TW201311580A - Continuous work piece mold equipment and a manufacturing method thereof - Google Patents

Abstract

A continuous work piece mold equipment comprises a plurality of upper mold cores and a single lower mold core. The plurality of upper mold cores is disposed on different work stations respectively. The lower mold core is moved on different work stations between the upper mold cores, thereby performing different processing operations by virtue of the operations of the plurality of upper mold cores. The present invention also provides a continuous work piece manufacturing method. Adopting a plurality of fixed upper mold cores and a movable lower mold core, simplified the process of mold repairing and mold assembling, and improved production efficiency.

Description

Continuous workpiece molding equipment and method

The invention relates to a workpiece manufacturing apparatus and method, in particular to a continuous workpiece molding apparatus and method.

The method for molding a glass workpiece is a method of synthesizing a pair of upper and lower mold cores to form a cavity by a template or a sleeve, and utilizing the high temperature softening property of the glass material, in the cavity by the upper mold and the lower mold During the pressing process, the glass material is pressed into a shape, deformed and brought close to the expected surface shape and thickness to form a molded semi-finished product, and then the molded semi-finished product is appropriately given in the process of cooling and shrinking the glass material and increasing the viscosity. Sub-pressure molding, at which time the surface shape of the upper and lower mold cores will be truly transferred onto the glass material, and finally the molded article of the glass workpiece of the desired surface shape is obtained.

In order to improve the production efficiency of the glass molding process, the industry often uses a multi-cavity molding equipment in production. The basic structure of the multi-cavity glass molding device comprises an upper template and a lower template. The same upper template is provided with a plurality of upper molds at the same time. Similarly, the same lower template is also provided with a plurality of lower molds, and each lower The number of templates in the number and position corresponds to the lower mold. A gasket is arranged between the upper mold core and the lower mold core and the upper template and the lower template to adjust the depth of placement of the upper mold core and the lower mold core in the upper template and the lower mold layer, so that the respective mold cavities are pressed. The thickness of the workpiece tends to be uniform. During the production, the upper template or the lower template is moved in the vertical direction by the transmission system, so that the mold core and the lower mold core are fixedly mounted on the upper template and the lower template to form a mold clamping and mold opening operation, thereby completing the molding of the glass workpiece.

However, in the conventional molding apparatus, the upper and lower mold cores are respectively fixedly formed in the upper and lower templates, and if one of the mold cores is defective, the entire template must be disassembled to perform zero component replacement, thereby delaying production. Or it can be treated by plugging, but if the number of plugs increases, the production efficiency must be reduced accordingly. In addition, since each pair of mold cores is adjusted by the spacers to ensure the relative height of the glass workpieces pressed by the respective cavities, it is necessary to accurately calculate and control the size of all the gaskets, and to perform high precision. The installation and commissioning are such that the heights of the mold cores are uniform, so that the assembly mold and the mold repair process are cumbersome and lengthy, and the skilled technician needs a lot of time and effort. Therefore, the conventional molding equipment has a long mold set and a complicated process, which reduces the production efficiency.

In view of the above, it is necessary to provide a continuous workpiece molding apparatus in which the upper mold cores are separately operated and disposed independently of the same upper mold, and the lower mold core is operated in a mobile manner. Between the upper molds, when a mold is defective, the entire mold can be removed without the need to disassemble the entire mold, and the height of each mold core can be installed and adjusted without high precision, thereby improving the overall production efficiency.

A continuous workpiece molding apparatus comprising: a plurality of upper mold cores respectively disposed at a plurality of different processing stations; and a single lower mold core, wherein the plurality of mold cores are moved between different processing stations by the plurality of processing stations The operation of the upper molds carries out different processing operations.

Further, the plurality of different processing stations include a preheating pre-pressing station, a high-temperature heating and pressurizing station, and an annealing station.

Further, the preheating pre-pressing station and the annealing station each comprise an infrared heating plate for heating the workpiece at a low temperature, and the lower mold core can be placed on the infrared heating plate.

