Inverted mold structure for forming large-area smooth surface

Abstract

The utility model provides an upside-down mold structure for forming a large-area smooth surface, which comprises a panel, an upper backing plate, an upper movable mold, a lower fixed mold, an ejector plate and a bottom plate from top to bottom, an upper mold core is embedded at the bottom of the upper movable mold, a lower mold core is embedded in the middle of the lower fixed mold, and side sliding plates are arranged on two sides of the lower mold core of the lower fixed mold. The upper end faces of the sliding plates on the two sides and the lower die core form a forming groove, and forming gaps are formed between the end faces, facing each other, of the sliding plates on the two sides and the lower die core. During mold closing, the sliding plates on the two sides are close to the lower mold core, the upper mold core presses downwards to cover the forming groove for forming a main body of the steam engine boiler cover plate, and the forming gap is used for forming a handle of the steam engine boiler cover plate; during mold opening, the upper mold core is lifted up from the forming groove and drives the sliding plates on the two sides to be separated at the same time, and forming and demolding of the steam engine boiler cover plate are achieved; the inverted structure is adopted, the glue inlet point is arranged at the bottom of the steam engine boiler cover plate, glue inlet traces cannot be generated on the front face of the cover plate, and the overall structure is simple compared with the mode that ejection is conducted through multiple ejector pins.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to an inverted mold structure for molding a large-area smooth surface. 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 The steam engine boiler cover shown in the figure has a large overall area, a handle is set in the middle of the cover, and the surface of the cover is required to be smooth and without marks. The traditional mold design glue inlet is on the outer surface of the product, which will destroy the smooth outer surface of the cover. In addition, the cover has a large area and a large clamping force on the mold core. If the traditional ejector demolding method is used, more ejectors need to be set to realize the ejection and demolding of the cover, resulting in a complex overall mold structure. Therefore, a new mold structure is urgently needed to realize the molding and demolding of the steam engine boiler cover. Utility Model Content

[0003] The utility model provides an inverted mold structure with a large-area smooth surface, aiming to solve the technical problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an inverted mold structure for forming a large area of ​​smooth surface, including a panel, an upper pad, an upper movable mold, a lower fixed mold, an ejector plate and a bottom plate from top to bottom, an upper mold core is embedded in the bottom of the upper movable mold, a lower mold core is embedded in the middle of the lower fixed mold, and side slides are arranged on both sides of the lower mold core of the lower fixed mold, the upper end surfaces of the two side slides and the lower mold core form a molding groove, and the end surfaces of the two side slides facing each other form a molding gap with the lower mold core.

[0005] Furthermore, the lower mold core includes protrusions at both ends along the length direction and a connecting block connecting the two protrusions.

[0006] Furthermore, a side sliding block is installed on the lower fixed die at one side of the lower die core, and the protrusion on one side is provided with a sliding groove for the side sliding block to slide.

[0007] Furthermore, a plurality of strip-shaped grooves are formed on the upper surface of the connection block along the length direction.

[0008] Furthermore, a positioning block is provided on the end surface of one of the side slides facing the lower die core, and a positioning groove is provided on the end surface of the other side slide facing the lower die core.

[0009] Furthermore, a plurality of cooling pipes are arranged inside the side slide plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model comprises a panel, an upper pad, an upper movable mold, a lower fixed mold, an ejector plate and a bottom plate from top to bottom. An upper mold core is embedded at the bottom of the upper movable mold, a lower mold core is embedded in the middle of the lower fixed mold, and side slides are arranged on both sides of the lower mold core. The upper end faces of the two side slides and the lower mold core form a forming groove, and the end faces of the two side slides facing each other and the lower mold core form a forming gap. When the mold is closed, the two side slides are close to the lower mold core, and the upper mold core is pressed down to cover the forming groove, which is used to form the main part of the steam engine boiler cover plate, and the forming gap is used to form the handle part of the steam engine boiler cover plate; when the mold is opened, the upper mold core is lifted from the forming groove, and at the same time, the two side slides are driven to separate, so that the steam engine boiler cover plate can be formed and demolded; the inverted structure is adopted, and the glue injection point is at the bottom of the steam engine boiler cover plate, and no glue injection marks will be generated on the front of the cover plate. Compared with the method of ejecting with multiple ejectors, the overall structure is simple and the mold processing is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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.

[0013] Figure 1 It is a schematic diagram of the steam engine boiler cover structure;

[0014] Figure 2 It is a schematic diagram of the structure of the forming die of the steam engine boiler cover of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the lower die core and side slide plate of the forming die of the steam engine boiler cover plate of the utility model;

[0016] Figure 4 It is a structural schematic diagram of an upper movable mold of a forming mold for a steam engine boiler cover plate of the utility model;

[0017] Figure 5 It is an exploded schematic diagram of the lower die core and the side slide plate of the forming die of the steam engine boiler cover plate of the utility model;

[0018] Figure 6 It is a cross-sectional view of a forming die for a steam engine boiler cover plate of the utility model.

