Plastic mold with guide structure

Abstract

The utility model relates to the technical field of injection molds, in particular to a plastic mold with a guide structure, which comprises an upper mold and a lower mold, the upper mold and the lower mold are cylindrical molds with the same outer diameter, and the upper mold and the lower mold are fixedly connected through a mechanical structure. According to the plastic mold with the guide structure, locking devices used for locking horizontal and vertical deviation of the upper mold and the lower mold are improved to be in an inserting hole and inserting column locking mode in the circular diameter direction, the requirement for the number of the locking devices can be reduced through the structure, the using process of the mold is simplified, meanwhile, the locking devices are prevented from being inserted into the casting mold space, and the mold is convenient to use. The casting of the mold is influenced, and the quality and the stability of mold stripping are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a plastic mold with a guide structure. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes. Plastic molds are the mother of industry, and the release of new products will involve plastics. When plastic molds are used to mold some thinner plastic parts, if the horizontal and vertical directions cannot be strictly limited, the thickness of the plastic parts will be uneven. However, in the past, there was a lack of efficient guide and limit solutions, which made it very easy for the above situation to occur, reducing the qualified rate of the products. The existing mold core is prone to uneven force after stamping, resulting in displacement. Now there is an urgent need for a plastic mold with a core guide structure to solve the above problems.

[0003] China Patent Network discloses a plastic mold CN212472242U with a core guide structure. By arranging multiple locking devices on the surfaces of the upper and lower molds, the upper and lower molds are locked and limited in the horizontal and vertical directions, thereby improving the quality of the product. However, these locking structures are directly inserted into the space inside the casting mold. During the process of mold formation, due to the instability of the mold material, it is easy to cause unqualified products. Utility Model Content

[0004] The purpose of the utility model is to provide a plastic mold with a guide structure, which has the advantages of not interfering with the injection molding space and having a simplified structure, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a plastic mold with a guide structure, comprising an upper mold and a lower mold, wherein the upper mold and the lower mold are cylindrical molds with the same outer diameter, and the two are connected and fixed by a mechanical structure.

[0006] When in use, first connect the external power device to the socket head, lift the upper mold, put the injection molding material into the lower mold, and then insert the core of the upper mold into the casting groove of the lower mold. At this time, the locking rod is inserted into the locking groove, and the telescopic contact is compressed and not extended. At this time, rotate the upper mold to make the locking rod rotate in the locking groove again until the rotation positioning rod fits with the rotation positioning groove on the withdrawr. At this time, the telescopic contact extends to lock the upper and lower molds, completing the horizontal and vertical locking of the upper and lower molds. After the casting is completed, the withdrawal cylinder on the withdrawr blows air to retract the telescopic contact. At the same time, the socket head rotates and pulls the upper mold upward to release the locked state.

[0007] Preferably, the upper mold includes a mold core, a positioning rod, a rotational positioning rod, an upper mold ventilation groove and a socket joint. The mold core is a shaping structural block arranged at the center of the top surface of the upper mold. There are two positioning rods, which are installed on both sides of the bottom of the upper mold. The two positioning rods are located on the same diameter line. The rotational positioning rods are two rectangular protrusions arranged on the side wall of the upper mold, and a downwardly protruding positioning rod structure is provided at the edge. There are two rotational positioning rods, which are located on the outside of the positioning rods and are symmetrical around the center axis of the upper mold. The upper mold ventilation grooves are several divergent semicircular groove structures arranged on the bottom surface of the upper mold, which are connected to the surface of the mold core. The socket joint is a joint structure arranged on the top of the upper mold for connecting external power machinery.

[0008] The socket head is used as a control device for locking, unlocking and separating the upper and lower mold connections.

[0009] Preferably, the locking rod is a short cylindrical plug-in rod structure, and a telescopic contact is provided at the end of the locking rod, extending outward along the diameter.

[0010] The locking rod can move freely in the locking groove until the telescopic contact is inserted into the positioning hole.

[0011] Preferably, the lower mold includes a mold groove, a positioning groove, a withdraw device and a lower mold ventilation groove. The mold groove is a cavity structure located inside the lower mold. The positioning groove is arranged at the edge of the lower mold, and is two arc-shaped slot structures symmetrical along the center. A transverse circular through hole is provided at one end of the positioning groove. The withdraw device is a rectangular protrusion structure arranged on the outer side wall of the lower mold at the circular through hole of the positioning groove. The lower mold ventilation groove is a plurality of divergent semicircular groove structures arranged on the top surface of the lower mold, which are connected to the inside of the mold groove.

[0012] Preferably, the withdrawer includes a withdrawing cylinder and a rotation positioning groove, the withdrawing cylinder is a strong cylinder whose air outlet corresponds to the circular through hole of the locking groove, and the rotation positioning groove is a rectangular groove structure arranged on one side of the withdrawer.

