Multi-cavity integrated injection mold

Abstract

The utility model discloses a multi-cavity integrated injection mold which comprises a main body mechanism and an ejection mechanism, the main body mechanism comprises a lower die, a plurality of supporting columns fixed to the outer side of the lower die in an annular array mode, an upper die assembly movably arranged on the supporting columns in a sleeving mode, a water inlet piece installed at the bottom end of the lower die, an annular hollow pipe fixed to the outer side face of the lower die and a water drainage pipe with the end communicating with the annular hollow pipe, and forming grooves are formed in the top end of the lower die in an annular array mode. Meanwhile, vertical flow channels are formed in the positions, located on the two sides of each forming groove, of the inner cavity of the lower die in an array mode, cooling water passes through the vertical flow channels and exchanges heat with heat in the lower die, the heat in the lower die is taken away, the lower die is cooled, namely, products in the forming grooves are cooled, and transverse flow channels are arranged at the top ends of the vertical flow channels in the array mode and extend out of the lower die; the multi-cavity integrated injection mold has the advantages that the cooling effect is good, and a product is convenient to demold.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically a multi-cavity integrated injection mold. Background Technology

[0002] Injection molding is a processing method used for mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure by an injection molding machine. After cooling and solidification, the molded product is obtained. In order to improve production efficiency and save mold costs, multiple injection cavities are opened on a mold during the injection molding process, and multiple products are injection molded at one time, thereby effectively improving injection molding efficiency.

[0003] However, existing multi-cavity injection molds have the following drawbacks during use: after injection molding, it is difficult to ensure that the product in each cavity can cool at the same speed, resulting in different cooling effects for the product in each cavity, which affects the injection molding quality. At the same time, the product is difficult to remove from the mold after injection molding. Therefore, there is room for improvement. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a multi-cavity integrated injection mold, including: a main body mechanism and an ejection mechanism. The main body mechanism includes a lower mold, a plurality of support columns fixed in a ring array on the outside of the lower mold, an upper mold assembly movably sleeved on the support columns, a water inlet installed at the bottom of the lower mold, an annular hollow pipe fixed on the outer surface of the lower mold, and a drain pipe whose end is connected to the annular hollow pipe.

[0006] The top of the lower mold has a ring array of forming grooves. Vertical flow channels are arrayed on both sides of each forming groove in the inner cavity of the lower mold. A transverse flow channel extends out of the lower mold from the top of the array of vertical flow channels. The bottom of the vertical flow channel is connected to the water inlet, and the end of the transverse flow channel is connected to the annular hollow pipe.

[0007] The ejection mechanism includes multiple ejector components disposed in the forming groove and extending downwards out of the lower mold, and a drive component movably disposed in the inner cavity of the support column and fixedly connected to the ejector components at its bottom end.

[0008] The driving component includes a T-shaped rod movably disposed in the inner cavity of the support column, a connecting rod with one end fixed to the bottom end of the T-shaped rod and the other end extending out of the support seat and fixed to the ejector, a spring sleeved on the T-shaped rod, and a protrusion fixed to the top end of the T-shaped rod and extending out of the support column.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the water inlet includes a central shell fixed to the bottom end of the lower mold, a plurality of branch pipes fixed to the outside of the central shell and communicating with the inner cavity of the central shell, and a water inlet pipe whose end is connected to the central shell, and the bottom end of the vertical flow channel is connected to the branch pipe.

[0010] In a preferred embodiment, the present invention can be further configured such that the upper mold assembly includes a sleeve movably fitted outside the support column and an upper mold body disposed above the lower mold and fixedly connected to the sleeve.

[0011] In a preferred embodiment, the present invention can be further configured such that the ejector includes a top plate fitted into the bottom wall of the forming groove, a support rod fixed to the bottom end of the top plate and extending downwards into the lower mold, and an annular plate connecting multiple support rods.

[0012] In a preferred embodiment, the present invention can be further configured such that one end of the connecting rod is fixedly connected to the annular plate, and the other end is fixedly connected to the bottom end of the T-shaped rod.

