Reset mold opening forming mechanism

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a reset mold opening forming mechanism which comprises a first color mold, a second color mold mounted at the top of the first color mold, a mold structure arranged on the outer surface of the first color mold, limiting structures mounted in the mold structure and close to the front side and the back side, and an adjusting structure mounted in the mold structure and close to the bottom end. The adjusting structure comprises a connecting limiting unit and an adjusting unit, the adjusting unit comprises an insert pin meson, an ejector pin is connected to the bottom of the insert pin meson, a seesaw is connected to the bottom end of the ejector pin, and an insert is connected to the end, away from the ejector pin, of the seesaw. According to the reset mold opening forming mechanism, when the upper mold is closed, the upper mold is used for pressing the insert pin meson and the ejector pin so as to drive the seesaw to adjust the angle through the positioning pin, and therefore the height of the insert can be adjusted conveniently, and the size of a forming cavity in the middle of the lower mold and the size of a forming cavity in the middle of the upper mold can be adjusted; and the production efficiency of products is improved and the processing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a reset mold opening molding mechanism. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. Its advantages include high production speed, high efficiency, automated operation, a wide variety of designs and colors, shapes ranging from simple to complex, and sizes ranging from large to small. Furthermore, it produces precise product dimensions, is easily updated, and can produce complex shapes. Injection molding is suitable for mass production and the molding of complex products.

[0003] During the mold opening and closing process for certain products, the clamping force is only locally strong along the edges of the fixed mold. If the mold is not designed with a fixed mold ejection mechanism in these areas with strong clamping force, the product may stick to the fixed mold or experience severe local deformation after mold opening. However, in cases where the clamping force is only locally strong, if the fixed mold is ejected using a push rod pushing a fixed plate, similar to the movable mold, the cost will be high and the space required will be large. Moreover, a large amount of space will need to be hollowed out on the back of the fixed mold sleeve to accommodate the fixed mold ejection mechanism, which will affect the strength of the fixed mold and thus the mold life.

[0004] For example, an independent fixed mold ejection mechanism disclosed in Chinese patent CN205438995U is provided, through a fixed mold and a movable mold, with a reset rod that can move along its own axial direction provided in the fixed mold. The axis of the reset rod is perpendicular to the movable mold parting surface. The front end of the reset rod has a pressure portion that abuts the movable mold parting surface and a push portion that abuts the product mold surface. The rear end of the reset rod is connected to an elastic body, which is fixedly connected to the fixed mold. When the mold is opened, the driving force is provided by the elastic body, and the push portion of the reset rod is used to eject and compress the product in the mold cavity to ensure that the product is not adhered to the fixed mold or deformed toward the fixed mold. When the mold is closed, the pressure portion touches the movable mold parting surface to reset the elastic body, and the cycle continues. The overall structure is simple and takes up little space in the fixed mold.

[0005] However, in the prior art, during the injection molding process of two-color products, the mold needs to be reset, opened, and closed to perform two-color molding. During the two-color mold injection molding process, the mold molding cavity needs to be adjusted to perform precise molding. However, in the prior art, the mold is usually molded in one step, which is not convenient for molding adjustment, thereby affecting processing efficiency and cost.

[0006] For this reason, we urgently need to provide a kind of reset mold opening forming mechanism. Utility Model Content

[0007] The purpose of the present utility model is to provide a reset mold opening molding mechanism to solve the problem raised in the above background technology that in the process of injection molding a two-color product, the mold needs to be reset, opened and closed to form the two-color mold, and the mold molding cavity needs to be adjusted during the two-color mold injection process to perform precise molding. However, in the prior art, the mold is usually molded in one step, which is not convenient for molding adjustment, thereby affecting processing efficiency and cost.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reset mold opening molding mechanism, comprising a first color mold, a second color mold installed on the top of the first color mold, a mold structure provided on the outer surface of the first color mold, a limiting structure installed inside the mold structure near the front and back sides, and an adjustment structure installed inside the mold structure near the bottom end.

[0009] The adjustment structure includes a connection limiting unit and an adjustment unit, and the connection limiting unit is arranged at the bottom of the adjustment unit.

[0010] The regulating unit comprises a pin-inserted meson, a thimble is installed and connected at the bottom of the pin-inserted meson, a seesaw is connected at the bottom end of the thimble, and an insert is connected at one end of the seesaw away from the thimble.

[0011] Preferably, the connection limiting unit includes a positioning pin, both ends of the outer surface of the positioning pin are connected to pressure blocks, and the top of the insert is connected to a positioning rod.

[0012] Preferably, the middle portion of the outer surface of the positioning pin is rotatably connected to the inner portion of the rotating hole provided in the middle of the seesaw, the ends of the outer surface of the positioning pin are rotatably connected to the inner wall of the rotating hole provided in the middle of the pressure block, and the bottom surface of the insert is slidably connected to the outer surface of the seesaw. The outer surface of the positioning rod is clamped to the temporal portion of the limiting hole groove provided in the bottom of the upper mold.

