A method of hot press forming a melamine tableware

Abstract

The present application relates to the technical field of hot press forming, and discloses a hot press forming method of melamine tableware, which comprises the following steps: a worker puts heated melamine raw materials into a lower mold, then controls the movable end of a hydraulic cylinder to extend, drives the lower mold to be combined with an upper mold, in the process, the opposite ends of two separate rods slide upward along the surface of the upper mold, after the tableware is formed, the worker controls the movable end of the hydraulic cylinder to retract, drives the lower mold to descend, the opposite ends of the two separate rods slide downward along the surface of the upper mold, pushes the melamine tableware hanging on the surface of the upper mold down, and the melamine tableware falls into the lower mold. The hot press forming method of melamine tableware can push the melamine tableware hanging on the surface of the upper mold down and fall into the lower mold by the opposite ends of the two separate rods sliding downward along the surface of the upper mold, so that the worker can conveniently add raw materials of different colors into the lower mold.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot press forming, in particular to a hot press forming method of melamine tableware. BACKGROUND

[0002] Melamine tableware, also known as porcelain imitation, melamine, plastic porcelain, scientific porcelain, etc., is a processed product of chemical raw materials and a new type of tableware popular in China. It has the characteristics of hard quality, durability, and not easy to break, and has been widely used in catering, hotels, hotels, and families in recent years. It is a substitute product for traditional porcelain.

[0003] During the hot press forming process of melamine tableware, the melamine raw material is usually first placed in the heating area of the hot press forming device. The raw material is heated to a plasticizing temperature in the processing area, and then placed in a mold (the internal shape of the mold matches the shape of the required tableware). The raw material is fully filled in the mold by applying high pressure and maintaining for a certain period of time to ensure the thermal solidification and shape stability of the material. Then, gradually reduce the pressure to separate the upper and lower molds, and finally take out the formed melamine tableware.

[0004] For example, the Chinese patent with publication number CN212995842U discloses a multi-color melamine tableware and its forming equipment. The technical points are as follows: the longitudinal section of the tableware includes a first embryo layer, a second embryo layer, and a third embryo layer. The first embryo layer extends from the center to the peripheral wall. The second embryo layer is arranged on the upper surface of the first embryo layer and extends from the center to the peripheral wall. The peripheral edge of the first embryo layer is overlapped with the outer peripheral edge of the second embryo layer to form a first joint line on the surface of the tableware. The third embryo layer is arranged on the upper surface of the second embryo layer and extends from the center to the peripheral wall. The peripheral edge of the third embryo layer is overlapped with the inner peripheral edge of the second embryo layer to form a second joint line on the surface of the tableware. The first embryo layer, the second embryo layer, and the third embryo layer are formed by molding in sequence to form the first joint line and the second joint line, which can form at least three different colors with the joint lines as the boundary. The color is rich and the distribution area of each color is not limited. Moreover, the color is the material itself and will not release harmful substances.

[0005] The above patent can make the tableware form at least three different colors with each splicing line as the boundary, but since the raw material will shrink and deform to a certain extent during the hot pressing forming process of the melamine tableware, in order to compensate for the shrinkage and deformation of the raw material, the amount of raw material needs to be larger than the mass of the final tableware, which inevitably causes the outer wall of the tableware to have burrs. When the lower mold is controlled to descend and the upper and lower molds are separated, the burrs of the tableware are easy to be pulled to the edge of the upper mold, causing the tableware to be easily hung on the upper mold and difficult to be automatically separated from the upper mold. At this time, the worker needs to manually take the tableware off the surface of the upper mold. However, when a tableware needs to be pressed and combined with multiple colors of raw materials in turn, the worker may need to manually take the tableware off the surface of the upper mold multiple times, affecting the forming efficiency. SUMMARY

[0006] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0007] In view of the above problem that the tableware may be difficult to be automatically separated from the upper mold and the worker needs to manually take the tableware off the surface of the upper mold, affecting the forming efficiency, the present application is proposed.

[0008] Therefore, the purpose of the present application is to provide a hot pressing forming method for melamine tableware, which aims to: when the lower mold is controlled to descend and the upper and lower molds are separated, the tableware hung on the upper mold can be dropped and fall into the inside of the lower mold, without the need for the worker to manually take the tableware off the surface of the upper mold.

[0009] To achieve the above purpose, the present application provides the following technical solution: a hot pressing forming method for melamine tableware, comprising the following steps:

[0010] S1: The worker puts the heated melamine raw material into the lower mold, then controls the movable end of the hydraulic cylinder to extend, so that the lower mold rises and is pressed with the upper mold. In this process, the push plate pushes one of the inclined plates to rise, which causes the second elastic piece to be extruded and store elastic potential energy. The rising of one of the inclined plates drives one of the sleeves to rise, which in turn drives one of the separation rods to slide upward along the surface of the upper mold, extruding the first elastic piece and storing elastic potential energy. At the same time, under the connection of the telescopic rod, the opposite ends of the two separation rods are driven to slide upward along the surface of the upper mold. After the tableware is hot-pressed, the movable end of the hydraulic cylinder is controlled to retract, driving the connecting plate and the lower mold to descend. When the push plate and the inclined plate are separated, the elastic force of the second elastic piece drives the two inclined plates to move obliquely downward, in turn driving the opposite ends of the two separation rods to slide downward along the surface of the upper mold, and the melamine tableware hanging on the surface of the upper mold is pushed down and falls into the inside of the lower mold;

[0011] S2: When the lower mold descends to a certain height, the outer wall of the fixed rod is extruded with the inclined surface of the trapezoidal block, driving the fixed rod to move away from the square tube. The movement of the fixed rod drives the insertion rod to disengage from the inside of the square tube, and the first gear is fixed. At this time, the push rod extrudes the two elastic pieces, causing them to store elastic potential energy. Then, the outer wall of the first gear meshes with the outer wall of the first rack, driving the first gear to rotate half a circle, in turn driving the lower mold to turn half a circle to pour out the tableware in the lower mold. At the same time, one end of the positioning rod rotates from the second positioning block to the first positioning block. Then, the fixed rod is separated from the trapezoidal block, and the push rod moves under the action of the elastic force of the two elastic pieces. The movement of the push rod drives the insertion rod to reinsert into the inside of the square tube, fixing the first gear. The tableware falls above the conveyor belt and is conveyed to the outside of the workbench.