[0013] In a preferred embodiment, the present invention can be further configured such that: the support column has a T-shaped groove inside, one end of the spring is fixed to the bottom end of the T-shaped rod, and the other end is fixed to the inner wall of the T-shaped groove.

[0014] In a preferred embodiment, the present invention can be further configured such that the protrusion is located above the sleeve.

[0015] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0016] 1. In this utility model, the molding grooves at the top of the lower mold are arranged in a ring array, and vertical flow channels are arrayed on both sides of each molding groove in the inner cavity of the lower mold. A transverse flow channel extends out of the lower mold from the top of the array of vertical flow channels. A water inlet is installed at the bottom of the lower mold and is connected to each vertical flow channel. At the same time, an annular hollow pipe is set on the outer surface of the lower mold and is connected to each transverse flow channel. A drain pipe is set on the annular hollow pipe. With the above arrangement, after the product is injection molded, cooling water enters all the vertical flow channels simultaneously through the water inlet to exchange heat in the lower mold, thereby cooling the lower mold and the product in the molding groove. Then, the cooling water enters the annular hollow pipe through the transverse flow channel and is discharged through the drain pipe, forming a circulation. This ensures that the products in each molding groove are cooled simultaneously, with high cooling efficiency and effect, avoiding product quality differences caused by different cooling rates in different mold cavities.

[0017] 2. In this utility model, an ejector extending downward from the lower mold is provided in each molding groove, and a driving component is provided inside the support column. The driving component consists of a T-shaped rod, a connecting rod, a spring, and a protrusion. With the above arrangement, after injection molding is completed, the upper mold assembly moves upward, driving the protrusion to move upward. The upward movement of the protrusion drives the T-shaped rod to move upward, and the upward movement of the T-shaped rod drives the ejector to move upward through the connecting rod. This allows the products in multiple molding grooves to be ejected simultaneously, completing the demolding of the injection molded products. This makes it convenient for workers to pick up the products and effectively increases the demolding efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the lower mold structure of this utility model from a bottom view;

[0021] Figure 4 These are side and top sectional views of the lower mold of this utility model;

[0022] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 6 This is a schematic diagram of the ejection mechanism of this utility model.

[0024] Figure label:

[0025] 100. Main structure; 110. Lower mold; 111. Forming groove; 112. Vertical runner; 113. Horizontal runner; 120. Support column; 121. T-shaped cylindrical groove; 130. Upper mold assembly; 131. Sleeve; 132. Upper mold body; 140. Water inlet; 141. Central shell; 142. Branch pipe; 143. Water inlet pipe; 150. Annular hollow pipe; 160. Drain pipe;

[0026] 200. Ejection mechanism; 210. Ejector component; 211. Top plate; 212. Support rod; 213. Annular plate; 220. Drive component; 221. T-shaped rod; 222. Connecting rod; 223. Spring; 224. Protrusion. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] Some embodiments of this utility model are described below with reference to the accompanying drawings.

[0029] Example 1:

[0030] Combination Figure 1-6 As shown, this embodiment provides a multi-cavity integrated injection mold, including: a main body mechanism 100 and an ejection mechanism 200.

[0031] The main structure 100 includes a lower mold 110, multiple support columns 120 arranged in a ring array and fixed on the outside of the lower mold 110, an upper mold assembly 130 movably sleeved on the support columns 120, a water inlet 140 installed at the bottom of the lower mold 110, an annular hollow pipe 150 fixed on the outer surface of the lower mold 110, and a drain pipe 160 whose end is connected to the annular hollow pipe 150.

