Automatic small injection molding machine

Abstract

The present invention relates to an automatic small injection molding machine capable of automatically producing various products in a simple manual structure, including: a mold automatic setting part which automatically sets a mold for injection molding; a resin injection part which is provided at an upper side of the mold automatic setting part, melts resin and injects the resin into the mold; a piston part which is inserted into an upper side of the resin injection part and advances and retreats in an up-and-down direction to pressurize the resin inside the resin injection part in the direction of the mold; a piston pressurizing part which is provided in conjunction with the piston part and applies pressure to the piston part in the direction of the resin injection part; a control part which applies a pressure value and a pressurizing time applied to the piston part by the piston pressurizing part; a resin supply part which is provided at one side of the resin injection part and supplies resin into the resin injection part; and a product automatic discharge part which automatically discharges a product formed by the mold.

Description

Technical Field

[0001] This invention relates to an automated small injection molding machine capable of automatically producing various products with a simple manual structure. Background Technology

[0002] Generally speaking, an injection unit is a mechanical device that injects synthetic resin heated and molten inside a cylinder through a nozzle into a mold formed into a desired shape and then cools it to form a product. The synthetic resin raw material is fed into a cylinder located on one side of the injection unit and melted.

[0003] The molten resin is injected under high pressure through a nozzle located on one side of the cylinder into a mold that typically consists of an upper and lower part that are symmetrical to each other. When the molten resin injected into the mold solidifies, the upper and lower molds are separated from each other to remove the molded product.

[0004] Therefore, a heater is installed in the cylinder for heating, and the solid resin inside the heated cylinder melts and becomes a fluid. The fluid resin with fluidity flows downward toward the nozzle side and is sprayed.

[0005] However, there are problems with the generation of harmful gases during the heating process of the molten resin as described above, and there is also the problem that a small injection device capable of easily manufacturing various products has not yet been developed. Summary of the Invention

[0006] Technical problems to be solved

[0007] The technical problem to be solved by the present invention is to provide an automatic small injection molding machine that can automatically produce various products with a simple manual structure.

[0008] Solution to the problem

[0009] To solve the above-mentioned technical problems, the automatic small injection molding machine according to the present invention includes: an automatic mold setting unit that automatically sets a mold for injection molding; a resin spraying unit disposed on the upper side of the automatic mold setting unit, which melts resin and injects the resin into the injection mold; a piston unit that is inserted into the upper side of the resin spraying unit and moves forward and backward in a vertical direction to pressurize the resin in the resin spraying unit toward the injection mold; a piston pressurizing unit that is combined with the piston unit and applies pressure to the piston unit in the direction of the resin spraying unit; a control unit that controls the pressure value and pressurization time applied to the piston unit by the piston pressurizing unit; a resin supply unit disposed on one side of the resin spraying unit and supplies resin into the resin spraying unit; and an automatic product discharge unit that automatically discharges the product formed by the mold.

[0010] Furthermore, in this invention, preferably, the piston pressurizing part includes: a driven shaft, which is disposed on the side of the piston part in a manner parallel to the piston part and moves the piston part in a vertical direction; and a rotary motor, which is coupled to the upper end of the driven shaft and rotates the driven shaft.

[0011] Furthermore, in this invention, preferably, the control unit is a force sensor that is attached to the upper end of the piston unit.

[0012] Furthermore, in this invention, preferably, the automatic mold setting unit includes: a mold back support portion, which is tightly fitted to the back of the injection mold to support it; a mold front pressure portion, which pressurizes the front of the injection mold towards the mold back support portion to fix the injection mold; and a mold position limiting portion, which is disposed below the mold back support portion and the mold front pressure portion, and limits the central position of the injection mold with respect to the resin spraying portion.

[0013] Furthermore, in this invention, preferably, the piston portion includes: a piston that moves in a vertical direction in a state of being inserted into the resin spraying portion; a piston rod that is disposed in connection with the upper end of the piston; and a rack block that is disposed in connection with the upper outer side of the piston rod and has a rack that meshes with the driven shaft.

[0014] Furthermore, in this invention, preferably, the automatic mold setting unit also has an automatic pressurizing unit, which automatically moves and pressurizes when the injection mold is loaded.

[0015] The effects of the invention

[0016] The automatic small injection molding machine according to the present invention has the following advantages: it can easily realize the setting of injection molds, and can automatically produce various products with simple operation, and can effectively suck in and expel harmful gases generated during the production process to perform operations safely. Attached Figure Description

[0017] Figure 1 This is a perspective view showing the appearance of an automated miniature injection molding machine according to an embodiment of the present invention.

[0018] Figure 2 This is an internal perspective view showing the housing structure of an automatic miniature injection molding machine according to an embodiment of the present invention.

