A double screw thread strong demolding die

Abstract

The utility model provides a double screw thread strong demolding mold, including a panel, an upper pad, an upper movable mold, a push plate, a lower fixed mold, an ejector plate and a base, wherein an upper mold core is embedded in the upper movable mold, an upper molding groove is opened on the bottom end face of the upper mold core, a molding column is arranged at the bottom of the upper molding groove, a core is embedded in the lower fixed mold, an upper sink groove and a lower sink groove are respectively opened at the upper and lower ends of the core, a guide hole is opened in the core, a molding needle is slidably arranged in the guide hole, a first molding thread is opened at the upper end of the molding needle, a lower end is placed in the sink groove and a limit block is arranged, an ejector rod is installed on the ejector plate, and the upper end of the ejector rod is connected to the push plate. When the mold is opened, the upper movable mold is separated from the push plate, the ejector plate pushes the push plate to push the urine cup cover, the upper end of the molding needle moves upward to the upper sink groove along with the urine cup cover, the molding needle stops moving, and the push plate that continues to push pushes the urine cup cover to separate from the upper end of the molding needle, the protruding portion has a space for deformation, and then the urine cup cover is separated from the first molding thread of the molding needle, so as to avoid the scrapping of the product caused by the protruding portion being pulled off.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a double screw thread strong demolding mold. Background Art

[0002] The mold is a tool used to make molded products. Different shapes of molds are used to make products of different shapes, such as Figure 1-2 The urine cup cover shown in the figure has an internal thread on the inner side thereof, the urine cup cover extends to one side to form a circular groove, a protrusion is arranged at the bottom of the circular groove, and a threaded hole is arranged on the protrusion to penetrate the circular groove. The urine cup cover is demoulded by a strong demoulding method after molding. Because the threaded hole is arranged on the protrusion at the bottom of the circular groove, the protrusion is easily broken when the urine cup is ejected, resulting in the scrapping of the urine cup cover. Therefore, how to realize the demoulding of the protrusion at the bottom of the circular groove of the urine cup cover is an urgent problem to be solved. Utility Model Content

[0003] The utility model provides a double-screw strong demoulding mold, aiming to solve the technical problem of how to realize the demoulding of the protruding part at the bottom of the circular groove of the urine cup cover.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a double screw thread strong demolding mold, comprising a panel, an upper pad, an upper movable mold, a push plate, a lower fixed mold, an ejector plate and a base from top to bottom, the upper movable mold is embedded with an upper mold core, the bottom end surface of the upper mold core is provided with an upper molding groove, the bottom of the upper molding groove is provided with a molding column, the push plate is embedded with a middle mold core, the lower fixed mold is embedded with a core, one end of the core is fixed to the lower fixed mold, and the other end can slidably pass through the push plate and the middle mold core, the upper and lower ends of the core are respectively provided with an upper sinking groove and a lower sinking groove, a guide hole penetrating the upper sinking groove and the lower sinking groove is provided in the core, a molding needle can be slidably provided in the guide hole, the upper end of the molding needle is provided with a first molding thread, the lower end is placed in the sinking groove and a limit block is provided, the limit block can move up and down along the sinking groove, and a plurality of ejector rods are installed on the ejector plate, and the upper ends of the ejector rods can slidably pass through the lower fixed mold to connect the push plate.

[0005] Furthermore, the lower fixed mold is further provided with a return spring at the bottom of the core, and the upper end of the return spring presses against the limit block.

[0006] Furthermore, a second molding thread is formed on the upper end of the core.

[0007] Furthermore, a circular convex ring is further arranged at the bottom of the upper molding groove, and a circular groove is opened on the upper end surface of the core.