[0032] Forming grooves 111 are arranged in a ring at the top of the lower mold 110. At the same time, vertical flow channels 112 are arranged in an array on both sides of each forming groove 111 in the inner cavity of the lower mold 110 for cooling water to pass through, exchange heat with the heat in the lower mold 110, remove the heat from the lower mold 110, and cool the lower mold 110, that is, cool the product in the forming grooves 111. A transverse flow channel 113 is provided at the top of the array of vertical flow channels 112, extending out of the lower mold 110. The transverse flow channel 113 is connected to the inner cavity of the annular hollow tube 150 and is used to send the cooling water that has absorbed heat in the vertical flow channels 112 into the annular hollow tube 150. The drain pipe 160 is used to discharge the cooling water in the annular hollow tube 150.

[0033] The water inlet 140 is used to simultaneously deliver water into all the vertical flow channels 112. It includes a central shell 141 fixed at the bottom of the lower mold 110, multiple branch pipes 142 fixed on the outside of the central shell 141 and communicating with the inner cavity of the central shell 141, and a water inlet pipe 143 whose end is connected to the central shell 141. The central shell 141 is used to install the branch pipes 142 and simultaneously and evenly deliver cooling water into the branch pipes 142. The bottom end of the vertical flow channel 112 is connected to the branch pipes 142 to facilitate the entry of cooling water in the branch pipes 142 into the vertical flow channel 112. The water inlet pipe 143 is connected to a water pump and is used to deliver cooling water into the central shell 141.

[0034] The ejection mechanism 200 is used to eject the product from the molding groove 111 for easy handling by workers. It includes multiple ejector parts 210 that are disposed in the molding groove 111 and extend downward from the lower mold 110, and a drive part 220 that is movably disposed in the cavity of the support column 120 and whose bottom end is fixedly connected to the ejector parts 210.

[0035] The ejector 210 includes a top plate 211 fitted into the bottom wall of the molding groove 111, a support rod 212 fixed to the bottom end of the top plate 211 and extending downward into the lower mold 110, and an annular plate 213 connecting multiple support rods 212. When the annular plate 213 moves upward, it drives multiple support rods 212 to move upward synchronously. The upward movement of the support rods 212 drives the top plate 211 to move upward, ejecting the product in the molding groove 111 upward.

[0036] The driving component 220 is used to drive the ejector component 210 to move upward. It includes a T-shaped rod 221 movably disposed within the cavity of the support column 120; a connecting rod 222, one end of which is fixed to the bottom end of the T-shaped rod 221, and the other end extending out of the support seat and fixed to the ejector component 210; a spring 223 sleeved on the T-shaped rod 221; and a protrusion 224 fixed to the top end of the T-shaped rod 221 and extending out of the support column 120. A T-shaped cylindrical groove 121 is formed inside the support column 120, and the T-shaped rod 221 is fitted into the T-shaped cylindrical groove 121. One end of the connecting rod 222 is fixedly connected to an annular plate 213, and the other end is fixedly connected to the bottom end of the T-shaped rod 221, causing the T-shaped rod 221 to move upward. During the movement, the ejector 210 is moved upward synchronously via the connecting rod 222. One end of the spring 223 is fixed to the bottom end of the T-shaped rod 221, and the other end is fixed to the inner wall of the T-shaped groove 121. During injection molding, the bottom end of the T-shaped rod 221 is pressed down, which in turn causes the ejector 210 to be pressed down, so that the top surface of the top plate 211 is flush with the inner bottom wall of the molding groove 111. The protrusion 224 is located above the sleeve 131, so that after the sleeve 131 moves upward a certain distance with the upper mold body 132, it can synchronously drive the protrusion 224 to move upward. The upward movement of the protrusion 224 drives the T-shaped rod 221 to move upward, which in turn drives the ejector 210 to move upward via the connecting rod 222.

