Hot deep drawing device

Abstract

This invention discloses a hot drawing apparatus, comprising a first die base, a second die base, a heating assembly, and a driving assembly. The first die base includes a first mounting frame, a die cavity, and an ejector mechanism. The die cavity is mounted on the first mounting frame and has a cavity. The ejector mechanism includes a first elastic connector and an ejector structure. The two ends of the first elastic connector are respectively connected to the ejector structure and the first mounting frame, and the ejector structure extends at least partially into the cavity. The second die base includes a second mounting frame and a punch, which is mounted on the second mounting frame. The heating assembly is mounted on the first die base and / or the second die base and is used to heat the workpiece. Driven by the driving assembly, the punch can extend into the cavity of the die cavity to complete the hot drawing of the workpiece. Simultaneously, the punch can push the ejector structure to compress the first elastic connector. After the punch leaves the cavity, the first elastic connector can drive the ejector structure to push the workpiece out of the cavity, facilitating workpiece unloading.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a hot drawing apparatus. Background Technology

[0002] In the production of some workpieces, stamping of the blanks is required, but traditional stamping easily causes defects such as cracks in the blanks. A related technology has emerged: a hot drawing device that heats the blank using a heating element before stamping, thereby reducing the probability of cracking. However, after stamping, the workpiece is prone to becoming stuck in the die, making blanking difficult. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art. This invention provides a hot drawing device that can automatically push the workpiece out of the die after the billet is deep drawn, so as to facilitate the unloading of the workpiece.

[0004] The hot drawing apparatus provided according to an embodiment of the present invention includes a first die holder, a second die holder, a heating assembly, and a driving assembly. The first die holder includes a first mounting frame, a die cavity, and an ejector mechanism. The die cavity is disposed on the first mounting frame and has a cavity. The ejector mechanism includes a first elastic connector and an ejector structure. The two ends of the first elastic connector are respectively connected to the ejector structure and the first mounting frame, and the ejector structure extends at least partially into the cavity. The second die holder includes a second mounting frame and a punch, which is disposed on the second mounting frame. The heating assembly is disposed on the first die holder and / or the second die holder and is used to heat the blank. The driving assembly is connected to the second die holder. Under the drive of the driving assembly, the punch can extend into the cavity and push the ejector structure to compress the first elastic connector.

[0005] The hot drawing apparatus of the present invention has at least the following beneficial effects: when the hot drawing apparatus is working, the blank can be placed between the die and the punch, the heating component can heat the blank, and under the drive of the driving component, the punch can extend into the cavity of the die to complete the hot drawing of the blank. At the same time, the punch can push the ejector structure to compress the first elastic connector. After the punch leaves the cavity, under the elastic force of the first elastic connector, the ejector structure can push the workpiece out of the cavity to facilitate the subsequent unloading of the workpiece.

[0006] According to an embodiment of the present invention, the hot drawing apparatus includes an ejector structure comprising an abutment, a first connecting rod, and an ejector rod. The two ends of the first connecting rod are respectively connected to the ejector rod and the abutment. The two ends of the first elastic connecting rod are respectively connected to the abutment and the first mounting bracket. The ejector rod extends at least partially into the cavity. The abutment abuts against the die cavity to prevent the ejector rod from extending further into the cavity.

[0007] According to the hot drawing apparatus of the present invention, the second die holder further includes a stop structure, which has a through hole that allows the punch to pass through. The stop structure is used to block the workpiece so as to separate the workpiece from the punch.

[0008] According to the hot drawing apparatus of the present invention, a second elastic connector is provided between the stop structure and the second mounting frame. The two ends of the second elastic connector abut against the stop structure and the second mounting frame respectively. During the process of the drive assembly driving the second die base to approach the first die base, the stop structure can abut against the die cavity so that the punch passes through the through hole.

[0009] According to the hot drawing apparatus of the present invention, the first die holder is located above the second die holder, and the material blocking structure includes a pressure plate, the pressure plate is provided with a bearing area for bearing the blank, and a through hole is provided in the bearing area.

[0010] According to the hot drawing apparatus of the present invention, the heating component includes a plurality of heating rods, and the pressing plate is provided with a plurality of mounting holes, with the heating rods corresponding to each other and disposed in the mounting holes.

[0011] According to the hot drawing apparatus of the present invention, the baffle structure further includes an annular positioning member, which is disposed on the pressure plate, and the inner wall of the positioning member and the pressure plate surround to form a bearing area.

[0012] According to the hot drawing apparatus of the present invention, the die is provided with a first cooling channel, the first cooling channel is threaded and surrounds the cavity, and the first cooling channel is used to communicate with the cooling circulation device.

[0013] According to the hot drawing apparatus of the present invention, both the first mounting frame and the second mounting frame are provided with a second cooling channel, which is used to communicate with a cooling circulation device.

