Structure convenient for replacing identification insert in injection mold

Abstract

The utility model discloses a structure for conveniently replacing an identification insert in an injection mold, which belongs to the field of injection molds, is used for identifying the insert, and comprises a base, the bottom end of the base is connected with an ejector rod, and the ejector rod is positioned at an ejector plate of the injection mold and moves along with the ejector plate; the top end of the base is detachably connected with an identification block, a containing hole is machined in an injection molding cavity of the injection mold, and the identification block and the base are connected into a whole and located in the containing hole. According to the technical scheme, the identification block located in the injection molding cavity can be rapidly replaced, the replacement efficiency of the mold is improved, and meanwhile other problems caused by disassembly of the injection mold can be avoided.

Description

Technical Field

[0001] This application belongs to the field of injection molds. Specifically, it particularly relates to a structure for facilitating the replacement of identification inserts in an injection mold. Background Art

[0002] An injection mold generally includes a fixed mold and a moving mold. Injection cavities for realizing the injection molding of finished products are respectively processed on the contact surfaces where the fixed mold and the moving mold are closed. A ejection system is also provided inside the fixed mold. The ejection system generally includes an ejection plate (ejector pin plate), ejector pin guide rods, ejector pin return springs, etc. After the product is formed and cooled in the mold, the front and rear molds of the mold are separated and opened. The ejector mechanism - the ejector pins push the plastic product and the condensate in the runner under the drive of the injection machine's ejector rod to push out or pull out the plastic product and the condensate in the runner from the mold cavity and the runner position, so as to facilitate the next injection molding work cycle.

[0003] Refer to a mold structure for rapid replacement of identification inserts on an injection molding machine disclosed in the patent document with the Chinese patent publication number CN103831933A, and specifically disclose the following technical solution: The upper end side of the identification insert has an acute-angle socket, and the upper end top surface is an inclined surface with the same angle as the acute-angle socket. The lower end of the identification insert is installed in the fixed mold core; One end of the identification locking block is an acute-angle plug, which matches the acute-angle socket of the identification insert and is inserted into the acute-angle socket to position the identification insert. The other end of the identification locking block is locked on the fixed template by screws; When it needs to be interchanged, rotate the identification locking block 180 degrees, wedge the inclined surface of the acute-angle plug of the identification locking block with the inclined surface at the top of the identification insert, and push the identification locking block. Use the downward force converted by the inclined surface to make the identification insert move downward, and the lower end protrudes from the parting surface, and then manually take out the identification insert and replace it with an insert without identification.

[0004] Based on the prior art, the applicant believes that the following technical problems exist: First, it needs to use an identification locking block and screws to realize the replacement of the identification insert, and the identification locking block needs to pass through the fixed template to contact the identification insert and position it with the acute-angle socket, and the acute-angle socket is also located in the fixed template, which cannot judge whether the insertion is in place and stable; Second, when the identification insert needs to be replaced, the identification locking block needs to be rotated 180 degrees, and the downward force is converted through the inclined surface to make the identification insert move downward. Only after the lower end protrudes from the parting surface can the identification insert be taken out. However, the parting surface is below the top template, and certain operations still need to be performed on the top template to take out the identification insert. Summary of the Invention

[0005] The purpose of this application is to provide a structure for facilitating the replacement of identification inserts in an injection mold, which can quickly replace the identification block located in the injection cavity, improve the replacement efficiency of the mold, and at the same time avoid other problems caused by the disassembly of the injection mold.

[0006] To achieve the above object, the present application is implemented through the following technical solutions:

[0007] A structure for facilitating the replacement of an identification insert in an injection mold, including a base. A ejector rod is connected to the bottom end of the base. The ejector rod is connected to a separate ejection power mechanism or is located at the ejector plate of the injection mold and moves with the ejector plate. The top end of the base is detachably connected with an identification block. A placement hole is machined in the injection cavity of the injection mold. The identification block is integrally connected with the base and is located in the placement hole.

[0008] As one of the preferred technical solutions, a base guide block is machined on the top end of the base, and an identification block chute is machined on the bottom surface of the identification block. The base guide block is slidably connected with the identification block chute.

[0009] As one of the preferred technical solutions, a pin connection groove is machined on the base in a direction perpendicular to the base guide block, and an identification positioning hole is machined on the identification block in a direction perpendicular to the identification block chute. After the pin connection groove and the identification positioning hole are aligned, a positioning pin is inserted for connection.