[0013] Preferably, the mold structure includes a base, a top seat is provided on the top of the base, a lower mold is installed in the middle of the top surface of the top seat, and an upper mold is installed on the top of the lower mold.

[0014] Preferably, the lower mold is installed inside a rectangular installation groove opened in the middle of the top surface of the top seat, the insert is installed inside the installation groove opened in the middle of the bottom surface of the lower mold, and the top of the insert is arranged inside the molding cavity opened in the middle of the lower mold and the upper mold.

[0015] Preferably, the limiting structure includes a limiting block, a directional rod is provided on the top of the back of the limiting block, and the outer surface of the limiting block is internally engaged with a rectangular slot provided in the middle of the bottom surface of the upper mold near the front end.

[0016] Preferably, the limit block is fixedly installed in the middle of the top surface of the lower mold near the front end, the bottom end of the directional rod is connected to the top surface of the lower mold near the back end, and the outer surface of the directional rod is slidably connected to the inner wall of the positioning hole opened on the top surface of the upper mold.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The reset mold opening molding mechanism, through the setting of the adjustment structure, uses the upper mold to press the insert pin and the ejector pin to drive the seesaw to adjust the angle using the positioning pin when the upper mold is closed. This makes it easy to adjust the height of the insert, thereby adjusting the size of the molding cavity in the middle of the lower mold and the upper mold, which is beneficial to improving product production efficiency and reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall appearance of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is an enlarged view of the internal adjustment structure of the utility model;

[0022] Figure 4 This is an enlarged view of the adjustment structure of the utility model;

[0023] Figure 5 This is an enlarged view of the secondary mold clamping adjustment structure of the utility model;

[0024] Figure 6 This is an enlarged disassembled view of the two-color product of the present invention.

[0025] In the figure: 1, first color mold; 2, second color mold; 101, base; 102, top seat; 103, lower mold; 104, upper mold; 201, inlay pin; 202, ejector pin; 203, seesaw; 204, positioning pin; 205, pressure block; 206, insert; 207, positioning rod; 301, limit block; 302, orientation rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1-6, the utility model provides a technical solution:

[0028] Example 1:

[0029] A reset mold opening molding mechanism includes a first color mold 1, a second color mold 2 is installed on the top of the first color mold 1, a mold structure is provided on the outer surface of the first color mold 1, a limiting structure is installed near the front and back sides of the mold structure, and an adjustment structure is installed near the bottom of the mold structure.

[0030] The adjustment structure includes a connecting and limiting unit and an adjustment unit. The connecting and limiting unit is arranged at the bottom of the adjustment unit. The adjustment unit includes a pin insert 201. The bottom of the pin insert 201 is connected to a pin 202. The bottom end of the pin 202 is connected to a seesaw 203. The end of the seesaw 203 away from the pin 202 is connected to an insert 206. The connecting and limiting unit includes a positioning pin 204. The two ends of the positioning pin 204 are connected to a pressure block 205. The top of the insert 206 is connected to a positioning rod 207.

[0031] The middle of the outer surface of the positioning pin 204 is rotatably connected to the inner wall of the rotating hole opened in the middle of the seesaw 203, the two ends of the outer surface of the positioning pin 204 are rotatably connected to the inner wall of the rotating hole opened in the middle of the pressing block 205, and the bottom surface of the insert 206 is slidably connected to the outer surface of the seesaw 203.

[0032] The mold structure includes a base 101, with a top base 102 mounted on top of the base 101. A lower mold 103 is mounted in the middle of the top surface of the top base 102, and an upper mold 104 is mounted on top of the lower mold 103. The lower mold 103 is mounted inside a rectangular mounting groove in the middle of the top surface of the top base 102. The insert 206 is mounted inside the mounting groove in the middle of the bottom surface of the lower mold 103. The top of the insert 206 is located inside the molding cavities in the middle of the lower mold 103 and the upper mold 104.

[0033] The limiting structure includes a limiting block 301, with an orienting rod 302 disposed on the top of the back of the limiting block 301. The limiting block 301 is fixedly mounted in the middle of the top surface of the lower mold 103, near the front end. The bottom end of the orienting rod 302 is connected to the top surface of the lower mold 103, near the back end. The outer surface of the orienting rod 302 is slidably connected to the inner wall of the positioning hole in the top surface of the upper mold 104.

[0034] By setting the adjustment structure, when the upper mold 104 is closed, the upper mold 104 is used to press the insert pin 201 and the ejector pin 202, thereby driving the seesaw 203 to adjust the angle using the positioning pin 204, thereby facilitating the adjustment of the height of the insert 206, thereby adjusting the size of the molding cavity in the middle of the lower mold 103 and the upper mold 104, which is beneficial to improving the production efficiency of the product and reducing the processing cost.