[0013] Preferably, the rotation positioning groove and the rotation positioning rod can match each other.

[0014] Used to control the rotation angle of the upper and lower molds during installation to ensure the combination and stability during locking.

[0015] Preferably, the locking rod can be inserted into the locking groove, and the telescopic contact can be inserted into the circular through hole of the locking groove and correspond to the retreat cylinder.

[0016] The upper and lower molds are fixed and limited by the socket connection between the locking rod and the locking groove, and the retreat cylinder is used as an unlocking device.

[0017] Preferably, the upper mold vent groove and the lower mold vent groove correspond to each other one by one after the upper and lower molds are installed and locked, and a plurality of cylindrical through-hole structures connected to the outside are formed in the side walls of the upper and lower molds.

[0018] It can avoid defects such as water marks and pores in the mold caused by unbalanced internal air pressure during die casting.

[0019] Compared with the prior art, the utility model provides a plastic mold with a guide structure, which has the following beneficial effects: the plastic mold with a guide structure improves the locking device used to lock the horizontal and vertical offsets of the upper and lower molds into a socket and column locking form along the circular diameter direction. This structure can reduce the demand for the number of locking devices and simplify the use process of the mold. At the same time, it avoids the locking device from being inserted into the mold space, affecting the casting of the mold, and improves the quality and stability of the demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional demonstration diagram of the structure of the utility model;

[0021] Figure 2 This is a three-dimensional demonstration diagram of the mold on the structure of the utility model;

[0022] Figure 3 This is a three-dimensional demonstration diagram of the mold under the structure of the utility model;

[0023] Figure 4 It is a partial enlarged view of structure A of the utility model.

[0024] Among them: 1. upper mold; 101. mold core; 102. positioning rod; 1021. telescopic contact; 103. rotation positioning rod; 104. upper mold venting groove; 105. socket joint; 2. lower mold; 201. mold groove; 202. positioning groove; 203. withdrawer; 2031. withdrawing cylinder; 2032. rotation positioning groove; 204. lower mold venting groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 The utility model provides a technical solution: a plastic mold with a guide structure, comprising an upper mold 1 and a lower mold 2, the upper mold 1 and the lower mold 2 are cylindrical molds with the same outer diameter, and the two are connected and fixed by a mechanical structure.

[0027] When in use, first connect the external power device to the socket head 105, lift the upper mold 1, put the injection molding material into the lower mold 2, and then insert the core 101 of the upper mold 1 into the mold groove 201 of the lower mold 2. At this time, the locking rod 102 is inserted into the locking groove 202, and the telescopic contact 1021 is compressed and not extended. At this time, rotate the upper mold 1 to make the locking rod 102 rotate in the locking groove 202 again until the rotation positioning rod 103 is matched with the rotation positioning groove 2032 on the withdrawr 203. At this time, the telescopic contact 1021 extends out to lock the upper and lower molds, completing the horizontal and vertical locking of the upper and lower molds. After the casting is completed, the withdrawing cylinder 2031 on the withdrawr 203 blows air to retract the telescopic contact 1021. At the same time, the socket head 105 rotates and pulls the upper mold 1 upward to release the locked state.

[0028] Specifically, the upper mold 1 includes a mold core 101, a positioning rod 102, a rotation positioning rod 103, an upper mold ventilation groove 104 and a socket joint 105. The mold core 101 is a shaping structural block arranged at the center of the top surface of the upper mold 1. There are two positioning rods 102, which are installed on both sides of the bottom of the upper mold 1. The two positioning rods 102 are located on the same diameter line. The rotation positioning rod 103 is two rectangular protrusions arranged on the side wall of the upper mold 1, and a downwardly protruding positioning rod structure is provided at the edge. There are two rotation positioning rods 103, which are located on the outside of the positioning rod 102 and are symmetrical around the central axis of the upper mold 1. The upper mold ventilation groove 104 is a number of divergent semicircular groove structures arranged on the bottom surface of the upper mold 1, which are connected to the surface of the mold core 101. The socket joint 105 is a joint structure arranged on the top of the upper mold 1 for connecting an external power machinery.

[0029] Through the above technical solution, the socket 105 is used as a control device for locking, unlocking and separating the upper and lower molds.

[0030] Specifically, the locking rod 102 is a short cylindrical plug-in rod structure, and a telescopic contact 1021 is provided at the end of the locking rod 102 and extends outward along the diameter.

[0031] Through the above technical solution, the locking rod 102 can move freely in the locking groove 202 until the telescopic contact 1021 is inserted into the positioning hole.

