CN211614268U

CN211614268U - Lower die structure and forming die

Info

Publication number: CN211614268U
Application number: CN201922258598.5U
Authority: CN
Inventors: 陈健; 吴振宙; 陈祖全
Original assignee: Yaham Optoelectronics Co ltd
Current assignee: SHENZHEN YAHAM OPTOELECTRONICS CO Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-02
Anticipated expiration: 2029-12-16

Abstract

The utility model belongs to the technical field of mould former, especially, relate to a lower die structure and forming die. The lower die structure comprises: the lower die base is of a plate-shaped structure and is provided with an upper plate edge arranged upwards, a lower plate edge arranged downwards, a left plate edge arranged towards the left and a right plate edge arranged towards the right, the lower die base is provided with two transverse sliding chutes arranged along the transverse direction of the lower die base along the extending path and two longitudinal sliding chutes arranged along the longitudinal direction of the lower die base along the extending path, one transverse sliding chute penetrates through the upper plate edge, the other transverse sliding chute penetrates through the lower plate edge, one longitudinal sliding chute penetrates through the left plate edge, and the other longitudinal sliding chute penetrates through the right plate edge; and the sliding mechanism comprises two longitudinal sliding block assemblies and two transverse sliding block assemblies, one ends of the two transverse sliding block assemblies are respectively arranged in the two transverse sliding grooves in a sliding mode, and one ends of the two longitudinal sliding block assemblies are respectively arranged in the two longitudinal sliding grooves in a sliding mode. The utility model discloses guarantee the plane degree of product, improved the yield of product.

Description

Lower die structure and forming die

Technical Field

The utility model belongs to the technical field of mould former, especially, relate to a lower die structure and forming die.

Background

In recent years, with the continuous development of the LED display screen, the die-cast aluminum display screen is widely applied to the industries of stage, commercial performance, advertisement, exhibition and the like, and the die-cast aluminum display screen is a main application of the LED display screen in the stage instant dynamic display and the colorful background of the architectural drawings, so as to enrich and increase stage elements.

The LED display screen develops from the initial sheet metal box body to the die-casting aluminum box body through the recent years, the weight is more and more light, the structure is more and more reasonable, the precision is also higher, and seamless splicing can be basically realized.

However, in the conventional die for die-casting, an upper die and a lower die are generally designed to be independent and integrated, and the upper die and the lower die are clamped to form a product. When the formed product is subjected to demolding, the flatness of the product is affected by the inner wall of the forming mold cavity, so that the product is unqualified in flatness and the reject ratio is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lower die structure aims at solving the problem of how to guarantee the plane degree of product and improve the product yield.

The utility model provides a lower die structure for with last die structure cooperation to the shaping goes out the product, wherein, it has the last die cavity that supplies product compression molding to go up die structure, lower die structure includes:

the lower die base is of a plate-shaped structure and is provided with an upper plate edge arranged upwards, a lower plate edge arranged downwards, a left plate edge arranged towards the left and a right plate edge arranged towards the right, the lower die base is provided with two transverse sliding chutes arranged along the transverse direction of the lower die base along the extending path and two longitudinal sliding chutes arranged along the longitudinal direction of the lower die base along the extending path, one transverse sliding chute penetrates through the upper plate edge, the other transverse sliding chute penetrates through the lower plate edge, one longitudinal sliding chute penetrates through the left plate edge, and the other longitudinal sliding chute penetrates through the right plate edge; and

the sliding mechanism comprises two longitudinal sliding block assemblies and two transverse sliding block assemblies, one ends of the two transverse sliding block assemblies are respectively arranged in the two transverse sliding grooves in a sliding mode, and one ends of the two longitudinal sliding block assemblies are respectively arranged in the two longitudinal sliding grooves in a sliding mode;

the lower die base, the two longitudinal sliding block assemblies and the two transverse sliding block assemblies jointly form a lower die cavity in press fit with the upper die cavity die, and the other ends of the two longitudinal sliding block assemblies and the other ends of the two transverse sliding block assemblies are abutted to the side wall of the upper die cavity.

The technical effects of the utility model are that: through set up a plurality of horizontal slider assemblies and vertical slider assembly on the lower die base, when the product demolding, each horizontal slider assembly and each vertical slider assembly all can the lateral sliding to make things convenient for the product demolding and avoid causing the extrusion to the product surface, thereby guaranteed the plane degree of product, improved the yield of product.

Drawings

Fig. 1 is an exploded view of a molding die provided in an embodiment of the present invention;

fig. 2 is a partially enlarged view of fig. 1 at a.