[0008] Furthermore, a plurality of anti-slip grooves are axially opened on the inner side wall of the upper forming groove.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model has a simple structure and a reasonable and ingenious design of a double screw thread strong demolding mold. The utility model comprises a panel, an upper pad, an upper movable mold, a push plate, a lower fixed mold, an ejector plate and a base from top to bottom. The upper movable mold is embedded with an upper mold core, an upper molding groove is formed on the bottom end surface of the upper mold core, a molding column is arranged at the bottom of the upper molding groove, a middle mold core is embedded on the push plate, a core is embedded in the lower fixed mold, one end of the core is fixed to the lower fixed mold, and the other end can slide through the push plate and the middle mold core, an upper sinking groove and a lower sinking groove are respectively formed at the upper and lower ends of the core, a guide hole penetrating the upper sinking groove and the lower sinking groove is formed in the core, a molding pin can be slidably arranged in the guide hole, a first molding thread is formed on the upper end of the molding pin, a limit block is arranged on the lower end of the molding pin, the limit block can move up and down along the sinking groove, a plurality of ejector rods are arranged on the ejector plate, and the upper ends of the ejector rods can slide through the lower fixed mold and connect the push plate. When the mold is opened, the upper movable mold is separated from the push plate, and the ejector plate pushes the push plate to push the urine cup cover upward. The upper end of the molding needle used to mold the threaded hole of the protruding part of the urine cup cover first moves upward to the upper sink groove with the urine cup cover. After the molding needle moves upward a predetermined distance, it stops moving under the action of the limit block, and the continuously pushed push plate pushes the urine cup cover to separate from the upper end of the molding needle. First, the protrusion and the molding needle are moved from the guide hole to the upper sink groove together to allow the protrusion to have space for deformation, and then the urine cup cover is separated from the molding needle to avoid the protrusion being forcibly separated and pulled off, resulting in the product being scrapped. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 paying creative work.

[0012] Figure 1 It is a schematic diagram of the urine cup cover structure;

[0013] Figure 2 This is a schematic diagram of the structure of the urine cup cover from another angle;

[0014] Figure 3 This is a schematic diagram of the structure of the double-thread strong stripping die of the utility model;

[0015] Figure 4 This is a schematic diagram of the lower fixed mold structure of the double-screw strong demolding mold of the utility model;

[0016] Figure 5 It is a schematic diagram of the upper movable mold structure of the double screw thread strong demolding mold of the utility model;

[0017] Figure 6 It is a cross-sectional view of the push plate, lower fixed die and ejector plate of the double-screw strong demolding die of the utility model;

[0018] Figure 7 This is a cross-sectional view of the core of the double-thread strong demolding die of the utility model;

[0019] Figure 8 The utility model is a schematic diagram of the structure of a forming needle of a double-screw strong stripping die.

[0020] Main component symbols

[0021] 10. Panel;

[0022] 20. Upper pad;

[0023] 30, upper movable mold; 301, upper mold core; 3011, upper molding groove; 3012, molding column; 3013, anti-slip groove;

[0024] 40, push plate; 401, middle mold core;

[0025] 50, lower fixed die; 501, return spring;

[0026] 51, core; 511, second forming thread; 512, upper sink groove; 513, lower sink groove; 514, guide hole; 515, forming needle; 5151, first forming thread; 5152, limit block;

[0027] 60, ejector plate; 601, ejector rod;

[0028] 70. Base;

[0029] 80. urine cup cover; 801. internal thread; 802. protrusion; 803. threaded hole; 804. circular groove; 805. anti-slip stripes. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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 making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model 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 utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] Example

[0034] like Figure 1-2 The urine cup cover 80 shown has an internal thread 801 circumferentially formed on the inner side and an anti-slip stripe 805 on the outer side. The urine cup cover 80 extends to one side to form a circular groove 804 . A protrusion 802 is provided at the bottom of the circular groove 804 . The protrusion 802 has a threaded hole 803 penetrating the circular groove 804 .

[0035] Reference Figure 3-7As shown, the utility model discloses a double screw thread strong demolding die, comprising a panel 10, an upper pad 20, an upper movable die 30, a push plate 40, a lower fixed die 50, an ejector plate 60 and a base 70 from top to bottom, the upper movable die 30 is embedded with an upper die core 301, an upper molding groove 3011 is opened on the bottom end surface of the upper die core 301, a molding column 3012 is arranged at the bottom of the upper molding groove 3011, a middle die core 401 is embedded on the push plate 40, a core 51 is embedded in the lower fixed die 50, and a core 5 One end is fixed to the lower fixed mold 50, and the other end can slide through the push plate 40 and the middle mold core 401. The upper and lower ends of the core 51 are respectively provided with an upper sinking groove 512 and a lower sinking groove 513. Specifically, when the mold is closed, the upper molding groove 3011 covers the upper end of the core 51. The upper end of the core 51 is provided with a second molding thread 511. The second molding thread 511 is used to mold the internal thread 801 of the inner wall of the urine cup cover 80. The upper molding groove 3011 is used to mold the main part of the urine cup cover 80. The molding column 3012 is placed in the upper sinking groove 512 to mold the circular groove 804 of the urine cup cover 80; a circular convex ring is further provided at the bottom of the upper molding groove 3011, and a circular groove is opened on the upper end surface of the core 51. After the mold is closed, the circular convex ring is placed in the circular groove to mold the ribs on the main body of the urine cup cover 80. Furthermore, a plurality of anti-skid grooves 3013 are axially opened on the inner side wall of the upper molding groove 3011 , and the anti-skid grooves 3013 are used to mold the anti-skid stripes 805 on the outer side of the urine cup cover 80 .

