Special injection molding machine for double-color hose

Abstract

The utility model discloses a special injection molding machine for a double-color hose. The special injection molding machine comprises a rack, a lower mold plate is arranged on the rack, a stand column penetrates through the rack, an upper mold plate is mounted at the upper end of the stand column, a mold locking mechanism is arranged between the rack and the stand column, and an injection molding device is arranged on the upper mold plate; the length of the rack is set to be L, the width of the rack is set to be W, the height of the rack is set to be H, L is smaller than W, an operation cabinet is fixed to one side of the rack in the length direction, the length of the operation cabinet is L1, the width of the operation cabinet is W1, L + L1 = W + X, and X is larger than or equal to-100 mm and smaller than or equal to 100 mm; the minimum die thickness is set to be h1, the maximum die opening distance is set to be h2, and H: h1: h2 = 30: 7-9: 15-17. According to the structure, the stability of the special injection molding machine for the double-color hose is improved while the mold opening distance is increased.

Description

Technical Field

[0001] The utility model relates to the field of injection molding machines, in particular to a special injection molding machine for a two-color hose. Background Art

[0002] Injection molding machines generally include vertical injection molding machines and horizontal injection molding machines. Injection molding machines are usually composed of injection systems, mold clamping systems, hydraulic transmission systems, electrical control systems, lubrication systems, heating and cooling systems, safety monitoring systems, etc. The injection system is one of the most important components of the injection molding machine. There are generally three main forms: plunger type, screw type, and screw pre-plastic plunger injection type. The most widely used is the screw type. Its function is to heat and plasticize a certain amount of plastic within a specified time during the injection molding process of the injection molding machine, and then inject the molten plastic into the mold cavity through the screw at a certain pressure and speed. After the injection is completed, the molten material injected into the mold cavity is kept in a fixed shape. The function of the mold clamping system is to ensure that the mold can be closed, opened and ejected. At the same time, after the mold is closed, it gives the mold enough clamping force to resist the mold cavity pressure generated by the molten plastic entering the mold cavity, prevent the mold from opening, and cause the product to be in a bad state. The function of the hydraulic transmission system is to provide power for the various actions required by the injection molding machine according to the process, and meet the pressure, speed, temperature and other requirements of each part of the injection molding machine. The electrical control system and the hydraulic system are reasonably coordinated to achieve the process requirements of the injection molding machine, such as pressure, temperature, speed, time and various program actions of the injection molding machine. The heating system is used to heat the barrel and the injection nozzle. The barrel of the injection molding machine generally uses an electric heating coil as a heating device, which is installed on the outside of the barrel and detected in sections with a thermocouple. The heat is conducted through the barrel wall to provide a heat source for the plasticization of the material; the cooling system is mainly used to cool the oil temperature. Excessive oil temperature will cause a variety of faults, so the oil temperature must be controlled. Another location that needs to be cooled is near the discharge port of the material pipe to prevent the raw material from melting at the discharge port, resulting in the failure of the raw material to be discharged normally. The safety device of the injection molding machine is mainly used to protect the safety of people and machines. In the past, products of one color were the main ones, and their molding was simple and easy to control the injection molding process. Nowadays, many two-color or multi-color products have appeared, and therefore, two-color or multi-color molding is inevitable. Two-color and multi-color molding mainly use two material tubes of two-color molding machines and multiple material tubes of multi-color molding machines to cooperate with two sets of molds and multiple sets of molds in sequence to form products through two or more moldings. If different products are to be molded, the inserts on the jig need to be replaced, and the existing installation of inserts is troublesome and the installation position is inaccurate. Due to the rotatable jig, when installing the insert on the jig, in order to make the cooling more sufficient, a cooling channel needs to be set on the insert, but the installed insert is rotating, and the cooling pipeline is generally fixed. If the existing ordinary structure is used, the cooling water pipe will be entangled. The barrel and screw are necessary devices for molding plastics, rubber, silicone, etc.The existing barrel and screw mainly include a barrel, a screw, a nozzle seat and a nozzle. During the extrusion process, the rotation of the screw will generate shear heat to heat the material in the barrel. In addition, a heating ring is generally provided on the barrel to heat the material in the barrel. However, in the actual process, once the temperature is too high, the existing barrel and screw can only cool the material by natural cooling, which takes a long time and has low efficiency.

