stop block (6) is located in the fourth groove. The right end of the stop block (6) is connected to the left end of the ejector plate (3).

3. The slider ejection device for injection molded products according to claim 2, characterized in that: Guide blocks (61) are installed on both the front and rear walls inside the fourth groove, and the two guide blocks (61) are slidably connected to the front and rear ends of the stop block (6).

4. The slider ejection device for injection molded products according to claim 1, characterized in that: The top plate (3) is provided with guide posts (33) at the four corners of its lower end, and the guide posts (33) are located outside the mounting groove (11). The lower ends of the four guide posts (33) extend into the template (1), and the guide posts (33) are slidably connected to the template (1).

5. The slider ejection device for injection molded products according to claim 2, characterized in that: The auxiliary component includes a circular cavity (51). The left end of the slider (5) is recessed to the right to form a circular cavity (51). The right end of the top post (8) extends into the circular cavity (51), and the top post (8) is rotatably connected to the slider (5). The left end of the slider (5) is recessed to the right to form a second groove (52), and the second groove (52) is connected to the lower front end of the circular cavity (51). A drive assembly is installed on the outer end of the top post (8), and the drive assembly is located in the circular cavity (51) and extends into the second groove (52). The drive assembly is connected to the right end of the stop block (6).

6. The slider ejection device for injection molded products according to claim 5, characterized in that: The drive assembly includes an annular worm gear (81) and a worm (82). The annular worm gear (81) is installed on the outer end of the top column (8) and is located in the circular cavity (51). The lower end of the annular worm gear (81) meshes with the worm (82). The worm (82) is rotatably connected in the circular cavity (51) and extends into the second groove (52). A gear (84) is provided on the outer end of the worm (82) and is located in the second groove (52). The lower end of the gear (84) meshes with a rack (83) and is slidably connected in the second groove (52). The left end of the rack (83) is connected to the right end of the stop block (6).

7. The slider ejection device for injection molded products according to claim 1, characterized in that: Two guide plates (32) are installed on the front and rear walls inside the first groove (31), and the two guide plates (32) are slidably connected to the front and rear ends of the slider (5).

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