Injection mold for producing sewage treatment pipe

[0017] Figure 1-4 Shown is the relevant explanatory diagram of the present invention; the specific embodiment is, as figure 1 , figure 2 , image 3 , Figure 4 As shown in the figure, an injection mold for producing sewage treatment pipes includes a central worm-driven gear de-threading mechanism, which includes a central threaded core 1, an inner edge ejecting a push tube 2, an auxiliary ejecting needle 3, and a de-threading mechanism. Material ejector 4, upper rotating sleeve 5, rotating sleeve fixing plate 6, threaded core gear 7, lower threaded sleeve 8, worm sleeve driving gear 9, gear key 10, lower bearing 11, ground cover 12, worm sleeve 13, Upper bearing 14, central drive worm 15.

[0018] The threaded core rotating assembly of the mechanism includes a central threaded core 1, an inner edge ejection push tube 2, an auxiliary ejection pin 3, a stripping ejector 4, an upper rotating sleeve 5, a rotating sleeve fixing plate 6, and a threaded core. Gear 7, lower threaded sleeve 8, worm sleeve drive gear 9; the central thread core 1 is the internal thread forming part of the product, the upper end of which is sleeved in the inner edge of the ejection push tube 2, and the lower end passes through the upper rotating sleeve 5 and the lower threaded sleeve 8 is installed on the mold base template of the mold; the inner edge ejection push tube 2 is a thin-walled annular formed part with an internal thread of the product, the upper end of which is sleeved in the core insert of the mold forming part, and the lower end is installed in the first ejection of the mold It plays the role of ejecting the thin-walled ring of the product; the auxiliary ejector pin 3 is installed on the first ejection plate of the mold, and plays the role of assisting the inner edge to eject the push tube 2; the ejector pin 4 It is sleeved on the center of the central thread core 1, and the lower end is installed on the second ejection plate of the application mold, which plays the role of cutting and ejecting the waste of the runner of the product; the upper rotating sleeve 5 is sleeved on the central thread core 1. on the upper end of the threaded core gear 7, and its outer end is fixedly installed on the template of the mold through the rotating sleeve fixing plate 6, so as to limit the upward movement of the threaded core gear 7; the threaded core gear 7 passes through The pin is fastened on the central threaded core 1, and is used to transmit the power of the worm sleeve drive gear 9 to the central threaded core 1; The outer end is installed on the mold template, which is used for the up and down movement guidance of the central thread core 1, and provides guidance for the smooth rotation of the central thread core 1; the thread core gear 7 and the worm sleeve drive gear 9 are geared.

[0019] The worm drive assembly of the mechanism includes a worm sleeve drive gear 9, a gear key 10, a lower bearing 11, a ground cover 12, a worm sleeve 13, an upper bearing 14, and a central drive worm 15; the worm sleeve drive gear 9 is sleeved on the worm sleeve 13. , and the twisting of the worm sleeve 13 is transmitted through the gear key 10; the upper end of the worm sleeve 13 is sleeved with a bearing 14, and the lower end is sleeved with a lower bearing 11. The sleeve 13 and the central driving worm 15 are installed in cooperation with the worm drive; the upper end of the central driving worm 15 is installed on the fixed mold side of the mold, and the worm sleeve 13 is installed on the movable mold side of the mold. The central driving worm 15 is used to drive the worm sleeve 13 to drive the worm sleeve to drive the gear 9, so as to achieve the purpose of driving the threaded core gear 7.

[0020] In the described mechanism, the threaded core rotating assembly is installed on the movable mold side of the applied object mold, and in the worm drive assembly, except for the central drive worm 15 installed on the fixed mold side, the other components are installed on the movable mold side of the mold. side.

[0021] In the mechanism, the threaded core rotating assembly corresponds to the forming and unthreading of one mold and one cavity of the product, and the worm drive assembly can meet the requirement of one drive for multiple. .

[0022] The use method of the central worm-driven gear de-threading mechanism includes the following steps:

[0023] In actual work, the organization's work process is divided into the following steps:

[0024] 1) The mold is opened at the PL parting surface, and the product is demolded from the cavity surface; during the opening process, the movable mold of the mold retreats, the worm sleeve (13) goes down, and the worm sleeve (13) is driven by the central worm (15) during the downward process. ) to rotate, thereby driving the worm sleeve drive gear (9) to rotate, the worm sleeve drive gear (9) drives the threaded core gear (7), the central thread core (1) to rotate, and the central thread core (1) is in the bottom Under the guidance of the threaded sleeve (8), the thread is matched and rotated, so that the threaded core at the upper end thereof is separated from the product.

[0025] 2) After the ejection and unthreading of the product is completed, the ejector rod of the injection molding machine drives the primary ejector plate and the secondary ejector plate to move up, thereby driving the inner edge to eject the ejector tube (2), the auxiliary ejector needle (3), and the ejector ejector. The rod (4) pushes out the product and runner waste from the core synchronously,

[0026] To achieve the purpose of completely demoulding the product.

[0027] The specific embodiments described herein are only for illustrating the spirit of the present invention, and those skilled in the art to which the present invention pertains can make various modifications or supplements to the specific embodiments described, or use similar ways to replace, but without departing from the spirit or scope of the invention as defined by the appended claims.