[0003] In order to solve the above problems, the patent document with Chinese patent application number 201711242232.8 and announcement date 2020.06.16 provides a central turret multi-color vertical injection molding machine and injection molding method. The injection molding machine includes a frame, a lower mold plate, an upper mold plate, a locking mold plate, a guide column, a central turret, an injection device and a central turret stripping device. The central turret has a positioning groove for positioning the insert seat to facilitate the installation of the insert seat. The hopper basket in the injection device has criss-cross heating plates, which can evenly heat the material. By controlling the temperature of the barrel, the injection effect is better. There is a nozzle on the barrel, and the needle valve and pneumatic control are used to make the material control more reliable. The stripping device can reliably unload the finished product. The injection molding method is to realize mold opening and closing through mold locking, realize multi-color injection molding by using the central turret, and realize stripping by using the central turret stripping device.

[0004] For the above-mentioned vertical injection molding machine, the mold and the injection device both move up and down, so the mold opening distance should not be too high, otherwise it will easily cause the injection molding machine to tilt and cause poor stability. Summary of the invention

[0005] The utility model aims to provide a special injection molding machine for a two-color hose. The structure increases the mold opening distance and improves the stability of the special injection molding machine for a two-color hose.

[0006] In order to achieve the above-mentioned purpose, a two-color hose special injection molding machine includes a frame, a lower template is arranged on the frame, a column passes through the frame, an upper template is installed on the upper end of the column, a clamping mechanism is arranged between the frame and the column, and an injection molding device is arranged on the upper template; the length of the frame is set to L, the width of the frame is set to W, and the height of the frame is set to H, wherein L<W, an operating cabinet is fixed on one side of the length direction of the frame, the length of the operating cabinet is L1, the width of the operating cabinet is W1, wherein L+L1=W+X, -100mm≤X≤100mm; the minimum mold thickness is set to h1, the maximum mold opening distance is set to h2, H:h1:h2=30:7-9:15-17.

[0007] With the above arrangement, the two-color hose is formed in the vertical direction, and the two-color hose is generally relatively long, so the maximum mold opening distance is required to be large. In the utility model, the ratio of the height H of the frame to the maximum mold opening distance h2 is close to 2:1. Therefore, the mold opening distance of the entire two-color hose special injection molding machine is relatively large. However, since the utility model is designed as L+L1=W+X, -300mm≤X≤300mm, that is, below the lower template, the frame and the operation cabinet basically form a positive direction, and the operation cabinet itself has weight. Therefore, the center of gravity of the entire two-color hose special injection molding machine drops and is close to the center of the downward projection of the two-color hose special injection molding machine, so that the entire two-color hose special injection molding machine has good stability, is not easy to tip over, and ensures the maximum mold opening distance.

[0008] Furthermore, a support frame is fixed on the upper end of the frame, the lower template and the upper template are located in the support frame, and the injection molding device is slidably arranged on the support frame. The support frame is fixed on the frame, and the injection molding device is slidably arranged on the support frame, so that the injection molding device can be guided and supported by the support frame, so that the movement of the injection molding device is more stable, and the support of the injection molding device is more stable.

[0009] Furthermore, the support frame comprises a lower beam, an upper beam and a support beam, the support beam is connected between the lower beam and the upper beam, and the injection molding device slides through the upper beam. The structure is simple and the support reliability is good.

[0010] Furthermore, W1=W. In this way, the two-color hose special injection molding machine is not easy to deviate in the width direction.

[0011] Furthermore, a disc is arranged on the lower template, and two injection molding devices are arranged, and the two injection molding devices are symmetrical with respect to a horizontal line passing through the center of the disc.

[0012] Furthermore, the height H of the frame is 1505 mm, the minimum mold thickness h1 is 350-450 mm, and the maximum mold opening distance h2 is 750-850 mm.

[0013] Furthermore, the height of the two-color hose special injection molding machine is 3230mm-4000mm, and the total height of the frame and the support frame is 3290mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model.

[0015] Figure 2 It is a side view of the utility model.

[0016] Figure 3 It is a top view of the utility model. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figures 1 to 3 As shown, a two-color hose special injection molding machine includes a frame 1, a support frame 2 fixed on the frame 1, a lower mold plate 3, a column 4, an upper mold plate 5, a clamping mechanism and an injection molding device 6.

[0019] The support frame 2 includes a lower beam 21, an upper beam 22 and a support beam 23. The support beam 23 is connected between the lower beam 21 and the upper beam 22. The injection molding device 6 slides through the upper beam 22 to form a space on the support frame 2. The lower template 3 and the upper template 5 are both located in the space. The support frame 2 is fixed on the frame 1, and the injection molding device 6 is slidably set on the upper beam 22. The injection molding device 6 can be guided and supported by the support frame 2, so that the movement of the injection molding device 6 is more stable, and the support of the injection molding device 6 is more stable. In addition, the support frame of this structure is simple in structure and has good support reliability.