[0012] S3: After the lower mold turns half a circle, the movable end of the hydraulic cylinder continues to descend, causing the second rack to mesh with the second gear. In this process, the descent of the second rack drives the second gear to rotate, which in turn drives the first connecting rod to rotate, and the second connecting rod to rotate, in turn driving the T-shaped block to move towards the lower mold until the cleaning cloth completely wipes the surface of the lower mold.

[0013] S4: The movable end of the hydraulic cylinder is controlled to rise, driving the connecting plate, the second rack, and the lower mold to rise. At the same time, the rising of the second rack drives the second gear to rotate in the opposite direction, and the first and second connecting rods drive the cleaning cloth to gradually return to the initial position.

[0014] The present application aims to provide a hot press forming device, which aims to: when the lower die is controlled to descend and separate the upper and lower dies, the tableware hanging on the upper die can be dropped into the lower die without the need for workers to manually take the tableware off the surface of the upper die.

[0015] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a hot press forming device, comprising a workbench, a vertical plate arranged on the workbench, an upper die arranged on the vertical plate, and a lower die arranged below the upper die, the inside of the workbench is provided with a hydraulic cylinder, the movable end of the hydraulic cylinder is provided with a mounting plate, the mounting plate is provided with a connecting plate, and the outer wall of the connecting plate is connected with the outer wall of the lower die, the vertical plate is provided with a separation component for separating the melamine tableware and the upper die;

[0016] The separation component comprises a push-off assembly and a connecting piece arranged on the vertical plate, the push-off assembly is provided with two, and the two push-off assemblies are connected through the connecting piece;

[0017] The shape of the lower die is matched with the shape of the upper die, and the position of the lower die corresponds to the position of the upper die, through the separation component, the tableware hanging on the surface of the upper die is dropped into the lower die, the two push-off assemblies are symmetrically arranged on both sides of the upper die, and the two push-off assemblies realize synchronous movement state due to the connection of the connecting piece.

[0018] As a preferred scheme of the hot press forming device, the push-off assembly comprises a limiting groove opened in the outer wall of the vertical plate, an inclined plate slidingly installed in the limiting groove, a sleeve arranged on the inclined plate, a separation rod arranged in the sleeve, a shaft shoulder arranged on the separation rod, a first elastic piece sleeved on the separation rod, one end of the first elastic piece is connected with the outer wall of the sleeve, the other end of the first elastic piece is connected with the outer wall of the shaft shoulder, the push-off assembly further comprises a push plate arranged on the connecting plate and a second elastic piece arranged in the limiting groove and located above the inclined plate;

[0019] The part of the limiting groove passing through the vertical plate is inclinedly arranged, the inclined plate slides along the inclined part of the limiting groove, one side of the upper die close to the separation rod is inclinedly arranged, and the opposite ends of the two separation rods are matched with the outer wall of the upper die, so that the opposite ends of the two separation rods can slide along the surface of the upper die.

[0020] As a preferred scheme of the hot press forming device, the connecting piece is a telescopic rod, and the telescopic rod is connected with the outer wall of the other inclined plate, and the movable end of the telescopic rod is connected with the outer wall of one of the inclined plates.

[0021] Through the telescopic rod, the two push-off assemblies can be driven to synchronously ascend and descend.

[0022] As a preferred scheme of the hot press forming device, the vertical plate is provided with a blanking component for blanking, the blanking component comprises a turnover assembly arranged on the vertical plate, a fixing assembly arranged on the turnover assembly, a containing groove arranged on the outer wall of the workbench, a conveying belt arranged in the containing groove, and a flexible pad arranged on the conveying belt.

[0023] The turnover assembly can turn the lower mold by 180 degrees when the lower mold is lowered to a certain height, and the fixing assembly can prevent the lower mold from rotating during sliding.

[0024] As a preferred scheme of the hot press forming device, the turnover assembly comprises a rotating rod arranged on the mounting plate, one end of the rotating rod is connected with the outer wall of the connecting plate, the turnover assembly further comprises a first gear arranged at the other end of the rotating rod, a fixing block arranged on the vertical plate, a first rack arranged on the fixing block, a positioning rod arranged on the outer wall of the rotating rod, a first positioning block arranged on the mounting plate, and a second positioning block arranged on the mounting plate, the outer wall of the positioning rod is matched with the outer wall of the second positioning block, and the outer wall of the positioning rod is matched with the outer wall of the first positioning block.

[0025] The outer wall of the positioning rod is provided with a groove for the first positioning block and the second positioning block, and the cooperation between the first positioning block, the second positioning block and the positioning rod can limit the rotation angle of the rotating rod.

[0026] As a preferred scheme of the hot press forming device, the fixing assembly comprises a sliding groove arranged on the outer wall of the fixing block, and a limiting rod slidingly arranged in the sliding groove, one end of the limiting rod located in the lower mold is connected with the outer wall of the mounting plate, the fixing assembly further comprises a plug rod arranged in the limiting rod, a square tube arranged on the first gear, a fixing rod arranged on the plug rod, a trapezoidal block arranged on the fixing block, a push rod arranged on the plug rod, an elastic sheet arranged at the end of the push rod away from the plug rod, an elliptical groove arranged in the limiting rod, and the elastic sheet is located in the elliptical groove, and the push rod is slidingly arranged in the elliptical groove.

[0027] The square tube is a regular quadrilateral, the shape of the plug rod is matched with the shape of the square tube, so that the plug rod can still be inserted into the square tube after the square tube rotates by 180 degrees, the trapezoidal block is fixedly arranged on the outer wall of the fixing block, and the surfaces of the trapezoidal block close to and away from the fixing rod are inclinedly arranged, and the trapezoidal block corresponds to the position of the first rack.