Further, the infrared heating plate comprises an outer casing, an insulating thermal insulation board fixed on the outer casing, a plurality of infrared heating lamps evenly distributed on one side of the thermal insulation thermal insulation board, and an insulation layer filled between the outer casing and the thermal insulation board. Cotton, a temperature measuring probe fixed to the surface of the plurality of infrared heating lamps.

Further, the high temperature heating and pressurizing station includes an induction heating mechanism for heating the workpiece at a high temperature.

Further, the induction heating mechanism uses a copper induction coil and is connected to a high-frequency power source.

Further, the preheating pre-pressing station, the high-temperature heating and pressing station and the annealing station respectively comprise a pressing mechanism for applying pressure to the upper mold core and the lower mold core, and each pressing mechanism comprises an upper portion The pressure head, the lower pressure head and the second insulation pad are respectively fixed on the upper pressing head and the lower pressing head, the upper mold core is fixed on the heat insulating pad of the upper pressing head, and the infrared heating plate is fixed on the pressing On the insulation pad of the head.

Further, the continuous workpiece molding apparatus further includes a loading and unloading transmission mechanism for sequentially moving the lower mold core and the workpiece together to the plurality of different processing stations.

Further, the continuous workpiece molding apparatus further includes a temperature detecting control mechanism for controlling the heating temperature of the infrared heating plate and the induction heating mechanism.

Further, the continuous workpiece molding apparatus further includes a cooling plate for cooling the formed workpiece.

Further, the upper mold core and the lower mold core are formed with a curved molding surface to facilitate forming a workpiece having a curved surface.

In addition, it is also necessary to provide a continuous workpiece molding method.

A continuous workpiece molding method comprising the steps of: a) providing a plurality of mold cores fixed to different processing stations and a movable lower mold core, the workpiece is placed on the lower mold core; b) moving the lower mold core and The workpiece is processed at different processing stations, and the workpiece is subjected to different processing operations by the operation of the plurality of upper molds.

The upper mold cores disposed in the continuous workpiece molding apparatus are independently separated and operated, and are not disposed on the same upper mold at the same time, so that the above-mentioned mold repairing time of the conventional multi-cavity molding equipment is avoided. The problem is longer and the process is more complicated; in addition, since the above-mentioned continuous workpiece molding equipment does not need to use a gasket, the complicated process of debugging the gasket is omitted. At the same time, the above continuous molding equipment adopts a mold group in which the upper and lower mold cores are separated independently, and includes a plurality of fixed upper mold cores and a flow type lower mold core, wherein each upper mold core fixed at different stations can flow in the same manner. The mold is closed to facilitate the continuous forming of the workpiece. If one of the molds has a problem, the mold can be quickly replaced, which does not affect the overall forming process. Therefore, the above-mentioned continuous workpiece molding equipment is repaired. The mold time is short and the process is relatively simple, which overcomes the defects of the conventional workpiece molding equipment, thereby improving production efficiency. The above continuous workpiece molding method can continuously form a plurality of workpieces to improve production efficiency.

Referring to FIG. 1 and FIG. 2 together, the continuous workpiece molding apparatus 100 includes a plurality of upper mold cores 130 and a lower mold core 180 and a plurality of different processing stations, and the processing stations may include a preheating preloading station 1 , high temperature heating and pressing station 2, annealing station 3, the upper mold cores 130 are respectively arranged in different processing stations, such as preheating pre-pressing station 1, high temperature heating and pressing station 2, annealing station 3, the workpiece 4 is placed on the lower mold core 180, the lower mold core 180 is sequentially moved to the different processing stations, and the workpiece 4 is processed by the mold opening and clamping operations of the mold core at different processing stations. .

According to the embodiment of the present invention, the structures of different processing stations will be separately described below.