[0037] The working principle and usage process of this utility model are as follows: During use, the upper mold body 132 moves down and fits against the lower mold 110, completing the mold closing and starting the injection molding of the product. After injection molding, cooling water is sent into the central shell 141 through the water inlet pipe 143. Subsequently, the cooling water simultaneously enters the inner cavities of multiple branch pipes 142 through the central shell 141. As the cooling water is continuously injected, the cooling water level in the inner cavities of the branch pipes 142 rises and enters the vertical flow channel 112. The cooling water enters the vertical flow channel 112 and exchanges heat with the heat in the lower mold 110, thereby cooling the lower mold 110. Cooling involves cooling the product in the molding tank 111. Cooling water then enters the annular hollow pipe 150 through the transverse flow channel 113 and is discharged through the drain pipe 160, forming a circulation. After cooling is completed, the upper mold assembly 130 moves upward and contacts the protrusion 224 after moving a certain distance. The protrusion 224 then moves upward synchronously, which in turn moves the T-shaped rod 221 upward. The upward movement of the T-shaped rod 221 drives the ejector 210 upward through the connecting rod 222, thereby ejecting the products in multiple molding tanks 111 simultaneously and completing the demolding of the injection molded product.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-cavity, one-piece injection mold comprising: The main body mechanism (100) and the ejection mechanism (200) are characterized in that the main body mechanism (100) comprises a lower mold (110), a plurality of support columns (120) fixed in an annular array outside the lower mold (110), a movable upper mold assembly (130) sleeved on the support columns (120), a water inlet component (140) installed at the bottom end of the lower mold (110), an annular hollow pipe (150) fixed on the outer side of the lower mold (110), and a drain pipe (160) in communication with the annular hollow pipe (150) at the end. The top end of the lower mold (110) is provided with a plurality of forming grooves (111) in an annular array, vertical flow channels (112) are arranged in an array on both sides of each forming groove (111) in the inner cavity of the lower mold (110), the top end of the arrayed vertical flow channels (112) is provided with a horizontal flow channel (113) extending out of the lower mold (110), the bottom end of the vertical flow channel (112) is in communication with the water inlet component (140), and the end of the horizontal flow channel (113) is in communication with the annular hollow pipe (150). The ejection mechanism (200) comprises a plurality of ejection components (210) arranged in the forming grooves (111) and extending downward out of the lower mold (110), and a driving component (220) movably arranged in the inner cavity of the support column (120) and fixedly connected with the ejection component (210) at the bottom end. The driving component (220) comprises a T-shaped rod (221) movably arranged in the inner cavity of the support column (120), a connecting rod (222) fixedly connected with the bottom end of the T-shaped rod (221) at one end and extending out of the support column (120) and fixedly connected with the ejection component (210) at the other end, a spring (223) sleeved on the T-shaped rod (221), and a protrusion (224) fixedly connected with the T-shaped rod (221) at the top end and extending out of the support column (120).

2. The multi-cavity one-piece injection mold of claim 1, wherein, The water inlet component (140) comprises a central shell (141) fixed at the bottom end of the lower mold (110), a plurality of branch pipes (142) fixed outside the central shell (141) and in communication with the inner cavity of the central shell (141), and a water inlet pipe (143) in communication with the central shell (141) at the end.

3. The multi-cavity one-piece injection mold of claim 1, wherein, The upper mold assembly (130) comprises a sleeve (131) movably sleeved outside the support column (120) and an upper mold body (132) arranged above the lower mold (110) and fixedly connected with the sleeve (131).

4. The multi-cavity one-piece injection mold of claim 1, wherein, The ejection component (210) comprises a top plate (211) fitted on the bottom wall of the forming groove (111), a support rod (212) fixedly connected with the bottom end of the top plate (211) and extending downward out of the lower mold (110), and an annular plate (213) connected with a plurality of support rods (212).

5. The multi-cavity one-piece injection mold of claim 4, wherein, The connecting rod (222) is fixedly connected with the annular plate (213) at one end and fixedly connected with the bottom end of the T-shaped rod (221) at the other end.

6. The multi-cavity one-piece injection mold of claim 1, wherein, The support column (120) is internally provided with a T-shaped cylinder groove (121), and the spring (223) is fixedly connected with the inner wall of the T-shaped cylinder groove (121) at one end and the bottom end of the T-shaped rod (221) at the other end.

7. The multi-cavity one-piece injection mold of claim 3, wherein, The protrusion (224) is located above the sleeve (131).

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