[0036] Reference Figure 3-8As shown, a guide hole 514 penetrating the upper sinking groove 512 and the lower sinking groove 513 is provided in the core 51, and a molding needle 515 is slidably arranged in the guide hole 514. The upper end of the molding needle 515 is provided with a first molding thread 5151, and the lower end is placed in the sinking groove 513 and provided with a limit block 5152. The limit block 5152 can move up and down along the sinking groove 513. Specifically, when the mold is closed, the molding needle 515 sinks into the guide hole 514, and the corresponding limit block 5152 The molding pin 515 is placed on the side of the lower sinking groove 513 close to the lower fixed mold 50, and the molding column 3012 is placed in the upper sinking groove 512. The gap between the upper end of the molding pin 515 and the guide hole 514 is used for molding the protrusion 802. The first molding thread 5151 is used for molding the threaded hole 803 of the protrusion 802 connected to the circular groove 804. When the mold is opened, the upper movable mold 30 is separated from the push plate 40, and a plurality of ejector rods 601 are installed on the ejector plate 60. The upper end of the ejector rod 601 can slide through the mold. The push plate 40 is connected to the lower fixed mold 50, and the ejector plate 60 pushes the push plate 40 through the ejector rod 601 to push the main part of the urine cup cover 80 upward, so that the internal thread 801 of the urine cup cover 80 is separated from the second molding thread 511 of the core 51, and the upper end of the molding needle 515 used to mold the threaded hole 803 of the protruding part 802 of the urine cup cover 80 moves upward with the urine cup cover 80. The movement is stopped under the action of the limit block 5152, and the continuously pushed push plate 40 pushes the urine cup cover 80 to disengage from the first molding thread 5151 at the upper end of the molding needle 515. First, the protrusion 802 and the molding needle 515 are allowed to go from the guide hole 514 to the upper sink 512 together, so that the protrusion 802 has space for deformation, and then the urine cup cover 80 is disengaged from the first molding thread 5151 of the molding needle 515 to avoid the protrusion 802 being forcibly pulled off and causing the product to be scrapped.

[0037] Furthermore, the lower fixed mold 50 is further provided with a return spring 501 at the bottom of the core 51 , and the upper end of the return spring 501 presses against the limit block 5152 . When the mold is opened, the return spring 501 assists in pushing the molding needle 515 to move upward along the guide hole 514 .

[0038] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double screw thread strong demolding die, characterized in that: The invention comprises a panel, an upper pad, an upper movable mold, a push plate, a lower fixed mold, an ejector plate and a base from top to bottom, wherein the upper movable mold is embedded with an upper mold core, the bottom end surface of the upper mold core is provided with an upper molding groove, the bottom of the upper molding groove is provided with a molding column, the push plate is embedded with a middle mold core, the lower fixed mold is embedded with a core, one end of the core is fixed to the lower fixed mold, and the other end can slidably pass through the push plate and the middle mold core, the upper and lower ends of the core are respectively provided with an upper sinking groove and a lower sinking groove, a guide hole penetrating the upper sinking groove and the lower sinking groove is provided in the core, a molding pin can be slidably provided in the guide hole, the upper end of the molding pin is provided with a first molding thread, the lower end is placed in the sinking groove and a limit block is provided, the limit block can move up and down along the sinking groove, and a plurality of ejector rods are installed on the ejector plate, and the upper ends of the ejector rods can slidably pass through the lower fixed mold and connect the push plate.

2. The double screw thread strong demolding die according to claim 1, characterized in that: The lower fixed mold is further provided with a return spring at the bottom of the core, and the upper end of the return spring presses against the limit block.

3. The double screw thread strong demolding die according to claim 1, characterized in that: The upper end of the core is provided with a second molding thread.

4. The double screw thread strong demolding die according to claim 1, characterized in that: A circular convex ring is further arranged at the bottom of the upper molding groove, and a circular groove is opened on the upper end surface of the core.

5. The double screw thread strong demolding die according to claim 1, characterized in that: The inner side wall of the upper forming groove is axially provided with a plurality of anti-slip grooves.

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