[0028] As a preferred scheme of the hot press forming device, the inner part of the containing groove is provided with a cleaning component for wiping the lower mold, the cleaning component comprises a bearing plate arranged in the containing groove, a cleaning cloth arranged on the bearing plate, and a sliding assembly for driving the bearing plate to slide.

[0029] The cleaning wiper is a sponge material, and since the sponge is a porous and porous material, the cleaning wiper can well adapt to the recesses in the lower mold, and through the sliding assembly, the bearing plate can be driven to slide towards the lower mold or away from the lower mold, and the cleaning wiper can be driven to wipe the surface of the lower mold.

[0030] As a preferred scheme of the hot press forming device, the sliding assembly comprises a second rack arranged on the connecting plate, a supporting block arranged in the accommodating groove, a second gear arranged on the supporting block, a first connecting rod arranged at the axial end of the second gear, a second connecting rod arranged on the first connecting rod, a T-shaped block arranged on the second connecting rod, and a T-shaped groove arranged on the inner wall of the accommodating groove, and the T-shaped block is slidably arranged in the T-shaped groove.

[0031] The outer wall of the T-shaped block is slidably attached to the inner wall of the T-shaped groove, so as to ensure the stability of the T-shaped block during sliding.

[0032] The present application has the following advantages:

[0033] 1. By controlling the extension of the movable end of the hydraulic cylinder, the lower mold and the upper mold are pressed together, and in this process, the push plate pushes one of the inclined plates to rise, and the opposite ends of the two separation rods slide upward along the surface of the upper mold. After the tableware is formed, the movable end of the hydraulic cylinder is controlled to retract, and the lower mold is lowered. After the push plate and the inclined plate are separated, due to the elastic force of the second elastic member, the opposite ends of the two separation rods slide downward along the surface of the upper mold, and the melamine tableware hanging on the surface of the upper mold is pushed down and falls into the interior of the lower mold, effectively improving the forming efficiency of the tableware and effectively solving the problem that the tableware may be difficult to automatically separate from the upper mold in the prior art, and the tableware needs to be manually taken off from the surface of the upper mold by the worker, affecting the forming efficiency.

[0034] 2. By controlling the lower mold to descend to a certain height, the outer wall of the fixed rod is extruded with the inclined surface of the trapezoidal block, the insertion rod is separated from the interior of the square tube, the first gear is released, and then the outer wall of the first gear is engaged with the outer wall of the first rack, so as to drive the lower mold to turn half a circle and pour out the tableware in the lower mold. The tableware falls above the conveyor belt and is conveyed to the outside of the workbench, effectively avoiding the problem that the worker manually takes out the tableware from the lower mold and is easily scalded, and further improving the convenience of using the device.

[0035] 3. After the lower mold rotates half a turn, continue to control the moving end of the hydraulic cylinder to descend, which will cause the second rack to descend and drive the second gear to rotate. Then, the second connecting rod can drive the T-block to move closer to the lower mold until the cleaning wipe completely wipes the surface of the lower mold. By driving the cleaning wipe to wipe the surface of the lower mold, the burrs and residues attached to the surface of the lower mold are wiped away, so that the surface of the lower mold remains smooth, thereby reducing the adhesion between the lower mold and the melamine material, making it easier for the next piece of tableware to separate from the lower mold after molding. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0037] Figure 1 This is a perspective view of the hot pressing molding method for melamine tableware according to the present invention.

[0038] Figure 2 This is a schematic diagram of the installation of the push-off component in the hot pressing molding method of melamine tableware of the present invention.

[0039] Figure 3 For the present invention Figure 2 An enlarged schematic diagram of part A in the middle.

[0040] Figure 4 This is a perspective view of the push-off component in the hot pressing molding method of melamine tableware of the present invention.

[0041] Figure 5 This is a schematic diagram of the installation of the push plate in the hot pressing molding method of melamine tableware of the present invention.

[0042] Figure 6 This is a schematic diagram of the installation of the feeding component in the hot pressing molding method for melamine tableware of the present invention.

[0043] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of part B.

[0044] Figure 8 This is a perspective view of the flipping component in the thermoforming method for melamine tableware of the present invention.

[0045] Figure 9 This is a perspective view of the square tube in the hot pressing molding method for melamine tableware of the present invention.

[0046] Figure 10 This is a cross-sectional view of the limiting rod in the hot pressing molding method of melamine tableware of the present invention.

[0047] Figure 11 Figure 1 is a schematic diagram of the installation of the cleaning component in the hot-press forming method of the melamine tableware of the present application.

[0048] Figure 12 Figure 2 is a schematic diagram of the C part of the present application. Figure 11

[0049] Figure 13 Figure 3 is a perspective view of the sliding assembly in the hot-press forming method of the melamine tableware of the present application.

[0050] Figure 14 Figure 4 is a working schematic diagram of the cleaning component in the hot-press forming method of the melamine tableware of the present application.

[0051] In the figures:

[0052] 1, workbench; 2, vertical plate; 3, upper die; 4, lower die; 5, hydraulic cylinder; 6, mounting plate; 7, connecting plate; 8, pushing-away assembly; 9, limiting groove; 10, inclined plate; 11, sleeve; 12, separation rod; 13, shaft shoulder; 14, first elastic member; 15, push plate; 16, second elastic member; 17, telescopic rod; 18, overturning assembly; 19, fixing assembly; 20, containing groove; 21, conveying belt; 22, flexible pad; 23, rotating rod; 24, first gear; 25, fixing block; 26, first rack; 27, positioning rod; 28, first positioning block; 29, second positioning block; 30, sliding groove; 31, limiting rod; 32, insertion rod; 33, square tube; 34, fixing rod; 35, trapezoidal block; 36, push rod; 37, elastic sheet; 38, oval groove; 39, bearing plate; 40, cleaning wipe; 41, sliding assembly; 42, supporting block; 43, second gear; 44, first connecting rod; 45, second connecting rod; 46, T-shaped block; 47, T-shaped groove; 48, second rack. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0054] Example 1, with reference to Figures 1-14 The first embodiment of the present application provides a hot-press forming method of melamine tableware, which comprises the following steps:

[0055] ​S1: the staff puts the heated melamine raw material into the lower mold 4, then controls the extension of the movable end of the hydraulic cylinder 5 to make the lower mold 4 rise and press with the upper mold 3, in this process, the push plate 15 pushes one of the inclined plates 10 to rise, the rising of the inclined plate 10 causes the extrusion of the second elastic element 16, so that the second elastic element 16 stores elastic potential energy, the rising of one of the inclined plates 10 drives the rising of one of the sleeves 11, and then drives the upward sliding of one of the separation rods 12 along the surface of the upper mold 3, the shaft shoulder 13 causes the extrusion of the first elastic element 14, so that the first elastic element 14 stores elastic potential energy, at the same time, under the connection of the telescopic rod 17, the opposite ends of the two separation rods 12 can slide upward along the surface of the upper mold 3, after the hot pressing of the tableware, the movable end of the hydraulic cylinder 5 is controlled to retract, driving the lower mold 4 and the connecting plate 7 to descend, when the push plate 15 is separated from the inclined plate 10, the two inclined plates 10 can move obliquely downward due to the elastic force of the second elastic element 16, then driving the opposite ends of the two separation rods 12 to slide downward along the surface of the upper mold 3, the melamine tableware hanging on the surface of the upper mold 3 can be pushed down and fall into the lower mold 4;

[0056] S2: when the lower mold 4 descends to a certain height, the outer wall of the fixed rod 34 is extruded with the inclined surface of the trapezoidal block 35, driving the fixed rod 34 to move away from the square tube 33, the movement of the fixed rod 34 drives the insertion rod 32 to disengage from the inside of the square tube 33, and the first gear 24 is unfixed, at this time, the push rod 36 extrudes the two elastic sheets 37, so that the two elastic sheets 37 store elastic potential energy, then the outer wall of the first gear 24 meshes with the outer wall of the first rack 26, driving the first gear 24 to rotate half a circle, then the rotating rod 23 can drive the lower mold 4 to turn half a circle to pour out the tableware in the lower mold 4, at the same time, one end of the positioning rod 27 rotates from the second positioning block 29 to the first positioning block 28, then the fixed rod 34 is separated from the trapezoidal block 35, under the action of the elastic force of the two elastic sheets 37, the push rod 36 moves, the movement of the push rod 36 drives the insertion rod 32 to reinsert into the inside of the square tube 33 to fix the first gear 24, and the tableware falls above the conveyor belt 21 and is conveyed to the outside of the workbench 1;

[0057] S3: after the lower mold 4 turns half a circle, the movable end of the hydraulic cylinder 5 continues to descend, so that the second rack 48 meshes with the second gear 43, in this process, the descending of the second rack 48 drives the rotation of the second gear 43, the rotation of the second gear 43 drives the rotation of the first connecting rod 44, the rotation of the first connecting rod 44 drives the rotation of the second connecting rod 45, then the second connecting rod 45 can drive the T-shaped block 46 to move towards the lower mold 4 until the cleaning cloth 40 completely wipes the surface of the lower mold 4;

[0058] S4: the movable end of the hydraulic cylinder 5 is controlled to rise, which can drive the connecting plate 7, the second rack 48, and the lower mold 4 to rise, at the same time, the second rack 48 drives the second gear 43 to rotate reversely, and the first connecting rod 44 and the second connecting rod 45 drive the cleaning wiper 40 to gradually return to the initial position.

[0059] Embodiment 2, refer to Figures 1-5 For the second embodiment of the present application, a hot press forming device is provided, which comprises a workbench 1, a vertical plate 2 arranged on the workbench 1, an upper mold 3 arranged on the vertical plate 2, and a lower mold 4 arranged below the upper mold 3, the inside of the workbench 1 is provided with a hydraulic cylinder 5, the movable end of the hydraulic cylinder 5 is provided with a mounting plate 6, the mounting plate 6 is provided with a connecting plate 7, and the outer wall of the connecting plate 7 is connected with the outer wall of the lower mold 4, and the vertical plate 2 is provided with a separating component for separating the melamine tableware from the upper mold 3.

[0060] Specifically, the vertical plate 2 is fixedly installed on the top surface of the workbench 1, the upper mold 3 is fixedly installed on the outer wall of the vertical plate 2, the hydraulic cylinder 5 is fixedly installed in the inside of the workbench 1, the mounting plate 6 is fixedly installed on the movable end of the hydraulic cylinder 5, the outer wall of the vertical plate 2 is provided with a through groove for sliding of the mounting plate 6, the outer walls of the connecting plate 7 and the lower mold 4 are fixedly connected respectively, the lower mold 4 is slidingly installed on the outer wall of the vertical plate 2, the shape of the lower mold 4 is matched with the shape of the upper mold 3, and the position of the lower mold 4 corresponds to the position of the upper mold 3, and through the separating component, the tableware hanging on the surface of the upper mold 3 falls into the lower mold 4.

[0061] Among them, the workbench 1, the vertical plate 2, the upper mold 3 and the lower mold 4 are common hot pressing technical means in the prior art, which will not be described in detail here, the working process is as follows: first, the melamine raw material is put into the heating processing area to make the raw material reach the plasticizing temperature, then the raw material is placed in the lower mold 4, the high pressure of the hydraulic cylinder 5 is used to make the raw material fully fill the upper mold 3 and the lower mold 4, and a certain time is kept to ensure the thermal curing and shape stability of the material, then the pressure is gradually reduced to separate the upper mold 3 and the lower mold 4, and finally the formed melamine tableware is taken out.