FIG. 3 is an exploded view of the lower die structure of FIG. 1;

fig. 4 is a partial enlarged view at B of fig. 3;

FIG. 5 is a schematic view of the lower die structure of FIG. 1 forming a product;

FIG. 6 is a schematic structural view of the upper die structure of FIG. 1;

FIG. 7 is a cross-sectional view of a lower die structure in one embodiment of FIG. 1;

fig. 8 is a partial enlarged view at C of fig. 7;

FIG. 9 is a cross-sectional view of a lower die structure in another embodiment of FIG. 1;

fig. 10 is a partial enlarged view of fig. 9 at D.

The correspondence between reference numbers and names in the drawings is as follows:

200. forming a mold; 101. an upper die structure; 100. a lower die structure; 102. a lower mold cavity; 10. a lower die holder; 11. upper plate edges; 12. lower plate edges; 13. a left plate edge; 14. a right plate edge; 21. a transverse slider assembly; 22. a longitudinal slide block assembly; 40. an insert; 41. embedding blocks; 30. an airway; 31. an air bag; 32. an air charging nozzle; 43. embedding a positioning column; 42. embedding the positioning holes; 111. a transverse chute; 112. a longitudinal chute; 211. a lateral side block; 212. a transverse angular position slider; 216. a transverse positioning groove; 214. a transverse angular position positioning block; 213. an air tap positioning block; 2131. an air tap seat block; 2132. an air tap slider; 2133. positioning holes of the air faucet; 2134. an air tap positioning groove; 215. an air tap positioning column; 221. a longitudinal angular position positioning block; 226. a longitudinal positioning groove; 222. a longitudinal angular slide block; 223. a handle slider; 2231. a first half slider; 2232. a second half slider; 2233. a handle chute; 219. a transverse limiting groove; 104. an upper die cavity; 103. producing a product;

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "vertical", "parallel", "bottom", "angle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship.

Referring to fig. 1 to 3, an embodiment of the present invention provides a lower mold structure 100, which is used to cooperate with an upper mold structure 101 to form a product 103. Referring to fig. 4 to 5, the upper mold structure 101 has an upper mold cavity 104 for molding a product 103. The lower die structure 100 includes a lower die base 10 and a sliding mechanism. The lower die holder 10 is of a plate-shaped structure and is provided with an upper plate edge 11 arranged upwards, a lower plate edge 12 arranged downwards, a left plate edge 13 arranged towards the left side and a right plate edge 14 arranged towards the right side, the lower die holder 10 is provided with two transverse sliding grooves 111 arranged along the transverse direction of the lower die holder along an extending path and two longitudinal sliding grooves 112 arranged along the longitudinal direction of the lower die holder along the extending path, one of the transverse sliding grooves 111 penetrates through the upper plate edge 11, the other transverse sliding groove 111 penetrates through the lower plate edge 12, one of the longitudinal sliding grooves 112 penetrates through the left plate edge 13, and the other longitudinal sliding groove 112 penetrates through the right plate edge 14. Alternatively, the transverse sliding grooves 111 and the longitudinal sliding grooves 112 are discontinuously arranged, that is, the transverse sliding grooves 111 are intermittently arranged along the transverse direction of the lower base 10, and the longitudinal sliding grooves 112 are intermittently arranged along the longitudinal direction of the lower base 10. The sliding mechanism comprises two longitudinal sliding block assemblies 22 and two transverse sliding block assemblies 21, one ends of the two transverse sliding block assemblies 21 are respectively arranged in the two transverse sliding grooves 111 in a sliding mode, and one ends of the two longitudinal sliding block assemblies 22 are respectively arranged in the two longitudinal sliding grooves 112 in a sliding mode. Specifically, the two longitudinal sliding block assemblies 22 slide into or out of the corresponding longitudinal sliding grooves 112 from the left plate edge 13 and the right plate edge 14, respectively. Similarly, the two lateral slider assemblies 21 slide into or out of the corresponding lateral sliding grooves 111 from the upper plate edge 11 and the upper plate edge 11, respectively. The lower die holder 10, the two longitudinal slide assemblies 22 and the two transverse slide assemblies 21 together form a lower die cavity 102 which is in die-pressing fit with an upper die cavity 104. The other ends of the two longitudinal slide assemblies 22 and the other ends of the two transverse slide assemblies 21 are abutted against the side wall of the upper die cavity 104. It will be appreciated that after the upper and lower die

structures

101 and 100 are closed, the two longitudinal slide assemblies 22 and the two transverse slide assemblies 21 are simultaneously secured, thereby facilitating subsequent compression molding of the product 103.

