Columnar product injection mold convenient to demold

Abstract

The utility model relates to a columnar product injection mold convenient to demold. The columnar product injection mold comprises a lower mold, an upper mold and a driving mechanism, a plurality of forming stations are arranged on the lower die; a runner is arranged on the lower die; forming columns are vertically arranged on the forming station, and an internal thread forming body is rotationally arranged in the lower die and located under each forming column; the lower part of the forming column body is inserted into the top of the internal thread forming body; the upper mold covers the lower mold, and an injection molding opening is formed in the upper mold; the driving mechanism comprises an oil cylinder, a rack and a plurality of gears; the plurality of gears are fixedly sleeved at the bottoms of the plurality of internal thread forming bodies respectively; the oil cylinder is arranged on one side of the lower die, the rack is slidably arranged in the lower die, and the oil cylinder is used for driving the rack to slide; and the plurality of gears are engaged with the rack. After an injection molding product is formed, the product can be quickly separated from the mold.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding processing, in particular to a mold for injection molding of columnar products which is convenient for demoulding. Background Art

[0002] The mold industry is in a stage of rapid development, among which injection molds are a processing tool used in mass production of certain parts with complex shapes.

[0003] like Figure 1 As shown, it is a columnar plastic product, the inner wall of which has an internal thread at the bottom, which needs to be formed during injection molding. However, after injection molding, the product is difficult to demold due to the internal thread formed at the bottom of the inner wall. The above situation seriously affects the production efficiency of the injection molded parts. Utility Model Content

[0004] The utility model aims to provide a mold for injection molding of a columnar product which is convenient for demoulding, and after the injection molding product is formed, the product and the mold can be quickly separated.

[0005] In order to achieve the purpose of the above utility model, a mold for injection molding of columnar products with convenient demoulding is provided, comprising a lower mold, an upper mold and a driving mechanism;

[0006] The lower mold is provided with a plurality of molding stations, and the plurality of molding stations are arranged side by side along the length direction of the lower mold;

[0007] The lower mold is provided with a flow channel, and the flow channel is connected with a plurality of the molding stations;

[0008] The molding station is vertically provided with a molding column, and the lower mold is rotatably provided with an internal thread molding body directly below each molding column;

[0009] The lower part of the molding column is inserted into the top of the internal thread molding body;

[0010] The upper mold is covered on the lower mold, and the upper mold is provided with an injection port, and the injection port is connected with the flow channel on the lower mold;

[0011] The driving mechanism includes an oil cylinder, a rack and a plurality of gears;

[0012] The number of the gears is equal to the number of the forming cylinders;

[0013] The plurality of gears are respectively sleeved and fixed on the bottoms of the plurality of internal thread forming bodies;

[0014] The oil cylinder is arranged on one side of the lower die, the rack is slidably arranged in the lower die and arranged along the length direction of the lower die, and the oil cylinder is used to drive the rack to slide;

[0015] The plurality of gears are all meshed with the rack.

[0016] Specifically, the number of the forming stations is 4.

[0017] Preferably, a bracket is fixed on one side of the lower mold, the oil cylinder is arranged on the bracket, a plurality of guide columns are provided on the bracket, a same slider is slidably sleeved on the plurality of guide columns, and one end of the rack is fixed on the slider.

[0018] The utility model is a convenient demoulding columnar product injection molding mold has the following advantages compared with the prior art:

[0019] (1) By arranging a driving mechanism on the lower mold, after the product is injection molded, the internal thread molded body is driven by meshing of the rack and the gear on the driving mechanism, so that the product and the internal thread molded body can be quickly separated, thereby improving the production efficiency of the product;

[0020] (2) Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a mold for injection molding of a columnar product that is easy to demould in this embodiment;

[0022] Figure 2 Schematic diagram of the structure of the lower mold in this embodiment;

[0023] Figure 3 Schematic diagram of the internal structure of the lower mold in this embodiment;

[0024] Figure 4 It is an exploded view of the molding column and the internal thread molding body in this embodiment. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figure 1 As shown, a mold for injection molding of a columnar product with convenient demoulding in this embodiment includes a lower mold 1, an upper mold 2 and a driving mechanism.