[0020] A lower template 3 is arranged on the frame 1 , and a disc 31 is arranged on the lower template 1 . The disc 31 is driven by a motor installed in the frame 1 , and the disc 31 is used to install the lower mold of the mold.

[0021] The frame 1 is provided with columns 4. In this example, each injection molding device 6 is provided with four columns. An upper mold plate 5 is installed on the upper end of the column 4. A clamping mechanism is provided between the frame 1 and the column 4. The clamping mechanism is an existing structure and will not be described in detail here. An injection molding device 6 is provided on the upper mold plate. The injection molding device is an existing structure and will not be described in detail here. Two injection molding devices 6 are provided, and the two injection molding devices are symmetrical with respect to a horizontal line P passing through the center of the disk.

[0022] In this embodiment, the length of the frame 1 is set to L, the width of the frame 1 is set to W, and the height of the frame 1 is set to H, wherein L<W, an operating cabinet 7 is fixed on one side of the length direction of the frame 1, the length of the operating cabinet 7 is L1, the width of the operating cabinet 7 is W1, wherein L+L1=W+X, -300mm≤X≤300mm, W1=W; the minimum mold thickness is set to h1, the maximum mold opening distance is set to h2, H:h1:h2=30:7-9:15-17. In this embodiment, the height H of the frame 1 is 1505mm, the minimum mold thickness h1 is 350-450mm, and the maximum mold opening distance h2 is 750-850mm. The height H1 of the special injection molding machine for two-color hoses is 3230mm-4000mm, and the total height H2 of the frame and the support frame is 3290mm. L is 1000mm, W is 1660mm, L1 is 930mm, and W1 is 1660mm.

[0023] In this embodiment, the two-color hose is formed in the vertical direction, and the two-color hose is generally relatively long, so the maximum mold opening distance is required to be large. In the utility model, the ratio of the height H of the frame to the maximum mold opening distance h2 is close to 2:1. Therefore, the mold opening distance of the entire two-color hose special injection molding machine is relatively large. However, since the utility model is designed as L+L1=W+X, -300mm≤X≤300mm, that is, below the lower template, the frame and the operation cabinet basically form a positive direction, and the operation cabinet itself has weight. Therefore, the center of gravity of the entire two-color hose special injection molding machine drops and is close to the center of the downward projection of the two-color hose special injection molding machine, so that the entire two-color hose special injection molding machine has good stability, is not easy to tip over, and ensures the maximum mold opening distance.

Claims

1. A two-color hose special injection molding machine, comprising a frame, a lower template is arranged on the frame, a column passes through the frame, an upper template is installed on the upper end of the column, a clamping mechanism is arranged between the frame and the column, and an injection molding device is arranged on the upper template; characterized in that: Set the length of the rack to L, the width of the rack to W, and the height of the rack to H, where L<W. An operating cabinet is fixed on one side of the length direction of the rack. The length of the operating cabinet is L1, and the width of the operating cabinet is W1, where L+L1=W+X, -300mm≤X≤300mm; set the minimum mold thickness to h1, and the maximum mold opening distance to h2, H:h1:h2=30:7-9:15-17.

2. A two-color hose special injection molding machine according to claim 1, characterized in that: A support frame is fixed at the upper end of the frame, a lower template and an upper template are located in the support frame, and an injection molding device is slidably arranged on the support frame.

3. A two-color hose special injection molding machine according to claim 2, characterized in that: The support frame comprises a lower beam, an upper beam and a support beam, the support beam is connected between the lower beam and the upper beam, and the injection molding device slides through the upper beam.

4. The two-color hose special injection molding machine according to claim 1, characterized in that: W1=W.

5. The two-color hose special injection molding machine according to claim 1, characterized in that: A disc is arranged on the lower template, and two injection molding devices are arranged, and the two injection molding devices are symmetrical with respect to a horizontal line passing through the center of the disc.

6. A two-color hose special injection molding machine according to claim 2, characterized in that: The height H of the frame is 1505mm, the minimum mold thickness h1 is 350-450mm, and the maximum mold opening distance h2 is 750-850mm.

7. A two-color hose special injection molding machine according to claim 6, characterized in that: The height of the two-color hose special injection molding machine is 3230mm-4000mm, and the total height of the frame and the support frame is 3290mm.

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