[0062] By controlling the work of the hydraulic cylinder 5, the movable end of the hydraulic cylinder 5 can be extended or retracted, thereby driving the mounting plate 6, the connecting plate 7, and the lower mold 4 to rise or fall, the heated melamine raw material is put into the inside of the lower mold 4 by the worker, and then the lower mold 4 is pressed with the upper mold 3 to press and form the melamine raw material in the lower mold 4.

[0063] The separating component comprises a pushing-away assembly 8 arranged on the vertical plate 2 and a connecting piece, the pushing-away assembly 8 is provided with two, and the two pushing-away assemblies 8 are connected through the connecting piece.

[0064] Specifically, the two push-off assemblies 8 are symmetrically arranged on the two sides of the upper die 3, and the two push-off assemblies 8 are in a synchronous movement state due to the connection of the connecting piece.

[0065] The push-off assembly 8 comprises a limiting groove 9 formed in the outer wall of the vertical plate 2, an inclined plate 10 slidingly installed in the limiting groove 9, a sleeve 11 arranged on the inclined plate 10, a separation rod 12 arranged in the sleeve 11, an axial shoulder 13 arranged on the separation rod 12, a first elastic member 14 sleeved on the separation rod 12, one end of the first elastic member 14 being connected with the outer wall of the sleeve 11, the other end of the first elastic member 14 being connected with the outer wall of the axial shoulder 13, the push-off assembly 8 further comprises a push plate 15 arranged on the connecting plate 7, and a second elastic member 16 arranged in the limiting groove 9 and located above the inclined plate 10.

[0066] Specifically, the limiting groove 9 is obliquely arranged through a part of the vertical plate 2, the inclined plate 10 slides along the inclined part of the limiting groove 9, the sleeve 11 is fixedly installed on the outer wall of the inclined plate 10, the separation rod 12 is slidingly installed in the sleeve 11, and the side of the upper die 3 close to the separation rod 12 is obliquely arranged, the opposite ends of the two separation rods 12 are matched with the outer wall of the upper die 3, so that the opposite ends of the two separation rods 12 can slide along the surface of the upper die 3.

[0067] The axial shoulder 13 is fixedly installed on the outer wall of the separation rod 12, one end of the first elastic member 14 is fixedly connected with the outer wall of the sleeve 11, and the other end of the first elastic member 14 is fixedly connected with the outer wall of the axial shoulder 13, wherein the first elastic member 14 can be a common spring or an elastic sheet, and preferably a spring, the first elastic member 14 can realize soft connection between the separation rod 12 and the sleeve 11, the surface of the upper die 3 can be protected when the separation rod 12 contacts the surface of the upper die 3, so as to avoid that the extrusion force of the two separation rods 12 is too large and scratches are formed on the surface of the upper die 3.

[0068] The push plate 15 is fixedly installed on the outer wall of the connecting plate 7, when the lower die 4 rises, the push plate 15 can push one of the inclined plates 10 to rise, one end of the second elastic member 16 is fixedly connected with the inner wall of the limiting groove 9, the other end of the second elastic member 16 is fixedly connected with the outer wall of the inclined plate 10, the second elastic member 16 can be a common spring or an elastic sheet in the prior art, and preferably a V-shaped elastic sheet, when the upper die 3 separates from the lower die 4 and drives the push plate 15 and one of the inclined plates 10 to separate, the inclined plate 10 can slide downward along the inclined part of the limiting groove 9 through the elastic force of the second elastic member 16.

[0069] The connecting piece is a telescopic rod 17, the telescopic rod 17 is connected with the outer wall of the other inclined plate 10, and the movable end of the telescopic rod 17 is connected with the outer wall of one of the inclined plates 10.

[0070] Specifically, the telescopic rod 17 can be composed of a fixed cylinder and a sliding rod sliding in the fixed cylinder, which is a common connecting means in the prior art and will not be described in detail herein. The telescopic rod 17 can drive the two push-away assemblies 8 to synchronously ascend and descend.

[0071] In use, the staff places the heated melamine raw material into the lower mold 4, and then controls the movable end of the hydraulic cylinder 5 to extend, so that the lower mold 4 rises and is pressed against the upper mold 3. In this process, the push plate 15 pushes one of the inclined plates 10 to rise, which causes the second elastic member 16 to be pressed and store elastic potential energy. The rising of the inclined plate 10 drives the sleeve 11 to rise, and then drives the separation rod 12 to slide upward along the surface of the upper mold 3. The shaft shoulder 13 presses the first elastic member 14 to store elastic potential energy. At the same time, under the connection of the telescopic rod 17, the opposite ends of the two separation rods 12 are driven to slide upward along the surface of the upper mold 3, thereby providing a pressing space for the upper mold 3 and the lower mold 4, and pressing and forming the melamine raw material in the lower mold 4.

[0072] After the tableware is hot-pressed and formed, the movable end of the hydraulic cylinder 5 is controlled to retract, thereby driving the connecting plate 7 and the lower mold 4 to descend. When the push plate 15 is separated from the inclined plate 10, the two inclined plates 10 are driven to move obliquely downward due to the elastic force of the second elastic member 16, thereby driving the opposite ends of the two separation rods 12 to slide downward along the surface of the upper mold 3. This can effectively push the melamine tableware hanging on the surface of the upper mold 3 to fall into the lower mold 4. In addition, the surface of the upper mold 3 can be protected by the first elastic member 14, so that the separation rods 12 do not have too large a pressing force and do not scratch the surface of the upper mold 3.

[0073] When the lower mold 4 is controlled to descend and separate from the upper mold 3, the tableware hanging on the upper mold 3 can be pushed to fall into the lower mold 4, so that the staff does not need to manually take the tableware off the surface of the upper mold 3. This facilitates the staff to sequentially add raw materials of different colors into the lower mold 4, thereby effectively improving the forming efficiency of the tableware.