As shown in FIG. 2, the preheating pre-pressing station 1 includes an infrared heating plate 110, an upper mold core 130, and a pressurizing mechanism 140. The pressing mechanism 140 includes an upper pressing head 141, a lower pressing head 143, a driving cylinder 145 and two insulating pads (not shown). The two insulating pads are respectively fixed to the upper pressing head 141 and the lower pressing head 143. The upper mold core 130 is fixed on the heat insulating pad of the upper pressing head 141, and the infrared heating plate 110 is fixed on the heat insulating pad of the lower pressing head 143. Specifically, in the embodiment, the lower pressing head 143 is a carrier plate; the lower mold core 180 is movably placed on the infrared heating plate 110, and the workpiece is placed on the lower mold core 180, and the workpiece is heated by the infrared heating plate 110. The drive cylinder 145 drives the upper ram 141 and the upper die 130 to move toward the lower die 180, applying a small pressure to the workpiece to pre-form the workpiece. After preforming, the workpiece 4 and the lower mold core 180 are moved to the next station. It can be understood that, in a specific embodiment, the preheating pre-pressing station 1 can be multiple to separately preheat the workpiece to preheat processing.

Referring to FIG. 3, each infrared heating plate 110 includes a plurality of infrared heating lamps 111, an insulating thermal insulation plate 113, a casing 115, a thermal insulation cotton 117, and a temperature measuring probe 119. The infrared heating lamp 111 selects a short-wave infrared heating lamp made of a high-quality material as a heat source. The infrared heating lamp 111 can quickly heat the object to 900 ° C for a long time without damage, meeting the heating temperature requirement and the heating rate requirement. The plurality of infrared heating lamps 111 are evenly distributed on one side of the high temperature resistant thermal insulation board 113, and the cold end of the infrared heating lamp 111 passes through the insulating thermal insulation board, and leads are connected to the thermal insulation board 113. The heat insulating plate 113 is fixed to the outer casing 115. Specifically, the outer casing can be made of stainless steel. The heat insulating cotton 117 is filled between the outer casing 115 and the heat insulating board 113. The temperature measuring probe 119 is fixed to the surface of the heat insulating plate 113 near the infrared heat lamp 111. Specifically, in the embodiment, the temperature measuring probe 119 is a thermocouple, and the thermocouple is close to the surface of the object to be heated, and the temperature of the portion to which the object to be heated is irradiated is measured. The temperature measuring probe 119 detects that the temperature signal is transmitted to the intelligent temperature and power control instrument, and according to the feedback temperature signal, the controllable power control unit performs real-time adjustment control on the voltage, current or power output of the infrared heating lamp 111. Thereby, the object to be heated is rapidly heated and heated at a constant temperature. At the same time, the range of the endothermic wavelength of each workpiece is different. Therefore, it is necessary to match the corresponding infrared heating lamp 111 according to the absorption wavelength of the workpiece, which is also one of the best ways to save energy.

Referring to FIG. 4, the high temperature heating and pressing station 2 includes an induction heating mechanism 120, an upper mold core 130 and the above-mentioned pressing mechanism 140. The upper mold core 130 is fixed on the heat insulating pad of the upper pressing head 141 of the pressing mechanism, and The mold core 180 and the workpiece 4 can be placed together on the heat insulating mat of the lower pressing head 143 of the pressurizing mechanism 140. Specifically, in the embodiment, the lower mold core 180 and the workpiece 4 can be raised together into the induction heating mechanism 120 to perform high temperature heating, and the pressing mechanism 140 applies a large pressure to the upper mold core 130, and the upper mold core 130 Cooperating with the lower mold core 180 to form the workpiece.

The induction heating mechanism 140 uses a copper induction coil to generate an induced current in the upper mold core 130 and the lower mold core 180 by a high-frequency power source. When the induced current flows in the upper mold core 130 and the lower mold core 180, heat is generated due to the resistance. Raise the workpiece to the desired temperature.

The annealing station 3 includes an infrared heating plate 110, an upper mold core 130, and a pressurizing mechanism 140. The upper mold core 130 is fixed on the pressing head 141 above the pressing mechanism 140, the lower mold core 180 is placed on the infrared heating plate 110, and the infrared heating plate 110 is fixed on the pressing head 143 under the pressing mechanism 140. The workpiece 4 is placed on the lower mold core 180, and the pressurizing mechanism 140 applies a small pressure to the upper mold to keep the workpiece deformed.