[0019] Figure 3 This is a perspective view showing the internal structure of a small automatic injection molding machine according to an embodiment of the present invention.

[0020] Figure 4 This is a front view showing the structure of a small automatic injection molding machine according to an embodiment of the present invention.

[0021] Figure 5 This is a perspective view showing the internal structure of a small automatic injection molding machine according to an embodiment of the present invention, viewed from another direction.

[0022] (Explanation of reference numerals in the attached diagram)

[0023] 100: An automatic miniature injection molding machine according to an embodiment of the present invention

[0024] 110: Automatic Mold Setting Department

[0025] 120: Resin Spraying Section

[0026] 130: Piston section

[0027] 140: Piston pressurization section

[0028] 150: Resin Automatic Supply Department

[0029] 160: Casing

[0030] 170: Automatic Product Discharge Section

[0031] 180: Control Department Detailed Implementation

[0032] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figures 1 to 5 As shown, the automatic small injection molding machine 100 according to this embodiment includes an automatic mold setting unit 110, a resin spraying unit 120, a piston unit 130, a piston pressurizing unit 140, a control unit 180, and a resin supply unit 150.

[0034] First, the automatic mold setting unit 110 is a component that automatically sets the mold 10 for injection molding. That is, the automatic mold setting unit 110 automatically moves and fixes the required injection mold 10 to the correct position in order to mold a product using the automatic miniature injection molding machine 100 according to this embodiment.

[0035] Therefore, in this embodiment, specifically as follows: Figure 3 As shown, the automatic mold setting unit 110 may include a mold back support unit 112, a mold front pressure unit 114, and a mold position limiting unit 116. Firstly, as... Figure 3 As shown, the mold back support 112 is a component that fits tightly against the back of the injection mold 10 to support it.

[0036] Next, as Figure 3 and 5 As shown, the front pressure part 114 of the mold is a component in front of the injection mold 10 that moves by applying pressure to the front of the injection mold 10 towards the mold back support part 112 when the back of the injection mold 10 is supported by the mold back support part 112.

[0037] Therefore, in this embodiment, specifically as follows: Figure 3 As shown, the front pressure part 114 of the mold includes: a front pressure block, which contacts the front of the injection mold 10 and applies pressure to the front of the injection mold 10; and a pressure block moving part, which causes the front pressure block to move forward and backward.

[0038] In addition, there is an automatic pressurizing unit 113, which automatically moves and pressurizes the front pressurizing unit 114 of the mold when the injection mold 10 is loaded. The automatic pressurizing unit 113 is composed of a motor, and there is also a drive block 111 between the automatic pressurizing unit 113 and the front pressurizing unit 114 of the mold to drive the front pressurizing unit 114 of the mold.

[0039] Next, as Figure 3 As shown, the mold position limiting part 116 is disposed below the mold back support part 112 and the mold front pressure part 114, and is a constituent element that defines the central position of the injection mold 10 with reference to the resin injection part 120. For this purpose, the mold position limiting part 116 is configured as a track shape with a groove, the groove having a size in which the lower part of the injection mold 10 can be inserted.

[0040] Therefore, when the injection mold 10 is inserted into the mold position limiting part, its central position in the X-axis direction is limited. In this state, it moves forward and backward via the mold back support part 112 and the mold front pressure part 114, and its central position in the Y-axis direction is limited. Figure 3 As shown, in the injection mold 10, the first mold 12 and the second mold 14 are paired to form a mold.

[0041] Next, as Figure 3 As shown, the resin spraying unit 120 is disposed above the automatic mold setting unit 110 and is a component that melts resin and injects it into the injection mold 10. That is, as... Figure 3 and Figure 4As shown, the resin spraying unit 120 includes a body 122 that is generally cylindrical and a nozzle 124 disposed at the lower end of the body 122. A heater (not shown) is disposed on the body 122 to heat and melt the resin supplied to the interior of the body 122 to form resin.

[0042] Furthermore, the nozzle portion 124 sprays molten resin toward the resin inlet of the injection mold 10.

[0043] Next, as Figure 3 and Figure 4 As shown, the piston portion 130 is inserted into the upper side of the resin injection portion 120 and is a component that pressurizes the resin in the resin injection portion 120 toward the injection mold 10 by moving forward and backward in the vertical direction. That is, the piston portion 130 is inserted into the upper side of the resin injection portion 120, pressurizes in the downward direction, and injects the molten resin in the resin injection portion 120.

[0044] Therefore, specifically as follows Figure 3 to 5 As shown, the piston portion 130 includes: a piston (not shown) that moves vertically in a state of being inserted into the resin spraying portion 120; a piston rod 134 that is configured to engage with the upper end of the piston 132; and a rack block 136 that is configured to engage with the upper outer side of the piston rod 134 and has a rack that meshes with the driven shaft 142.