[0010] As one of the preferred technical solutions, positioning beads are further arranged on the top surface of the base guide block in contact with the identification block chute.

[0011] As one of the preferred technical solutions, the top end of the ejector rod has a connection block, and the bottom end of the base has a connection groove with the same shape as the connection block. The connection block is connected with the connection groove.

[0012] As one of the preferred technical solutions, the base guide block and the identification block chute are of a dovetail groove structure.

[0013] As one of the preferred technical solutions, an identification block chamfer is machined on the bottom surface of the identification block where the identification block chute is machined.

[0014] Compared with the prior art, the beneficial effects of the present application are:

[0015] In the present application, the identification block located in the injection cavity of the injection mold is changed to a split structure and can move with the lifting plate in the injection mold, realizing the rapid replacement of the identification block in the injection mold, saving the replacement time of the identification block, improving the replacement efficiency, and avoiding other problems caused by disassembling the injection mold at the same time. Description of the Drawings

[0016] Figure 1 is the three-dimensional Figure 1 .

[0017] Figure 2 is the three-dimensional Figure 2 .

[0018] In the figure: 1. Base; 2. Pin connection groove; 3. Base guide block; 4. Positioning bead; 5. Identification block A; 6. Identification block B; 7. Positioning pin; 8. Connection groove; 9. Ejector rod; 10. Identification block sliding groove; 11. Identification positioning hole; 12. Connection block; 13. Identification block chamfer. Specific embodiments

[0019] The technical solution of the present application will be further described and explained below in conjunction with the accompanying drawings and embodiments.

[0020] Embodiment 1

[0021] As Figures 1 to 2 shown, the structure for facilitating the replacement of the identification insert in the injection mold includes a base 1 and an identification block located in the injection cavity of the injection mold. The identification block includes the original identification block A5 and the identification block B6 to be replaced. The base 1 and the identification block are detachably connected, and the detachable method is by means of snap connection or connection with a connecting piece. Identification patterns are provided on the identification block.

[0022] The bottom of the base 1 is connected with an ejector rod 9. The ejector rod 9 is located on the ejector plate of the injection mold and can move along with the ejector plate. A separate ejector power mechanism for the ejector rod can also be provided at the fixed mold (bottom mold) of the injection mold, such as a jacking cylinder or other devices capable of linear drive.

[0023] Placement holes are machined at the positions where the identification block and the base 1 are installed in the injection cavity. The installation clearance between the placement holes and the identification block and the base 1 should be such that it does not affect the injection molding in the injection cavity.

[0024] Embodiment 2

[0025] Continue to refer to Figures 1 to 2 , the structure for facilitating the replacement of the identification insert in the injection mold. The top surface of the base 1 is a base guide block 3. The bottom surfaces of the identification block A5 and the identification block B6 in the identification block are both machined with identification block sliding grooves 10; the base guide block 3 and the identification block sliding grooves 10 are slidably connected as a whole.

[0026] The base 1 is machined with a pin connection groove 2 penetrating the base 1 in a direction perpendicular to the base guide block 3. The identification block A5 and the identification block B6 are machined with identification positioning holes 11 penetrating the identification block A5 and the identification block B6 in a direction perpendicular to the identification block sliding grooves 10. After the identification block A5 and the identification block B6 are slidably connected along the base guide block 3 through the identification block sliding grooves 10, the pin connection groove 2 and the identification positioning holes 11 are aligned and a positioning pin 7 is inserted for connection.

[0027] The structures and connection relationships of the remaining parts are the same as those described in Embodiment 1.

[0028] Embodiment 3

[0029] Continue to refer to Figures 1 to 2 a structure in an injection mold for facilitating the replacement of an identification insert. A positioning bead 4 is machined on the top surface of the base 1, and a connecting groove 8 is machined on the bottom surface of the base 1. The top end of the ejector rod 9 has a connecting block 12 with the same shape as the connecting groove 8 and capable of being snap-fitted with the connecting groove 8. On the bottom surfaces of the identification block A5 and the identification block B6, that is, at the bottom corner positions of the bottom surfaces where the identification block sliding grooves 10 are machined, identification block chamfers 13 are machined.

[0030] The structures and connection relationships of the remaining parts are the same as those described in Embodiment 2.

[0031] Based on the above embodiments, the following paragraphs are used to continue to describe in detail the technical features involved and the functions and roles played by these technical features in the technical solution of the present application, so as to help those skilled in the art fully understand the technical solution and reproduce it.