As shown in FIG. 1, the continuous workpiece molding apparatus 100 further includes a loading and unloading transmission mechanism 150. The plurality of upper mold cores 130 are respectively disposed on a plurality of different processing stations, and the lower mold core 180 and the workpiece 4 are moved together by the transmission action of the loading and unloading material transmission mechanism 150 to the preheating pre-pressing station 1, and the high-temperature heating and pressing work Different processing positions of bit 2 and annealing station 3 are performed by different operations of the upper mold core 130. It can be understood that the loading and unloading transmission mechanism 150 can also be other transmission mechanisms, for example, using a transmission pulley or a smart robot. Specifically, in the embodiment, the upper mold core 130 and the lower mold core 180 are formed with a curved molding surface to facilitate forming a workpiece having a curved surface.

The continuous workpiece molding apparatus 100 described above further includes a feed plate 181, a discharge plate 183, and a cooling plate 185. Feed plate 181 is used to place the workpiece to be processed. The discharge plate 183 is used to place the processed workpiece after cooling. The cooling plate 185 is used to cool the formed workpiece. Specifically, in the present embodiment, the cooling plate 185 adopts a water-cooling structure to ensure the cooling rate.

Referring to FIG. 5, the continuous workpiece molding apparatus provided by the present invention further includes a receiving infrared heating plate 110, an induction pressurizing mechanism 120, an upper mold core 130, a lower mold core 180, a pressurizing mechanism 140, and a loading and unloading mechanism 150. The fixing box 170 is provided with a quartz tube in the fixing box 170, and the quartz tube is used for raising the heating temperature limit. A nitrogen gas inlet is opened on the outer side wall of the fixed box 170, and a solenoid valve is arranged in front of the air inlet to realize automatic inflation. A suction port and a pressure relief port are arranged at the lower flange, and both are equipped with a solenoid valve. According to the process, a mechanical pump 171 is connected to the suction port to pre-vacuate the quartz tube, and then the nitrogen gas is protected. After the forming is completed, the protective nitrogen gas is discharged through the pressure relief port. If the pre-vacuum is not required, the valve only needs to be closed. A feed door 172, a discharge door (not shown), and an observation window 173 are also formed on the outer side wall of the fixed case 170.

The upper mold cores disposed in the continuous workpiece molding apparatus are operated separately and independently on the same upper template, so that the above-mentioned mold repairing time of the conventional multi-cavity molding equipment is avoided. The problem is long and the process is cumbersome; in addition, since the above-mentioned continuous workpiece molding equipment does not need to use a gasket, the complicated process of debugging the gasket is omitted. At the same time, the above-mentioned continuous workpiece molding equipment adopts a mold group in which the upper and lower mold cores are separated independently, and includes a plurality of fixed upper mold cores and a flow type lower mold core, wherein each upper mold core fixed at different stations can be the same The mold is closed under the flow to facilitate the continuous forming of the workpiece. If one of the molds has a problem, the mold can be quickly replaced, which does not affect the entire forming process. Therefore, the above continuous workpiece molding equipment The mold repairing time is short and the process is relatively simple, overcoming the defects of the conventional molding equipment, thereby improving production efficiency. The above continuous molding method can continuously form a plurality of workpieces to improve production efficiency.

Referring to FIG. 6, the method for forming a workpiece by using the above continuous workpiece molding apparatus 100 includes the following steps:

In step S201, a plurality of mold cores fixed to different processing stations and a movable lower mold core are provided, and the workpiece is placed on the lower mold core.

Then, the lower mold core and the workpiece are moved to different processing stations, and the workpiece is subjected to different processing operations by the operation of the plurality of upper mold cores. For detailed steps, reference may be made to steps S202 to S205 described below. The different processing stations may include a preheating pre-pressing station, a high temperature heating and press station, an annealing station, and a cooling station.