Through set up a plurality of horizontal slider component 21 and vertical slider component 22 on the die holder 10, when product 103 demolding, each horizontal slider component 21 and each vertical slider component 22 all can the lateral sliding to make things convenient for product 103 demolding and avoid causing the extrusion to product 103 surface, thereby guaranteed product 103's plane degree, improved product 103's yield.

Alternatively, in this embodiment, one end surface of the lower mold structure 100 is fixed on a fixed mounting plate of the press, and the other end surface of the lower mold structure 100 is clamped with the upper mold structure 101 and subjected to the molding pressure of the machine. I.e. the lower die structure 100 is in a stationary die arrangement and the upper die structure 101 is in a movable die arrangement.

Referring to fig. 7 to 8, two end faces of the lower mold structure 100 require a sufficient pressure area, and the lower mold structure 100 is further provided with a guide post and a guide sleeve and a spring positioning post, the guide post and the guide sleeve play a guiding role to ensure a correct position of the upper mold structure 101 and the lower mold structure 100 during installation and mold closing. The guide post and guide sleeve should have sufficient rigidity and wear resistance, and the fit clearance is required to be reasonable. The spring positioning columns play a positioning role, and ensure the positioning accuracy when the upper die structure 101 and the lower die structure 100 are closed and opened. Wherein, the aligning holes of the upper die structure 101 and the lower die structure 100 require precise matching.

In one embodiment, the lower mold structure 100 further includes four inserts 40, each insert 40 is disposed diagonally in pairs, and the four inserts 40 are circumferentially arranged around a central position of the lower mold cavity 102, specifically, the opening of the lower mold cavity 102 is quadrilateral, and the four inserts 40 are respectively located at four corners of the lower mold cavity 102. Each insert 40 includes two inserts 41, one end of one insert 41 is connected to one end of the other insert 41, and the two inserts 41 are axially and vertically arranged, that is, the two inserts 41 are arranged in an L shape. And two tesserae 41 located in the same tesserae 40 abut against a longitudinal slide assembly 22 and a transverse slide assembly 21, respectively.

In one embodiment, each insert 40 has an insert positioning hole 42, and the bottom of the lower mold cavity 102 has an insert positioning post 43 corresponding to each insert positioning hole 42. The four corners of the lower mold cavity 102 are provided with the embedded positioning columns 43, so that not only can the insert 40 be accurately positioned, but also the accurate positioning of the product 103 in the lower mold cavity 102 is ensured when the finished product is molded. In one embodiment, each lateral slide assembly 21 includes a lateral side block 211 and two lateral angle slides 212 spaced apart along the length of the lateral side block 211, and both ends of each lateral angle slide 212 longitudinally abut the lateral side block 211 and the corresponding mosaic block 41, respectively. Further, the lateral side blocks 211 are provided with lateral positioning grooves 216 at positions abutting against the lateral angle sliders 212. The position that horizontal angle position slider 212 butt mosaic block 41 has seted up horizontal spacing groove 219, and mosaic block 41's one end is spacing in horizontal spacing groove 219 to make mosaic block 41 further keep fixed and stable.

Referring to fig. 8 to 10, in one embodiment, each longitudinal sliding block assembly 22 includes a longitudinal side block and two longitudinal angle sliding blocks 222 arranged at intervals along the length direction of the longitudinal side block, and both ends of each longitudinal angle sliding block 222 are respectively and transversely abutted against the longitudinal side block and the corresponding mosaic block 41. Further, the longitudinal side block is provided with a longitudinal positioning slot 226 at the position where the longitudinal side block abuts against each longitudinal angle position slider 222. The position of the longitudinal angle position slider 222 abutting against the mosaic block 41 is provided with a longitudinal limit groove, and one end of the mosaic block 41 is limited in the longitudinal limit groove, so that the mosaic block 41 is further kept fixed and stable.

Optionally, the insert 40 in this embodiment is a metal piece corner block, the metal piece corner block is pre-embedded in four corners of the lower mold cavity 102 in advance, and the positioning of the metal piece corner block in the compression molding is realized by the transverse corner slide block 212 and the longitudinal corner slide block 222. It will be appreciated that the lateral angular slide 212 and the longitudinal angular slide 222 are structurally and functionally equivalent, thereby allowing mass production and reducing production costs. And adopt the purpose of two liang of location of horizontal angle position slider 212 and vertical angle position slider 222, when can also prevent that horizontal angle position slider 212 or vertical angle position slider 222 from appearing the problem, can take out the change alone fast or repair the mould, do not influence whole lower mould structure 100.