[0032] Specifically, the lower mold 2 includes a mold groove 201, a positioning groove 202, a withdraw device 203 and a lower mold ventilation groove 204. The mold groove 201 is a cavity structure located inside the lower mold 2. The positioning groove 202 is arranged at the edge of the lower mold 2, and is two arc-shaped slot structures symmetrical along the center. A transverse circular through hole is provided at one end of the positioning groove 202. The withdraw device 203 is a rectangular protrusion structure on the outer side wall of the lower mold 2 arranged at the circular through hole of the positioning groove 202. The lower mold ventilation groove 204 is a plurality of divergent semicircular groove structures arranged on the top surface of the lower mold 2, which are connected to the inside of the mold groove 201.

[0033] Specifically, the withdrawer 203 includes a withdrawing cylinder 2031 and a rotation positioning groove 2032 . The withdrawing cylinder 2031 is a strong cylinder whose air outlet corresponds to the circular through hole of the locking groove 202 , and the rotation positioning groove 2032 is a rectangular groove structure arranged on one side of the withdrawer 203 .

[0034] Specifically, the rotation positioning groove 2032 and the rotation positioning rod 103 can match each other.

[0035] The above technical solution is used to control the rotation angle of the upper and lower molds during installation, thereby ensuring the degree of combination and stability during locking.

[0036] Specifically, the locking rod 102 can be inserted into the locking groove 202 , and the telescopic contact 1021 can be inserted into the circular through hole of the locking groove 202 and correspond to the retreat cylinder 2031 .

[0037] Through the above technical solution, the upper and lower molds are fixed and limited by the socket connection between the locking rod 102 and the locking groove 202, and the retreat cylinder 2031 is used as an unlocking device.

[0038] Specifically, the upper mold vent groove 104 and the lower mold vent groove 204 correspond to each other one by one after the upper and lower molds are installed and locked, and a plurality of cylindrical through-hole structures connected to the outside are formed in the side walls of the upper and lower molds.

[0039] The above technical solution can avoid defects such as water marks and pores in the mold caused by unbalanced internal air pressure during die casting.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic mold with a guide structure, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) and the lower mold (2) are cylindrical molds with the same outer diameter, and the two are connected and fixed by a mechanical structure. The upper mold (1) comprises a mold core (101), a positioning rod (102), a rotation positioning rod (103), an upper mold venting groove (104) and a socket joint (105). The mold core (101) is a shaping structural block arranged at the center of the top surface of the upper mold (1). There are two positioning rods (102) installed on both sides of the bottom of the upper mold (1). The two positioning rods (102) are located on the same diameter line. The rotation positioning rod (103) is two rectangular protrusions arranged on the side wall of the upper mold (1), and a downwardly protruding positioning rod is provided at the edge. The positioning rod structure comprises two rotating positioning rods (103) which are located outside the positioning rod (102) and are symmetrical around the central axis of the upper mold (1). The upper mold ventilation groove (104) is a plurality of divergent semicircular groove structures arranged on the bottom surface of the upper mold (1) and is connected to the surface of the mold core (101). The socket joint (105) is a joint structure arranged on the top of the upper mold (1) and is used to connect to an external power machine. The positioning rod (102) is a cylindrical short plug rod structure. A telescopic contact (1021) is provided at the end of the positioning rod (102) and extends outward along the diameter. The lower mold (2) comprises a casting groove (201), a positioning groove (202), a retreat groove (103) and a backing groove (104). The mold groove (201) is a cavity structure located inside the lower mold (2); the positioning groove (202) is arranged at the edge of the lower mold (2) and is a two-way arc-shaped slot structure symmetrical along the center; a transverse circular through hole is arranged at one end of the positioning groove (202); the withdrawing device (203) is a rectangular protruding structure arranged on the outer side wall of the lower mold (2) at the circular through hole of the positioning groove (202); the lower mold venting groove (204) is a plurality of divergent semicircular groove structures arranged on the top surface of the lower mold (2) and communicated with the inside of the mold groove (201); the withdrawing device (203) comprises a withdrawing cylinder ( The back-moving cylinder (2031) and the rotation positioning groove (2032) are respectively provided with a back-moving cylinder (2031) and a rotation positioning groove (2032), wherein the back-moving cylinder (2031) is a powerful cylinder whose air outlet corresponds to the circular through hole of the positioning groove (202), and the rotation positioning groove (2032) is a rectangular groove structure arranged on one side of the back-moving cylinder (203), wherein the positioning rod (102) can be inserted into the positioning groove (202), and the telescopic contact (1021) can be inserted into the circular through hole of the positioning groove (202) and correspond to the back-moving cylinder (2031), wherein the upper mold vent groove (104) and the lower mold vent groove (204) correspond to each other one by one after the upper and lower molds are installed and locked, and a plurality of cylindrical through hole structures connected to the outside are formed in the side walls of the upper and lower molds.

2. A plastic mold with a guide structure according to claim 1, characterized in that: The rotation positioning groove (2032) and the rotation positioning rod (103) can match each other.

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