In step S202, the workpiece is preheated and pre-pressed. After preheating and pre-pressing, the workpiece moves to the next station following the lower mold. Specifically, in the embodiment, in the preheating pre-pressing station, the infrared heating plate can be used to preheat the workpiece, and the workpiece is pressurized by a pressurized structure. After the preheating pre-forming, the workpiece follows the lower mold to move to the high temperature heating and pressurizing station. The workpiece to be processed may be a glass workpiece, and preheating the glass workpiece to prevent the glass workpiece from being suddenly subjected to too high temperature or pressure cracking.

In step S203, the workpiece is subjected to high temperature heating and pressurization, and after the forming, the workpiece moves to the next station following the lower mold. Specifically, in the embodiment, in the high temperature heating and pressing station, the workpiece can be heated at a high temperature by using an induction heating mechanism, and the induction heating mechanism uses a copper induction coil, and the high frequency power source is used to make the upper mold and the lower part. An induced current is generated in the mold core, and an induced current generates heat due to the resistance when flowing in the upper mold and the lower mold to raise the workpiece to a desired temperature. After forming, the workpiece moves to the annealing station following the lower mold.

In step S204, the workpiece is annealed, and after annealing, the workpiece moves to the next station following the lower mold. Specifically, in the embodiment, the workpiece is annealed at the annealing station, and after the annealing, the workpiece moves to the cooling station following the lower mold. The workpiece can be annealed with an infrared heating plate, and a pressurized structure is used to apply a small pressure to the shaped workpiece to maintain the deformation of the workpiece. After the workpiece is annealed, the dimensional progress of the workpiece can be ensured, and the internal stress after the hot bending of the workpiece can be eliminated.

In step S205, the workpiece is cooled. Specifically, in the embodiment, the workpiece may be cooled by using a cooling plate, which adopts a water-cooling structure.

The above continuous workpiece molding method can continuously form a plurality of workpieces to improve production efficiency.

In summary, the present invention has indeed met the requirements of the new patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the patent application of the present invention is not limited thereto. Equivalent modifications or variations made by those skilled in the art in light of the present invention are intended to be included within the scope of the following claims.

1. . . Preheating preloading station

2. . . High temperature heating and pressurizing station

3. . . Annealing station

4. . . Workpiece

100. . . Continuous workpiece molding equipment

110. . . Infrared heating plate

111. . . Infrared heating lamp

113. . . Insulation board

115. . . shell

117. . . Insulation cotton

119. . . Temperature probe

120. . . Induction heating mechanism

130. . . Upper mold

140. . . Pressurizing mechanism

141. . . Upper head

143. . . Lower pressing head

145. . . Drive cylinder

150. . . Loading and unloading transmission mechanism

170. . . Fixed box

172. . . Feeding door

173. . . Observation window

180. . . Lower mold

181. . . Feeding plate

183. . . Stripping plate

185. . . Cooling plate

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partial perspective view of a continuous workpiece molding apparatus of an embodiment.

2 is a schematic structural view of a preheating pre-pressing station of the continuous workpiece molding apparatus shown in FIG. 1.

3 is a schematic structural view of an infrared heating plate of the continuous workpiece molding apparatus shown in FIG. 1.

4 is a schematic structural view of a high temperature heating and pressurizing station of the continuous workpiece molding apparatus shown in FIG. 1.

Figure 5 is a partial perspective view of the continuous workpiece molding apparatus shown in Figure 1.

Figure 6 is a flow chart of a continuous workpiece molding method of an embodiment.