In one embodiment, the lateral side blocks 211 disposed in the lateral sliding slots 111 near the lower plate edge 12 include a nozzle positioning block 213 and two lateral angle positioning blocks 214 respectively abutting against the corresponding lateral angle sliding blocks 212, the nozzle positioning block 213 is located between the two lateral angle positioning blocks 214, the nozzle positioning block 213 defines a nozzle positioning slot 2134 communicating with the lower mold cavity 102, the lower mold structure 100 further includes an air duct 30 disposed in the lower mold cavity 102, and an air inlet end of the air duct 30 penetrates through and is positioned in the nozzle positioning slot 2134. Specifically, the air nozzle positioning block 213 includes an air nozzle seat block 2131 and an air nozzle slider 2132 stacked with the air nozzle seat block 2131, two ends of the air nozzle seat block 2131 are respectively connected between the two lateral corner positioning blocks 214, and the air inlet end of the air duct 30 is positioned between the air nozzle slider 2132 and the air nozzle seat block 2131.

Referring to fig. 1 to 10, it can be understood that the air nozzle positioning block 213 is used for positioning the air duct 30, and the two lateral angle positioning blocks 214 are respectively used for positioning the corresponding lateral angle sliders 212, so as to ensure the flatness of the product 103 and the rigidity of the product 103 while ensuring the formation of the product 103.

Optionally, there are two air passages 30, each air passage 30 is arranged in a ring structure, and each air passage 30 includes an air bag 31 and an inflation nozzle 32 connected to the air bag 31 and located in the nozzle positioning groove 2134, and the inflation nozzle 32 connects the air bag 31 and the air intake device. During the molding, the air inlet device stably and uniformly fills air into the air bag 31 through the air charging nozzle 32. Thereby guarantee the evenly distributed of the inside hollow structure material of compression molding's product 103, and then guarantee the intensity of product 103. By arranging the air bag 31 and adopting the process of mould pressing and air blowing integrated forming, the product 103 has a hollow structure, the strength of the product 103 is ensured, and the weight and the material use of the product 103 are reduced.

In one embodiment, nozzle positioning holes 2133 are further formed in the nozzle positioning block 213, the extending direction of the nozzle positioning holes 2133 is perpendicular to the extending direction of the nozzle positioning slots 2134, and nozzle positioning pillars 215 are protruded from the lower mold cavity 102 corresponding to the positions of the nozzle positioning holes 2133 and adapted to the nozzle positioning holes 2133. Two air tap positioning holes 2133 are formed, two air tap positioning columns 215 are also arranged, and the fixing of the inflating nozzle 32 and the flatness of the product 103 are guaranteed through the matching of the air tap positioning holes 2133 and the air tap positioning columns 215 and the matching limit of the upper die structure 101 and the lower die base 10. Further, the surfaces of the lateral angle positioning block 214 and the gas nozzle positioning block 213 in the lower mold cavity 102 are inclined planes with a predetermined inclination angle, so as to facilitate the demolding of the product 103, and prevent the interference between the lateral slider assembly 21 and the product 103.

In one embodiment, each longitudinal side block includes a handle positioning block and two longitudinal angle positioning blocks 221 laterally abutting the two longitudinal angle sliders 222, respectively, and the handle positioning block is located between the two longitudinal angle positioning blocks 221. The handle positioning block is used for carrying out handle modeling.

In one embodiment, the handle positioning block includes a first half sliding block 2231 located in the longitudinal sliding groove 112 and a second half sliding block 2232 disposed opposite to the first half sliding block 2231, a handle sliding groove 2233 is disposed at a position of the cavity bottom of the upper mold cavity 104 corresponding to each second half sliding block 2232, and one end of the second half sliding block 2232 is slidably disposed in the corresponding handle sliding groove 2233. The first half block 2231 and the second half block 2232 are matched to form a handle, and when the product 103 is ejected, the first half block 2231 and the second half block 2232 slide back to each other to reserve an ejection space of the product 103, thereby facilitating ejection of the product 103 and ensuring the flatness of the product 103.

Referring to fig. 1 to 3, alternatively, the transverse angular positioning block 214 and the longitudinal angular positioning block 221 are structurally and functionally equivalent, so that the mold can be mass-produced, can be separately maintained and replaced, does not affect the overall molding process, and reduces the cost of the lower mold structure 100.

The utility model also provides a forming die 200, this forming die 200 includes lower die structure 100, and this lower die structure 100's concrete structure refers to above-mentioned embodiment, because this forming die 200 has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought equally, and the repeated description is no longer given here.

In one embodiment, the molding die 200 further includes an upper die structure 101 that mates with the lower die structure 100, the upper die structure 101 having an upper die cavity 104 that mates with a lower die cavity 102.