[0074] Embodiment 3, refer to Figures 1-10 This is the third embodiment of the present application, which is different from the second embodiment in that:

[0075] The vertical plate 2 is provided with a discharging assembly for discharging. The discharging assembly comprises a turnover assembly 18 arranged on the vertical plate 2, a fixing assembly 19 arranged on the turnover assembly 18, a containing groove 20 formed in the outer wall of the workbench 1, a conveying belt 21 arranged in the containing groove 20, and a flexible pad 22 arranged on the conveying belt 21.

[0076] Specifically, the lower mold 4 can be turned over 180 degrees to pour out the melamine tableware in the lower mold 4 and realize the discharging by the turning assembly 18 when the lower mold 4 is lowered to a certain height. The lower mold 4 cannot rotate in the sliding process by the fixing assembly 19, effectively improving the stability of the lower mold 4 in the sliding process. The accommodating groove 20 provides operation space for the turning and discharging of the lower mold 4.

[0077] The outer wall of the workbench 1 is rotatably provided with conveying rollers, and the outer wall of the workbench 1 is fixedly provided with driving motors corresponding in number to the conveying rollers. The output shafts of the driving motors are fixedly connected to the axial ends of the conveying rollers. A conveying belt 21 is sleeved on the outer walls of the two conveying rollers. The conveying rollers can be driven to rotate by controlling the rotation of the output shafts of the driving motors, thereby driving the conveying belt 21 to transmit the melamine tableware falling onto the conveying belt 21 to the outside of the workbench 1. The flexible pad 22 can be a sponge pad. Since the sponge has a porous and loose structure, the melamine tableware can be buffered when falling from the lower mold 4 to the conveying belt 21, thereby protecting the surface of the melamine tableware.

[0078] The turning assembly 18 comprises a rotating rod 23 provided on the mounting plate 6, one end of the rotating rod 23 is connected to the outer wall of the connecting plate 7, the turning assembly 18 further comprises a first gear 24 provided on the other end of the rotating rod 23, a fixed block 25 provided on the vertical plate 2, a first rack 26 provided on the fixed block 25, a positioning rod 27 provided on the outer wall of the rotating rod 23, a first positioning block 28 provided on the mounting plate 6, and a second positioning block 29 provided on the mounting plate 6, and the outer wall of the positioning rod 27 and the outer wall of the second positioning block 29 are matched with each other, and the outer wall of the positioning rod 27 and the outer wall of the first positioning block 28 are matched with each other.

[0079] Specifically, the rotating rod 23 is rotatably installed on the mounting plate 6, one end of the rotating rod 23 is fixedly connected to the outer wall of the connecting plate 7, the other end of the rotating rod 23 is fixedly connected to the outer wall of the first gear 24, the fixed block 25 is fixedly installed on the outer wall of the vertical plate 2, the first rack 26 is fixedly installed on the outer wall of the fixed block 25, the positioning rod 27 is fixedly installed in the rotating rod 23, the first positioning block 28 is fixedly installed on the outer wall of the mounting plate 6, the second positioning block 29 is fixedly installed on the outer wall of the mounting plate 6, and the outer wall of the positioning rod 27 is provided with a groove for the first positioning block 28 and the second positioning block 29.

[0080] Due to the inertia of the first gear 24 during rotation, the rotating rod 23 has a tendency to continue to rotate after a half rotation, however, at this time, the rotating angle of the rotating rod 23 can be limited under the cooperation between the first positioning block 28, the second positioning block 29 and the positioning rod 27, one end of the rotating rod 23 contacts the first positioning block 28 after a half rotation and immediately stops rotating, which is beneficial to the falling of the tableware in the lower mold 4.

[0081] The fixing assembly 19 comprises a sliding groove 30 formed in the outer wall of the fixing block 25, a limiting rod 31 slidingly installed in the sliding groove 30, and the limiting rod 31 is connected with the outer wall of the mounting plate 6 at one end located in the upper mold 3, the fixing assembly 19 further comprises a plug rod 32 arranged in the limiting rod 31, a square tube 33 arranged on the first gear 24, a fixing rod 34 arranged on the plug rod 32, a trapezoidal block 35 arranged on the fixing block 25, a push rod 36 arranged on the plug rod 32, an elastic sheet 37 arranged on one end of the push rod 36 away from the plug rod 32, an elliptical groove 38 formed in the limiting rod 31, and the elastic sheet 37 is located in the elliptical groove 38, and the push rod 36 is slidingly installed in the elliptical groove 38.

[0082] Specifically, the outer wall of the limiting rod 31 slidingly abuts the inner wall of the sliding groove 30, effectively ensuring the stability of the limiting rod 31 during sliding, and the one end of the limiting rod 31 located in the upper mold 3 is fixedly connected with the outer wall of the mounting plate 6, when the movable end of the hydraulic cylinder 5 drives the mounting plate 6 to ascend and descend, the limiting rod 31 can be synchronously ascended and descended.

[0083] The plug rod 32 is slidingly installed in the limiting rod 31, the square tube 33 is fixedly installed on the outer wall of the first gear 24, the square tube 33 is a regular quadrilateral, the shape of the plug rod 32 is matched with the shape of the square tube 33, which makes the plug rod 32 still be able to be inserted into the square tube 33 after a half rotation of the square tube 33, the fixing rod 34 is fixedly installed on the outer wall of the plug rod 32, the trapezoidal block 35 is fixedly installed on the outer wall of the fixing block 25, and the faces of the trapezoidal block 35 close to and away from the fixing rod 34 are inclinedly arranged, the trapezoidal block 35 corresponds to the position of the first rack 26, the push rod 36 is fixedly installed on the outer wall of the plug rod 32, one end of the elastic sheet 37 is fixedly connected with the inner wall of the elliptical groove 38, the other end of the elastic sheet 37 is fixedly connected with the outer wall of the push rod 36, the elastic sheet 37 is provided with two, the elastic sheet 37 is arc-shaped, and the two elastic sheets 37 are symmetrically arranged, and the elliptical shape of the elliptical groove 38 can provide space for the deformation of the elastic sheet 37.