[0035] When the first color mold 1 is injection molded, the sliding connection between the upper mold 104 and the outer surface of the directional rod 302 is utilized, and the rectangular groove in the middle of the bottom surface of the upper mold 104 near the front side is opened to engage with the limit block 301, so as to close the lower mold 103 and the upper mold 104, and the limit block 301 and the directional rod 302 are used to assist in precise mold closing. During the mold closing process, the upper mold 104 is used to squeeze the inlay pin 201 and the ejector pin 202, so that the inlay pin 201 and the ejector pin 202 push one end of the seesaw 203. Since the seesaw 203 is a curved rod, and the middle part of the seesaw 203 is limited by the rotation of the positioning pin 204 and the pressure block 205, the inlay 206 is lifted by one end of the seesaw 203, so that the molding cavity in the middle of the lower mold 103 and the upper mold 104 becomes smaller, thereby facilitating precise molding of the first color mold 1.

[0036] Example 2:

[0037] On the basis of embodiment 1, when the second color mold 2 is processed, the positions of the positioning rod 207 and the inlay pin 201 and the ejector pin 202 are interchanged and installed, so that when the upper mold 104 is closed, the upper mold 104 squeezes the inlay pin 201 and the ejector pin 202, thereby pushing the insert 206 to descend. When the insert 206 descends, it squeezes one end of the seesaw 203, thereby driving the other end of the seesaw 203 to rise, driving the positioning rod 207 to rise and insert it into the positioning groove opened in the upper mold 104, thereby ensuring the stability of the mold closing. At the same time, the inlay pin 201 and the ejector pin 202 are used to press down the position of the insert 206, and the size of the molding cavity between the lower mold 103 and the upper mold 104 is adjusted, thereby adjusting the molding space of the second color mold 2, ensuring the molding effect of the first color mold 1 and the second color mold 2, and no additional mold needs to be prepared for processing and molding. It is easy to adjust during the first molding and the second molding, which is conducive to improving the processing efficiency and effectively reducing the processing and production costs.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A reset mold opening molding mechanism, comprising a first color mold (1), a second color mold (2) being mounted on top of the first color mold (1), characterized in that: The outer surface of the first color mold (1) is provided with a mold structure, a limiting structure is installed inside the mold structure near the front and back sides, and an adjustment structure is installed inside the mold structure near the bottom end; The adjustment structure includes a connection limiting unit and an adjustment unit, and the connection limiting unit is arranged at the bottom of the adjustment unit; The regulating unit comprises a pin-inserted meson (201), a top pin (202) is installed and connected at the bottom of the pin-inserted meson (201), a seesaw (203) is connected at the bottom end of the top pin (202), and an insert (206) is connected at one end of the seesaw (203) away from the top pin (202).

2. A reset mold opening molding mechanism according to claim 1, characterized in that: The connection limiting unit comprises a positioning pin (204), both ends of the outer surface of the positioning pin (204) are connected to pressure blocks (205), and the top of the insert (206) is connected to a positioning rod (207).

3. A reset mold opening molding mechanism according to claim 2, characterized in that: The middle of the outer surface of the positioning pin (204) is rotatably connected to the inside of the rotating hole opened in the middle of the seesaw (203), the two ends of the outer surface of the positioning pin (204) are rotatably connected to the inner wall of the rotating hole opened in the middle of the pressing block (205), and the bottom surface of the insert (206) is slidably connected to the outer surface of the seesaw (203).

4. The reset mold opening molding mechanism according to claim 1, characterized in that: The mold structure comprises a base (101), a top seat (102) is provided on the top of the base (101), a lower mold (103) is installed in the middle of the top surface of the top seat (102), and an upper mold (104) is installed on the top of the lower mold (103).

5. A reset mold opening forming mechanism according to claim 4, characterized in that: The lower mold (103) is installed inside a rectangular installation groove opened in the middle of the top surface of the top seat (102), the insert (206) is installed inside the installation groove opened in the middle of the bottom surface of the lower mold (103), and the top of the insert (206) is set inside the molding cavity opened in the middle of the lower mold (103) and the upper mold (104).

6. The reset mold opening molding mechanism according to claim 1, characterized in that: The limiting structure comprises a limiting block (301), and a directional rod (302) is provided on the top of the back side of the limiting block (301).

7. The reset mold opening molding mechanism according to claim 6, characterized in that: The limit block (301) is fixedly installed in the middle of the top surface of the lower mold (103) near the front end, the bottom end of the directional rod (302) is connected to the top surface of the lower mold (103) near the back end, and the outer surface of the directional rod (302) is slidably connected to the inner wall of the positioning hole provided on the top surface of the upper mold (104).

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