[0032] In the present application, the injection mold should include an upper mold and a lower mold. Both the upper mold and the lower mold have injection cavities. Generally, the lower mold should have an ejector plate, and the ejector plate is connected to the ejector pins of the lower mold to complete the ejection of the finished product molded in the injection cavity. The injection cavity includes a female mold core located in the upper mold and a male mold core located in the lower mold.

[0033] Based on the structure of the above injection mold plate, in order to achieve injection molding of different identifications on the same product, identification blocks that move with the ejector plate can be provided in the injection cavity of the lower mold, including identification block A5 and identification block B6. To enable those skilled in the art to fully understand the replacement process, in the following text, it is defaulted that identification block A5 is the original identification block and identification block B6 is the identification block waiting to be replaced.

[0034] When the upper mold and the lower mold are in the mold-opening state, when the lifting plate of the lower mold moves, the lifting plate can drive the base 1 and the identification block A5 to move upward through the ejector rod 9 until the base 1 and the identification block A5 extend out of the bottom surface of the injection cavity of the lower mold, and the height should be such that it is convenient for the base 1 and the identification block A5 to be disengaged.

[0035] By using a tool, the positioning pin 7 is disengaged from the pin connection groove 2 and the identification positioning hole 11. After the positioning pin 7 is disengaged from the above structure, the identification block A5 is slid along the base guide block 3 by means of a manual tool or manually, so as to disengage the identification block A5 from the base guide block 3.

[0036] After the to-be-identified block A5 is disengaged from the base guide block 3, the identification block B6 to be replaced is installed on the base guide block 3 through the identification block chute 10. After the pin connection groove 2 in the base guide block 3 is aligned with the identification positioning hole 11 on the identification block chute 10, the positioning pin 7 is inserted into the identification positioning hole 11 and the pin connection groove 2 again by means of a hand tool or manually. After the above structure is connected, the lifting plate of the lower mold drives the ejector rod 9 to return to the initial state, and the ejector rod 9 drives the base 1 and the identification block B6 to return to the initial state, that is, the base 1 drives the base 1 and the identification block B6 to return to the placement groove. In order to achieve a better guiding effect during the process of the identification block A5 and the identification block B6 following the base 1 to move downward to reset, identification block chamfers 13 are machined at the bottom corner positions of the identification block A5 and the identification block B6.

[0037] After the above steps are completed, the replacement of the identification insert of the injection mold can be completed. Compared with the original identification insert being integrated with the injection cavity of the lower mold and requiring the disassembly of the lower mold, the time for replacing the identification insert is saved, the replacement efficiency is improved, and other problems caused by the disassembly of the mold are avoided.

[0038] Finally, although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A structure for facilitating replacement of identification inserts in an injection mold, characterized in that: The invention comprises a base (1), the bottom end of the base (1) is connected to a push rod (9), the push rod (9) is connected to a separate ejection power mechanism or is located at an ejection plate of an injection mold and moves with the ejection plate; the top end of the base (1) is connected to an identification block in a detachable manner, a placement hole is machined in the injection cavity of the injection mold, and the identification block is connected to the base (1) as a whole and is located in the placement hole; The top of the base (1) is processed with a base guide block (3), the bottom surface of the identification block is processed with an identification block slide groove (10), and the base guide block (3) is slidably connected with the identification block slide groove (10); The base (1) is processed with a pin connection groove (2) in a direction perpendicular to the base guide block (3), and the identification block is processed with an identification positioning hole (11) in a direction perpendicular to the identification block slide groove (10). After the pin connection groove (2) and the identification positioning hole (11) are aligned, a positioning pin (7) is inserted to connect them; The base guide block (3) is also provided with a positioning bead (4) on the top surface that contacts the identification block slide groove (10).

2. The structure for facilitating replacement of identification inserts in an injection mold according to claim 1, characterized in that: The top end of the top rod (9) is provided with a connection block (12), the bottom end of the base (1) is provided with a connection groove (8) of the same shape as the connection block (12), and the connection block (12) is connected to the connection groove (8).

3. The structure for facilitating replacement of identification inserts in an injection mold according to claim 2, characterized in that: The base guide block (3) and the identification block slide groove (10) are dovetail groove structures.

4. The structure for facilitating replacement of identification inserts in an injection mold according to claim 2, characterized in that: The identification block is processed with an identification block chamfer (13) on the bottom surface where the identification block slide groove (10) is processed.

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