[0084] When the lower mold 4 is lowered to a certain height, the outer wall of the fixing rod 34 is extruded with the inclined surface of the trapezoidal block 35, the fixing rod 34 is driven to move away from the square tube 33, the movement of the fixing rod 34 drives the insertion rod 32 to disengage from the inside of the square tube 33, the fixing of the first gear 24 is released, at this time, the push rod 36 extrudes the two elastic sheets 37, the two elastic sheets 37 store elastic potential energy, then, the outer wall of the first gear 24 is engaged with the outer wall of the first rack 26, the first gear 24 can be driven to rotate half a circle, the rotating rod 23 can drive the lower mold 4 to overturn half a circle, the tableware in the lower mold 4 is poured out, at the same time, one end of the positioning rod 27 is rotated from the second positioning block 29 to the first positioning block 28, the rotating angle of the rotating rod 23 is effectively limited, then, the fixing rod 34 is separated from the trapezoidal block 35, under the action of the elasticity of the two elastic sheets 37, the push rod 36 is driven to move, the movement of the push rod 36 drives the insertion rod 32 to reinsert into the inside of the square tube 33, the first gear 24 is fixed, and the stability of the lower mold 4 when sliding is ensured.

[0085] Then, the movable end of the hydraulic cylinder 5 is controlled to rise, the lower mold 4 is driven to rise, the outer wall of the fixing rod 34 is extruded with the inclined surface of the trapezoidal block 35 again, the insertion rod 32 is driven to disengage from the inside of the square tube 33, the fixing of the first gear 24 is released, then, the first gear 24 is reengaged with the first rack 26, the first gear 24 is driven to rotate half a circle in the reverse direction, then the lower mold 4 is overturned upward to the original position, one end of the positioning rod 27 is rotated from the first positioning block 28 to the second positioning block 29 again, after the fixing rod 34 is separated from the trapezoidal block 35, the insertion rod 32 reinserts into the inside of the square tube 33, and the first gear 24 is fixed.

[0086] The problem that the staff is easily scalded when manually taking out the tableware from the lower mold 4 is effectively avoided, and the convenience of using the device is further improved.

[0087] When the staff needs to press and combine the melamine raw materials of different colors for multiple times, the lower mold 4 can be controlled to rise for one time of pressing and combining by the hydraulic cylinder 5, then the lower mold 4 is lowered to above the first rack 26, then new melamine raw materials are put in, then the lower mold 4 is controlled to rise for pressing and combining, the above operation is repeated until the tableware is hot-pressed and formed, then the lower mold 4 is controlled to be lowered to the first rack 26 for discharging.

[0088] The remaining structure is the same as that of the second embodiment.

[0089] Embodiment 4, refer to Figures 1-14 This is the fourth embodiment of the application, which is different from the third embodiment in that:

[0090] The inner part of the accommodating groove 20 is provided with a cleaning component for wiping the lower mold 4, which comprises a bearing plate 39 arranged in the inner part of the accommodating groove 20, a cleaning cloth 40 arranged on the bearing plate 39, and a sliding assembly 41 for driving the bearing plate 39 to slide.

[0091] Specifically, the bearing plate 39 is slidingly installed in the inner part of the accommodating groove 20, and the cleaning cloth 40 can be detachably installed on the outer wall of the bearing plate 39 by adhesion, buckling or the like, so as to facilitate the cleaning or replacement of the cleaning cloth 40 by the staff.

[0092] The cleaning cloth 40 is made of sponge material. Since the sponge is a porous and porous material, the cleaning cloth 40 can well adapt to the recesses in the inner part of the lower mold 4. Through the sliding assembly 41, the bearing plate 39 can be driven to slide towards the lower mold 4 or away from the lower mold 4, and the cleaning cloth 40 can be driven to wipe the surface of the lower mold 4, so as to wipe off the burr residues attached to the surface of the lower mold 4, keep the surface of the lower mold 4 smooth, reduce the adhesion between the lower mold 4 and the melamine material, and make it easy for the next tableware to be separated from the lower mold 4 after being formed.

[0093] The sliding assembly 41 comprises a second rack 48 arranged on the connecting plate 7, a support block 42 arranged in the inner part of the accommodating groove 20, a second gear 43 arranged on the support block 42, a first connecting rod 44 arranged at the axial end of the second gear 43, a second connecting rod 45 arranged on the first connecting rod 44, a T-shaped block 46 arranged on the second connecting rod 45, and a T-shaped groove 47 opened on the inner wall of the accommodating groove 20, and the T-shaped block 46 is slidingly installed in the inner part of the T-shaped groove 47.

[0094] Specifically, the second rack 48 is fixedly installed on the outer wall of the connecting plate 7, the support block 42 is fixedly installed on the bottom surface of the inner wall of the accommodating groove 20, the second gear 43 is rotatably installed on the outer wall of the support block 42, the second gear 43 is a fan-shaped gear, the first connecting rod 44 is fixedly installed at the axial end of the second gear 43, the second connecting rod 45 is hingedly connected to the outer wall of the first connecting rod 44, the T-shaped block 46 is hingedly connected to the outer wall of the second connecting rod 45, the outer wall of the T-shaped block 46 slidingly abuts against the inner wall of the T-shaped groove 47, so as to ensure the stability of the T-shaped block 46 when sliding.

[0095] After the lower mold 4 is flipped by half a circle, the movable end of the hydraulic cylinder 5 is controlled to continue to descend, so that the second rack 48 is engaged with the second gear 43. In this process, the second rack 48 drives the second gear 43 to rotate, the second gear 43 drives the first connecting rod 44 to rotate, the first connecting rod 44 drives the second connecting rod 45 to rotate, and then the second connecting rod 45 drives the T-shaped block 46 to move towards the lower mold 4 until the cleaning wipe 40 completely wipes the surface of the lower mold 4. Then, the movable end of the hydraulic cylinder 5 is controlled to rise, which drives the connecting plate 7, the second rack 48, and the lower mold 4 to rise. At the same time, the second rack 48 drives the second gear 43 to rotate in the opposite direction, and the first connecting rod 44 and the second connecting rod 45 drive the cleaning wipe 40 to gradually return to the initial position.