[0027] like Figure 2 As shown, the lower mold 1 is provided with a plurality of molding stations 3, and the plurality of molding stations 3 are arranged side by side along the length direction of the lower mold 1; the lower mold 1 is provided with a flow channel 4, and the flow channel 4 is connected with the plurality of molding stations 3; a molding column 5 is vertically provided on the molding station 3, and an internal thread molding body 6 is rotatably provided in the lower mold 1 directly below each molding column 5; Figure 4As shown, the lower part of the molding column 5 is plugged into the top of the internal thread molding body 6. In this embodiment, the number of the molding stations 3 is four.

[0028] The upper mold 2 covers the lower mold 1 . The upper mold 2 has an injection port 7 . The injection port 7 is connected to the flow channel 4 on the lower mold 1 .

[0029] like Figure 3 As shown, the driving mechanism includes a cylinder 8, a rack 9 and a plurality of gears 10; the number of the gears 10 is equal to the number of the forming columns 5; the plurality of gears 10 are respectively sleeved and fixed on the bottom of the plurality of internal thread forming bodies 6; the cylinder 8 is arranged on one side of the lower mold 1, the rack 9 is slidably arranged in the lower mold 1, and is arranged along the length direction of the lower mold 1, and the cylinder 8 is used to drive the rack 9 to slide; the plurality of gears 10 are all meshed with the rack 9.

[0030] With such arrangement, after the product is injection molded, the upper mold 2 is opened and then the oil cylinder 8 is started, so that the rack 9 moves linearly in the lower mold 1. Since the gear 10 at the bottom of the internal thread molding body 6 is meshed with the rack 9, the internal thread molding body 6 rotates, thereby causing the molded product to detach from the internal thread molding body 6, and then an external robot can remove the product.

[0031] In this embodiment, if Figure 1 As shown, a bracket 11 is fixed to one side of the lower mold 1, the oil cylinder 8 is arranged on the bracket 11, a plurality of guide columns 12 are provided on the bracket 11, and a same slider 13 is slidably sleeved on the plurality of guide columns 12; one end of the rack 9 is fixed to the slider 13; such an arrangement can effectively ensure the linearity of the movement direction of the rack 9 and prevent it from deviation.

[0032] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A mold for injection molding of columnar products that is easy to demould, characterized in that: It includes a lower die, an upper die and a driving mechanism; The lower mold is provided with a plurality of molding stations, and the plurality of molding stations are arranged side by side along the length direction of the lower mold; The lower mold is provided with a flow channel, and the flow channel is connected with a plurality of the molding stations; The molding station is vertically provided with a molding column, and the lower mold is rotatably provided with an internal thread molding body directly below each molding column; The lower part of the molding column is inserted into the top of the internal thread molding body; The upper mold is covered on the lower mold, and the upper mold is provided with an injection port, and the injection port is connected with the flow channel on the lower mold; The driving mechanism includes an oil cylinder, a rack and a plurality of gears; The number of the gears is equal to the number of the forming cylinders; The plurality of gears are respectively sleeved and fixed on the bottoms of the plurality of internal thread forming bodies; The oil cylinder is arranged on one side of the lower die, the rack is slidably arranged in the lower die and arranged along the length direction of the lower die, and the oil cylinder is used to drive the rack to slide; The plurality of gears are all meshed with the rack.

2. A convenient demoulding columnar product injection mold according to claim 1, characterized in that: The number of the molding stations is 4.

3. A convenient demoulding columnar product injection mold as claimed in claim 1 or 2, characterized in that: A bracket is fixed on one side of the lower die, the oil cylinder is arranged on the bracket, a plurality of guide columns are arranged on the bracket, a same slide block is slidably sleeved on a plurality of the guide columns, and one end of the rack is fixed on the slide block.

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