[0045] Next, as Figures 3 to 5 As shown, the piston pressurizing part 140 is provided in connection with the piston part 130 and is a component that applies pressure to the piston part 130 along the direction of the resin spraying part 120. That is, the piston pressurizing part 140 is a driving member for driving the piston part 130 in the vertical direction. In this embodiment, specifically as follows... Figure 3 and Figure 4 As shown, the piston pressurization part 140 includes: a driven shaft 142, the driven shaft 142 having a circular pinion that meshes with the rack block 136; and a rotary motor 144, the rotary motor 144 being disposed adjacent to the driven shaft 142 and providing power to rotate the driven shaft 142.

[0046] Here, for precise drive control, the rotary motor 144 is preferably configured as a geared motor.

[0047] Next, as Figure 3 and Figure 4As shown, the control unit 180 is a component that precisely controls the pressure value and pressurization time applied to the piston section 130 by the piston pressurization unit 140. That is, the control unit 180 is provided in a manner that is attached to the upper end of the piston section 130, and is preferably composed of a load cell capable of precisely controlling the pressure value applied to the piston section 130.

[0048] Furthermore, in this embodiment, the control unit 180 can also precisely set the time for applying pressure to the piston unit 130.

[0049] Next, as Figure 3 and Figure 4 As shown, the resin supply unit 150 is disposed on one side of the resin spraying unit 120 and is a component for supplying resin into the resin spraying unit 120. That is, the resin supply unit 150 supplies solid resin, which is in particulate form, into the resin spraying unit 120 from the outside.

[0050] Therefore, in this embodiment, specifically as follows: Figure 3 and Figure 4 As shown, the resin supply unit 150 includes a hopper 152 and a raw material supply port 154. Firstly, as... Figure 4 As shown, the hopper 152 is disposed on the upper side of the resin spraying section 120 and is a constituent element having a space filled with a certain amount of resin.

[0051] Next, as Figure 4 As shown, the raw material supply port 154 is located on the side of the hopper 152 and is a component for performing the function of initially feeding raw materials.

[0052] On the one hand, such as Figure 1 and Figure 3 As shown, the automatic miniature injection molding machine 100 according to this embodiment preferably also has a housing portion 160 and an automatic product discharge portion 170.

[0053] like Figure 1 and Figure 2 As shown, the housing portion 160 is a component that encloses and seals the resin injection portion 120 and the piston portion 130 from the outside. Since harmful and odorous gases may be generated during the melting of the resin in the resin injection portion 120, the housing portion 160 is used to prevent harmful gases from leaking to the outside.

[0054] Next, the automatic small injection molding machine 100 according to this embodiment also has an automatic product discharge unit 170 for automatically discharging the molded product 20. After the injection operation is completed, after the injection mold 10 is separated by the mold automatic setting unit 110, the automatic product discharge unit 170 pushes and separates the product 20 inserted into the mold 10, and the separated product 20 falls downward and is discharged.

[0055] On the one hand, the automatic product discharge unit 170 may also have a discharge robot that picks up and discharges the discharged products.

Claims

1. An automatic small injection molding machine, wherein, include: An automatic mold setting unit automatically sets the mold for injection molding; A resin injection unit is disposed above the automatic mold setting unit, which melts resin and injects the resin into the mold; A piston section is inserted into the upper side of the resin injection section and moves forward and backward in the vertical direction to pressurize the resin in the resin injection section toward the mold. A piston pressurizing section is provided in conjunction with the piston section and applies pressure to the piston section in the direction of the resin injection section; The control unit controls the pressure value and pressurization time applied to the piston by the piston pressurization unit; A resin supply unit, disposed on one side of the resin spraying unit, supplies resin into the resin spraying unit; and Automatic product discharge section, wherein the automatic product discharge section automatically discharges the product formed by the mold.

2. The automatic small injection molding machine according to claim 1, characterized in that, The piston pressurization section includes: A driven shaft, which is disposed parallel to the piston portion on the side of the piston portion and moves the piston portion vertically; and A rotary motor, which is coupled to the upper end of the driven shaft to rotate the driven shaft.

3. The automatic small injection molding machine according to claim 2, characterized in that, The control unit is a force sensor that is attached to the upper end of the piston.

4. The automatic small injection molding machine according to claim 1, characterized in that, The automatic mold setting unit includes: A mold back support portion, which fits tightly against the back of the mold to provide support; A front pressure section for the mold, which applies pressure to the front surface of the mold towards the rear support section of the mold to fix the mold; and A mold position limiting part is provided on the lower side of the mold back support part and the mold front pressure part, and limits the central position of the mold with reference to the resin spraying part.

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