Optionally, the embodiment further provides a hollow frame mould pressing and air blowing integrated forming process method, which is a production process that a laid carbon fiber prepreg blank is placed into a mould cavity, and is heated and pressurized in the mould cavity, and air is blown at the same time, so that carbon fibers are cured and formed into a predetermined product 103.

The method comprises the following steps:

s1, preparing materials: preparing the required carbon fiber prepreg according to the shape and the size of the product 103, namely cutting the carbon fiber prepreg by using a die;

s2, layering: and (3) according to the stress condition of the product 103, laminating the prepregs according to requirements, and combining into a primary blank shape of the product 103.

S3, preparing a die: and cleaning the die cavity, ensuring the die cavity to be clean, coating a release agent, and facilitating demolding of the product 103 after molding.

S4, die pressing: the molding die 200 filled with the blank of the product 103 is mounted to a molding press, and pressure, temperature, and air pressure of air blowing are set, and molding is performed. Wherein the air blowing pressure is 0.6Mpa, the mould pressing temperature is 150 ℃, and the mould pressing and air blowing time is 45 minutes.

S5, cooling and demolding: after the molding is finished, cooling is performed for a predetermined time, generally set to 15 minutes, and then the molding die 200 is opened and the product 103 is taken out.

S6, post-processing: the product 103 is taken out of the forming die 200, and a series of post-treatment processes such as trimming, polishing, filling, painting and the like are performed on the product 103.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a lower die structure for with last die structure cooperation to the shaping goes out the product, wherein, it has the last die cavity that supplies product compression molding to go up die structure, its characterized in that, lower die structure includes:

2. The lower die structure of claim 1, wherein: the lower die structure further comprises four inserts, each insert is arranged in a pairwise opposite angle mode, the four inserts are arranged around the center of the lower die cavity in a circumferential mode, each insert comprises two inserts, one end of each insert is connected with one end of the other insert, the two inserts are arranged in an axial direction and perpendicular to each other, and the two inserts of the same insert are respectively abutted against one longitudinal sliding block assembly and one transverse sliding block assembly.

3. The lower die structure of claim 2, wherein: each insert is provided with an embedded positioning hole, and the position of the cavity bottom of the lower mold cavity, which corresponds to each embedded positioning hole, is convexly provided with an embedded positioning column matched with the positioning hole.

4. The lower die structure of claim 2, wherein: each horizontal slider subassembly all includes horizontal side piece and follows the length direction interval of horizontal side piece sets up two horizontal angular position sliders, the both ends of each horizontal angular position slider respectively vertically the butt horizontal side piece and the mosaic block that corresponds.

5. The lower die structure of claim 4, wherein: one of them horizontal side piece includes the air cock locating piece and the butt corresponds respectively two horizontal angle position locating pieces of horizontal angle position slider, the air cock locating piece is located two between the horizontal angle position locating piece, the intercommunication has been seted up to the air cock locating piece the air cock constant head tank in lower model cavity, lower die structure still including set up in the air flue in lower model cavity, the inlet end of air flue is worn to establish and is located the air cock constant head tank.

6. The lower die structure of claim 5, wherein: the air faucet positioning block is further provided with an air faucet positioning hole, the extending direction of the air faucet positioning hole is perpendicular to the extending direction of the air faucet positioning groove, and an air faucet positioning column matched with the air faucet positioning hole is convexly arranged at the position, corresponding to the air faucet positioning hole, of the lower mold cavity.

7. The lower die structure of claim 2, wherein: each longitudinal sliding block assembly comprises a longitudinal side block and two longitudinal angle position sliding blocks arranged at intervals along the length direction of the longitudinal side block, and two ends of each longitudinal angle position sliding block are transversely abutted to the longitudinal side block and the corresponding embedding block respectively.

8. The lower die structure of claim 7, wherein: each longitudinal side block comprises a handle positioning block and two longitudinal angle positioning blocks which are respectively transversely abutted against the two longitudinal angle sliding blocks, and the handle positioning block is positioned between the two longitudinal angle positioning blocks.

9. The lower die structure of claim 8, wherein: the handle positioning block comprises a first half sliding block and a second half sliding block arranged opposite to the first half sliding block, handle sliding grooves are formed in the positions, corresponding to the second half sliding blocks, of the cavity bottom of the upper die cavity, and one end of the second half sliding block is arranged in the corresponding handle sliding groove in a sliding mode.

10. A molding die, comprising: a lower die structure as claimed in any one of claims 1 to 9 and an upper die structure cooperating with the lower die structure.