[0096] The remaining structure is the same as that of Example 3.

Claims

1. A hot press forming apparatus characterized by comprising: The utility model provides a kind of ceramic tableware production line, including workbench, vertical plate arranged on workbench, upper mould arranged on vertical plate and lower mould arranged below upper mould, characterized by, the inside of the workbench is provided with hydraulic cylinder, the movable end of the hydraulic cylinder is provided with mounting plate, the mounting plate is provided with connecting plate, and the outer wall of connecting plate is connected with the outer wall of lower mould, the vertical plate is provided with the separating component for separating ceramic tableware and upper mould, the separating component includes the push-off component and connecting piece arranged on the vertical plate, and the push-off component is provided with two, and two push-off components are connected by connecting piece. The separating component includes the push-off component and connecting piece arranged on the vertical plate, and the push-off component is provided with two, and two push-off components are connected by connecting piece. The vertical plate is provided with the blanking component for blanking, and the blanking component includes the turnover assembly arranged on the vertical plate, the fixed assembly arranged on the turnover assembly, the accommodating groove opened in the outer wall of the workbench, the conveying belt arranged in the accommodating groove and the flexible pad arranged on the conveying belt. The turnover assembly includes the rotating rod arranged on the mounting plate, and one end of the rotating rod is connected with the outer wall of the connecting plate, and the turnover assembly further includes the first gear arranged on the other end of the rotating rod, the fixed block arranged on the vertical plate, the first rack arranged on the fixed block, the positioning rod arranged on the outer wall of the rotating rod, the first positioning block arranged on the mounting plate and the second positioning block arranged on the mounting plate, and the outer wall of the positioning rod is matched with the outer wall of the second positioning block, and the outer wall of the positioning rod is matched with the outer wall of the first positioning block. The fixed assembly includes the sliding groove opened in the outer wall of the fixed block, the limiting rod slidingly installed in the sliding groove, and one end of the limiting rod located in the sliding groove is connected with the outer wall of the mounting plate, and the fixed assembly further includes the insertion rod arranged in the limiting rod, the square tube arranged on the first gear, the fixed rod arranged on the insertion rod, the trapezoidal block arranged on the fixed block, the push rod arranged on the insertion rod, the elastic sheet arranged on the end of the push rod away from the insertion rod, the elliptical groove opened in the limiting rod, and the elastic sheet is located in the elliptical groove, and the push rod is slidingly installed in the elliptical groove.

2. The hot press forming apparatus according to claim 1, characterized by: The push-off component includes the limiting groove opened in the outer wall of the vertical plate, the inclined plate slidingly installed in the limiting groove, the sleeve arranged on the inclined plate, the separation rod arranged in the sleeve, the shaft shoulder arranged on the separation rod, the first elastic member sleeved on the separation rod, and one end of the first elastic member is connected with the outer wall of the sleeve, the other end of the first elastic member is connected with the outer wall of the shaft shoulder, and the push-off component further includes the push plate arranged on the connecting plate and the second elastic member arranged in the limiting groove, and the second elastic member is located above the inclined plate.

3. The hot press forming apparatus according to claim 2, characterized by: The connecting piece is a telescopic rod, and the movable end of the telescopic rod is connected with the outer wall of one of the inclined plates, and the other end of the telescopic rod is connected with the outer wall of the other inclined plate.

4. The hot press forming apparatus according to claim 2, characterized by: The inside of the accommodating groove is provided with the cleaning component for wiping the lower mould, and the cleaning component includes the bearing plate arranged in the accommodating groove, the cleaning cloth arranged on the bearing plate and the sliding assembly for driving the bearing plate to slide.

5. The hot press forming apparatus according to claim 4, characterized by: The sliding assembly comprises a second rack provided on the connecting plate, a supporting block provided inside the accommodating groove, a second gear provided on the supporting block, a first connecting rod provided at an axial end of the second gear, a second connecting rod provided on the first connecting rod, a T-shaped block provided on the second connecting rod, and a T-shaped groove provided on the inner wall of the accommodating groove, and the T-shaped block is slidingly installed inside the T-shaped groove.

6. A method of hot press forming a vitrified tableware using the hot press forming apparatus according to claim 5, characterized by, The method comprises the following steps: S1: the staff puts the heated melamine raw material into the lower mold, then controls the movable end of the hydraulic cylinder to extend, drives the lower mold to be pressed with the upper mold, in this process, the opposite ends of the two separation rods slide upward along the surface of the upper mold, after the tableware is formed, the movable end of the hydraulic cylinder is controlled to retract, drives the lower mold to descend, the opposite ends of the two separation rods slide downward along the surface of the upper mold, pushes the melamine tableware hanging on the surface of the upper mold, and falls into the inside of the lower mold; S2: when the lower mold descends to a certain height, the outer wall of the fixed rod is extruded with the inclined surface of the trapezoidal block, drives the insertion rod to be separated from the inside of the square tube, then the outer wall of the first gear is engaged with the outer wall of the first rack, drives the lower mold to turn half a circle, pours out the tableware in the lower mold, one end of the positioning rod rotates from the second positioning block to the first positioning block, then the fixed rod is separated from the trapezoidal block, the insertion rod is reinserted into the inside of the square tube, the tableware falls above the conveying belt and is conveyed to the outside of the workbench; S3: the movable end of the hydraulic cylinder is continuously controlled to descend, the second rack is engaged with the second gear, the second connecting rod can drive the T-shaped block to move to the direction close to the lower mold, until the cleaning wipe completely wipes the surface of the lower mold; S4: the movable end of the hydraulic cylinder is controlled to ascend, can drive the connecting plate, the second rack and the lower mold to ascend, at the same time, the second rack ascends to drive the second gear to rotate reversely, drives the cleaning wipe to gradually return to the initial position.

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