Cylinder forming die

Abstract

The utility model provides a cylinder forming die which comprises a panel, an upper die plate, a middle die plate, a lower die plate and a base, a forming insert is arranged in the upper die plate, a forming groove is formed in the forming insert, a die core is arranged on the middle die plate, a forming hole is formed in the die core, a die core is arranged on the lower die plate, and the base comprises a top plate. The ejector rod penetrates through the lower die plate in an upward sliding mode to be connected with the middle die plate. A side pulling mechanism is arranged on one side of the mold core of the middle mold plate, the side pulling mechanism comprises a side sliding block, and one end of the side sliding block penetrates through the mold core in a sliding manner. During mold closing, the upper mold plate, the middle mold plate and the lower mold plate are closed, the mold core penetrates through the forming hole to be arranged in the forming groove, a cavity among the mold core, the mold core and the forming insert is used for forming a cylinder, the side sliding block abuts against the side face of the mold core and is used for forming a button hole of the cylinder, and during mold opening, the upper mold plate and the middle mold plate are separated, and meanwhile the side sliding block retreats from the button hole. The top plate pushes the middle mold plate upwards to push upwards, the mold core is pushed to push the product to be separated from the mold core, and forming and demolding of the cylinder are achieved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a cylinder forming mold. Background Art

[0002] Moulds are tools used to make shaped products. Products of different shapes can be made by using different shapes of moulds, such as Figure 5 The outer surface of the cylinder shown in the figure is required to be smooth and without any marks. There is a button hole on the side of the cylinder. After injection molding, traditional ejector cannot be used. Therefore, how to realize the molding and demolding of the cylinder is an urgent problem to be solved. Utility Model Content

[0003] The utility model provides a cylinder forming die, aiming to solve the technical problem of how to realize the forming and demoulding of the cylinder.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a cylindrical forming mold, comprising a panel, an upper template, a middle template, a lower template, and a base from top to bottom, a forming insert is arranged in the upper template, the forming insert has a forming groove with an opening facing downward, the middle template is provided with a mold core, the mold core has a forming hole, the lower template is provided with a core, the base includes a top plate, a plurality of push rods are installed on the top plate, the push rods can slide upward through the lower template to connect to the middle template; the middle template is provided with a side withdrawal mechanism on one side of the mold core, the side withdrawal mechanism includes a side slider, one end of the side slider can slide through the mold core.

[0005] Furthermore, a spiral external cooling groove is provided on the outer side surface of the molding insert.

[0006] Furthermore, the core comprises an inner core and an outer cover, and a spiral inner cooling groove is provided on the outer side surface of the inner core.

[0007] Furthermore, a ejector rod is further provided on the top plate, and the ejector rod can slide upward through the lower template and the core.

[0008] Furthermore, a glue inlet hole is opened at the bottom of the molding groove.

[0009] Furthermore, the panel, the upper template, the middle template, and the lower template are respectively wrapped with insulation layers.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The utility model comprises a panel, an upper template, a middle template, a lower template and a base from top to bottom. A forming insert is arranged in the upper template, the forming insert has a forming groove with an opening facing downward, a mold core is arranged in the middle template, the mold core has a forming hole, the lower template has a core, the base comprises a top plate, a plurality of push rods are mounted on the top plate, the push rods can slide upward through the lower template to connect to the middle template; the middle template is provided with a side withdrawal mechanism on one side of the mold core, the side withdrawal mechanism comprises a side slider, one end of the side slider can slide through the mold core. When the mold is closed, the upper template, the middle template and the lower template are closed, the core passes through the forming hole and is placed in the forming groove, the cavity between the core and the mold core and the forming insert is used to form a cylinder, the side slider abuts against the side of the core, and is used to form a button hole of the cylinder. When the mold is opened, the upper template and the middle template are separated and the side slider withdraws from the product button hole, the top plate pushes the push rod upward to push the middle template upward, pushes the mold core and pushes the product out of the core, thus realizing the molding and demoulding of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 This is a schematic diagram of the structure of the forming die for the cylinder of the utility model;

[0014] Figure 2 It is a cross-sectional view of the forming die of the cylinder of the utility model;

[0015] Figure 3 This is an exploded view of the cylinder forming mold of the utility model

[0016] Figure 4 This is an exploded view from another angle of the cylinder forming die of the utility model;

[0017] Figure 5 Schematic diagram of the cylindrical structure.

[0018] Description of main component symbols

[0019] 10. Panel;

[0020] 20, upper template; 201, molding insert; 2011, molding groove; 2012, external cooling groove;

[0021] 30, middle template; 301, mold core; 302, side forming block;

[0022] 40, lower mold plate; 401, core; 402, inner cooling groove;

[0023] 50, base; 501, top plate; 502, ejector rod; 503, ejector rod;

[0024] 60. Cylinder; 601. Button hole; 602. Step. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] Example

[0029] Reference Figure 5The outer surface of the cylinder 60 shown is required to be smooth and without marks, a step 602 is provided on the circumferential lower side of the cylinder, and a button hole 601 is opened on the side of the cylinder 60.