[0019] Main component symbols

[0020] 10. Panel;

[0021] 20. Upper pad;

[0022] 30. Upper movable mold; 301. Upper mold core;

[0023] 40, lower fixed die; 401, lower die core; 4011, convex block; 4012, connecting block; 402, side slide plate; 403, side slide block;

[0024] 50. Ejector plate;

[0025] 60. Bottom plate;

[0026] 70. Steam engine boiler cover; 701. Handle; 702. Through hole. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Example

[0031] like Figure 1 The steam engine boiler cover plate 70 shown has a relatively large overall area, a round hole is opened on one side of the cover plate, a handle 701 is arranged in the middle of the cover plate, and the surface of the cover plate is required to be smooth and without marks.

[0032] Reference Figure 2-6 As shown, the utility model discloses an inverted mold structure for forming a large-area smooth surface, including a panel 10, an upper pad 20, an upper movable mold 30, a lower fixed mold 40, an ejector plate 50 and a bottom plate 60 from top to bottom, an upper mold core 301 is embedded in the bottom of the upper movable mold 30, a lower mold core 401 is embedded in the middle of the lower fixed mold 40, and the lower fixed mold 40 is provided with side slides 402 on both sides of the lower mold core 401, and the upper end surfaces of the two side slides 402 and the lower mold core 401 form a molding groove, and the end surfaces of the two side slides 402 facing each other and the lower mold core 401 form a molding gap. Specifically, the lower mold core 401 includes protrusions 4011 at both ends along the length direction and a connecting block 4012 connecting the two protrusions 4011. The two side slides 402 are arranged on both sides of the lower mold core 401 along the length direction. The two side slides 402 are provided with guide holes. The upper movable mold 30 is installed with guide columns on both sides of the upper mold core 301. The guide columns pass through the guide holes. When the mold is closed, the upper movable mold 30 drives the guide columns to push the two side slides 402 toward the lower mold core 401. The upper end surfaces of the two side slides 402 and the upper end surfaces of the two protrusions 4011 form a molding groove. The upper mold core 301 covers the molding groove. Hot melt glue is injected from the glue inlet of the panel 10 into the cavity between the molding groove and the upper mold core 301 for molding the main part of the steam engine boiler cover 70. The glue injection point is on the inner surface of the cover. In this way, there is no glue injection mark on the outer surface of the product, which is smooth and traceless.

[0033] When the two side slides 402 are close to the lower mold core 401, a positioning block is set on the end face of one side slide 402 facing the lower mold core 401, and a positioning groove is set on the end face of the other side slide 402 facing the lower mold core 401. When the mold is closed, the positioning block and the positioning groove are matched and positioned, and the molding gap between the two side slides 402 and the connecting block 4012 is used to mold the handle 701. Furthermore, a plurality of strip grooves are opened on the upper surface of the connecting block 4012 along the length direction, and the strip grooves are used to mold the ribs of the handle 701 during molding. When the mold is opened, the upper movable mold 30 drives the upper mold core 301 to move upward to leave the molding groove and drives the two side slides 402 to separate, so that the product can be demoulded. Compared with the traditional method of ejecting with multiple ejector pins, the utility model has a simple structure and convenient mold processing.

[0034] Reference Figure 2-6As shown, a side slider 403 is installed on one side of the lower mold core 401 on the lower fixed mold 40, and a chute is provided on a protrusion 4011 on one side for the side slider 403 to slide. Specifically, an inclined guide column is provided above the side slider 403 at the bottom of the upper movable mold 30, and a guide hole is provided on the side slider 403. When the mold is closed, the inclined guide column drives the side slider 403 to approach the lower mold core 401 and extend into the protrusion 4011 from the chute of the protrusion 4011, so as to form a circular hole on one side of the steam engine boiler cover plate 70; when the mold is opened, the upper movable mold 30 drives the side slider 403 to leave the protrusion 4011 and exit from the circular hole.

[0035] In addition, a plurality of cooling pipes are arranged inside the side slide plate 402 . After the mold is closed for injection molding, the coolant flows from the cooling pipes to the inside of the side slide plate 402 . The coolant cools and molds the steam engine boiler cover plate 70 .

[0036] 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 flip-chip mold structure for forming a large area of ​​smooth surface, characterized in that: It includes a panel, an upper pad, an upper movable mold, a lower fixed mold, an ejector plate and a bottom plate from top to bottom. The upper mold core is embedded in the bottom of the upper movable mold, and the lower mold core is embedded in the middle of the lower fixed mold. The lower fixed mold is provided with side slides on both sides of the lower mold core. The upper end surfaces of the two side slides and the lower mold core form a molding groove, and the end surfaces of the two side slides facing each other form a molding gap with the lower mold core.

2. The flip-chip mold structure for large-area smooth surface molding according to claim 1, characterized in that: The lower mold core comprises protrusions at two ends along the length direction and a connecting block connecting the two protrusions.

3. The flip-chip mold structure for large-area smooth surface molding according to claim 2, characterized in that: A side sliding block is installed on the lower fixed die at one side of the lower die core, and a sliding groove is provided on the protrusion on one side for the side sliding block to slide.

4. The flip-chip mold structure for large-area smooth surface molding according to claim 2, characterized in that: The upper surface of the connection block is provided with a plurality of strip grooves along the length direction.

5. The flip-chip mold structure for large-area smooth surface molding according to claim 1, characterized in that: A positioning block is arranged on the end surface of one side slide plate facing the lower die core, and a positioning groove is arranged on the end surface of the other side slide plate facing the lower die core.

6. The flip-chip mold structure for large-area smooth surface molding according to claim 1, characterized in that: A plurality of cooling pipes are arranged inside the side slide plate.

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