1. . . Preheating preloading station

2. . . High temperature heating and pressurizing station

3. . . Annealing station

100. . . Continuous workpiece molding equipment

130. . . Upper mold

150. . . Loading and unloading transmission mechanism

180. . . Lower mold

181. . . Feeding plate

183. . . Stripping plate

185. . . Cooling plate

Claims (15)

A continuous workpiece molding apparatus, wherein the continuous workpiece molding apparatus comprises: a plurality of upper mold cores respectively disposed at a plurality of different processing stations; and a single lower mold core, wherein the plurality of mold cores move between the mold cores Different processing stations perform different processing operations by the operation of the plurality of upper molds. The continuous workpiece molding apparatus according to claim 1, wherein the plurality of different processing stations comprise a preheating pre-pressing station, a high-temperature heating and pressurizing station, and an annealing station. The continuous workpiece molding apparatus according to claim 2, wherein the preheating pre-pressing station and the annealing station comprise an infrared heating plate for heating the workpiece at a low temperature, and the lower mold core can be placed on The infrared heating plate. The continuous workpiece molding apparatus according to claim 3, wherein the infrared heating plate comprises an outer casing, an insulating thermal insulation board fixed on the outer casing, and a plurality of infrared heating uniformly distributed on one side of the thermal insulation thermal insulation board. a lamp, a heat insulating cotton filled between the outer casing and the heat insulating and heat insulating plate, and a temperature measuring probe fixed on the surface of the heat insulating and heat insulating plate adjacent to the plurality of infrared heat lamps. The continuous workpiece molding apparatus according to claim 2, wherein the high temperature heating and pressurizing station comprises an induction heating mechanism for heating the workpiece at a high temperature. The continuous workpiece molding apparatus according to claim 5, wherein the induction heating mechanism uses a copper induction coil and is connected to a high-frequency power source. The continuous workpiece molding apparatus according to claim 3, wherein the preheating pre-pressing station, the high-temperature heating and pressing station, and the annealing station respectively are used for applying the upper mold core and the lower mold core. The pressurizing mechanism of the pressure, the pressurizing mechanism comprises an upper pressing head, a lower pressing head and two insulating pads, wherein the two insulating pads are respectively fixed on the upper pressing head and the lower pressing head, and the upper mold core is fixed on the upper die On the insulating pad of the upper pressing head, the infrared heating plate is fixed on the insulating pad of the lower pressing head. The continuous workpiece molding apparatus according to claim 7, wherein the continuous workpiece molding apparatus further comprises a loading and unloading transmission mechanism for sequentially moving the lower mold core and the workpiece to the same A plurality of different processing stations. The continuous workpiece molding apparatus of claim 1, wherein the continuous workpiece molding apparatus further comprises a cooling plate for cooling the formed workpiece. The continuous workpiece molding apparatus according to claim 1, wherein the upper mold core and the lower mold core are formed with a curved molding surface to facilitate forming a workpiece having a curved surface. A continuous workpiece molding method, comprising the steps of: a) providing a plurality of mold cores fixed to different processing stations and a movable lower mold core, the workpiece is placed on the lower mold core; b) moving the lower mold core And the workpiece is processed at different processing stations, and the workpiece is subjected to different processing operations by the operation of the plurality of upper molds. The continuous workpiece molding method according to claim 11, wherein the step b) comprises: (1) preheating the workpiece by preheating, and after the preheating preforming, the workpiece follows the lower mold to move to the lower (2) heating and pressurizing the workpiece at a high temperature, after the forming, the workpiece moves to the next station following the lower mold; (3) annealing the workpiece, and after the annealing, the workpiece moves to follow the lower mold to The next station; and (4) cooling the workpiece. The continuous workpiece molding method according to claim 12, wherein the step (1) comprises preheating the workpiece by using an infrared heating plate, and the step (3) comprises annealing the workpiece by using an infrared heating plate. The continuous workpiece molding method according to claim 12, wherein the step (2) comprises: heating the workpiece at a high temperature by using an induction heating mechanism, wherein the induction heating mechanism uses a copper induction coil and is connected by a high-frequency power source. An induced current is generated in the upper mold and the lower mold, and an electric current is generated by the electric resistance when the induced current flows in the upper mold and the lower mold to raise the workpiece to a desired temperature. The continuous workpiece molding method of claim 12, wherein the step (4) comprises cooling the workpiece with a cooling plate, the cooling plate adopting a water-cooling structure.