[0030] Reference Figure 1-4 As shown, the utility model discloses a cylindrical forming mold, including a panel 10, an upper template 20, a middle template 30, a lower template 40, and a base 50 from top to bottom. A forming insert 201 is arranged in the upper template 20, and the forming insert 201 has a forming groove 2011 with an opening facing downward. The middle template 30 is provided with a mold core 301, and the mold core 301 has a forming hole. The lower template 40 is provided with a core 401; when the mold is closed, the upper template 20, the middle template 30 and the lower template 40 are closed, and the core 401 is placed in the forming groove 2011 through the forming hole, and hot melt glue is fed from the glue inlet of the panel 10. The molding groove 2011 has a glue feeding hole at the bottom. Glue is fed in a disc shape from the top of the core 401 and then to the core 401 and the side wall of the molding groove 2011 and the side wall of the molding hole to form the main body of the cylinder 60. The use of the disc-shaped glue feeding method from the top will not form glue feeding marks on the side wall of the cylinder 60, so that the side surface of the cylinder 60 is smooth and traceless.

[0031] Furthermore, the outer side of the molding insert 201 is provided with a spiral outer cooling groove 2012. The spiral outer cooling groove 2012 can evenly cool the outer side of the cylinder 60. The core 401 includes an inner core and an outer cover. The outer side of the inner core is provided with a spiral inner cooling groove 402. The spiral inner cooling groove 402 can evenly cool the interior of the cylinder 60. The use of internal and external spiral cooling grooves has a good cooling effect.

[0032] Reference Figure 2-3 As shown, the middle mold plate 30 is provided with a side withdrawal mechanism on one side of the mold core 301. The side withdrawal mechanism includes a side slider, one end of which can slide through the mold core 301. Specifically, when the mold is closed, the side slider slides through the mold core 301 and abuts against the core 401 to form the button hole 601 on the side of the cylinder 60.

[0033] Reference Figure 1-2As shown, the base 50 includes a top plate 501, on which are mounted a plurality of push rods 502, which can slide upward through the lower mold plate 40 to connect to the middle mold plate 30. Specifically, when the mold is opened, the upper mold plate 20 and the middle mold plate 30 are separated. An inclined guide rod is provided at the bottom of the upper mold plate 20, which can slide through the side slider. The upward movement of the inclined guide rod of the upper mold plate 20 simultaneously drives the side slider to withdraw from the button hole 601 of the cylinder 60. The cylinder 60 rests on the core 401. The top plate 501 pushes the middle mold plate 30 upward to push the step 602, causing the cylinder 60 to fall off the core 401, thereby achieving product demoulding. Furthermore, a push rod 503 is further provided on the top plate 501, which can slide upward through the lower mold plate 40 and the core 401. After the glue is injected, there will be excess material heads on the upper end surface of the core 401 , and the ejector rod 503 pushes the material heads upward to remove them from the upper end of the core 401 , thereby automatically removing the material heads remaining on the upper end of the core 401 .

[0034] In addition, the panel 10, upper template 20, middle template 30, and lower template 40 are respectively wrapped with insulation layers, and the insulation layers are wrapped around the outer surface of the mold to prevent the temperature of the hot melt adhesive from dropping during injection, resulting in insufficient injection and uneven product thickness.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cylindrical forming die, characterized in that: It includes a panel, an upper template, a middle template, a lower template, and a base from top to bottom. A molding insert is arranged in the upper template, and a molding groove with an opening facing downward is opened in the molding insert. A mold core is arranged in the middle template, and a molding hole is opened in the mold core. A core is arranged in the lower template. The base includes a top plate, and a plurality of ejector rods are installed on the top plate. The ejector rods can slide upward through the lower template to connect the middle template. The middle template is provided with a side drawer mechanism on one side of the mold core, and the side drawer mechanism comprises a side slide block, and one end of the side slide block can slide through the mold core.

2. The cylindrical forming die according to claim 1, characterized in that: The outer side surface of the molding insert is provided with a spiral outer cooling groove.

3. The cylindrical forming die according to claim 1, characterized in that: The core comprises an inner core and an outer cover, and a spiral inner cooling groove is provided on the outer side of the inner core.

4. The cylindrical forming die according to claim 1, characterized in that: The top plate is further provided with a push rod, and the push rod can slide upward through the lower mold plate and the core.

5. The cylindrical forming die according to claim 1, characterized in that: A glue inlet hole is provided at the bottom of the molding groove.

6. The cylindrical forming die according to claim 1, characterized in that: The panel, the upper template, the middle template and the lower template are respectively wrapped with insulation layers.

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