[0014] The hot drawing apparatus provided according to an embodiment of the present invention further includes a controller and a sensor, wherein the sensor is used to detect the temperature of the billet, and the controller is electrically connected to the sensor, the heating component and the driving component respectively.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the structure of a hot drawing apparatus according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional view of the hot drawing apparatus shown.

[0019] Figure 3 for Figure 2 A partially enlarged view of the structure at point A of the hot drawing apparatus shown;

[0020] Figure 4 for Figure 2 A partial enlarged view of the structure at point B of the hot drawing device shown.

[0021] Figure label:

[0022] First mold base 100; first mounting bracket 110; second cooling channel 111; die 120; cavity 121; first cooling channel 122; ejector mechanism 130; first elastic connector 131; ejector structure 132; abutment 132a; first connecting rod 132b; ejector rod 132c;

[0023] Second mold base 200; second mounting bracket 210; punch 220; material stop structure 230; pressure plate 231; through hole 231a; heating rod 231b; bearing area 231c; second connecting rod 232; abutment plate 233; positioning element 234; second elastic connecting element 240. Detailed Implementation

[0024] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0028] The following is for reference. Figures 1 to 4 The hot drawing apparatus of the present invention will be described in detail.

[0029] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, a hot drawing apparatus includes a first die holder 100, a second die holder 200, a heating component, and a driving component.

[0030] The first mold base 100 includes a first mounting frame 110, a die 120, and an ejector mechanism 130. The die 120 is mounted on the first mounting frame 110 and has a cavity 121. The ejector mechanism 130 includes a first elastic connector 131 and an ejector structure 132. The two ends of the first elastic connector 131 are connected to the ejector structure 132 and the first mounting frame 110, respectively. The ejector structure 132 extends at least partially into the cavity 121. The second mold base 200 includes a second mounting frame 210 and a punch 220. The punch 220 is mounted on the second mounting frame 210. A heating assembly is mounted on the first mold base 100 and / or the second mold base 200 and is used to heat the blank. A driving assembly is connected to the second mold base 200. Under the drive of the driving assembly, the punch 220 can extend into the cavity 121 and push the ejector structure 132 so that the first elastic connector 131 is in a compressed state.

[0031] For example, such as Figure 1 and Figure 2As shown, the first mold base 100 can be located above the second mold base 200; the ejector mechanism 130 can include a first elastic connector 131 and an ejector structure 132. One end of the first elastic connector 131 is connected to the upper end of the ejector structure 132, and the other end of the first elastic connector 131 is connected to the first mounting bracket 110. Under the elastic force of the first elastic connector 131, the ejector structure 132 extends from the upper end of the cavity 121 into the cavity 121, and the heating component can be installed on the second mold base 200. When the hot drawing device is working, the blank can be placed on the punch 220. The heating component can heat the blank on the punch 220. Driven by the driving component, the punch 220 can move upward and extend into the cavity 121 of the die 120 from below to complete the hot drawing of the blank and form a workpiece. During the process of the punch 220 extending into the cavity 121, the punch 220 can abut against the ejector structure 132 and push the ejector structure 132 upward so that the first elastic connector 131 can be compressed. After the punch 220 leaves the cavity 121, under the elastic force of the first elastic connector 131, the ejector structure 132 can move downward to eject the workpiece in the cavity 121 so as to facilitate the subsequent unloading of the workpiece.

[0032] Specifically, the ejector structure 132 includes an abutment 132a, a first connecting rod 132b, and an ejector 132c. The two ends of the first connecting rod 132b are connected to the ejector 132c and the abutment 132a, respectively. The two ends of the first elastic connecting member 131 are connected to the abutment 132a and the first mounting bracket 110, respectively. The ejector 132c extends at least partially into the cavity 121. The abutment 132a abuts against the die 120 to prevent the ejector 132c from further extending into the cavity 121. For example, as... Figure 2 As shown, the two ends of the first connecting rod 132b are respectively connected to the upper end of the push rod 132c and the lower end of the abutment 132a. The first elastic connecting member 131 can be a first spring, with the lower end of the first spring connected to the upper end of the abutment 132a and the upper end of the first spring connected to the first mounting bracket 110. Under the elastic force of the first spring, the push rod 132c extends into the cavity 121, while the abutment 132a abuts against the die 120 to prevent the push rod 132c from extending further into the cavity 121. By setting the abutment 132a, the first spring can have a certain elastic force in the initial state, thereby making the first spring have a sufficiently large elastic force in the compressed state, so that the push rod 132c can push the workpiece out of the cavity 121.

[0033] In some embodiments of the present invention, reference is made to Figure 1 and Figure 2The second mold base 200 also includes a stop structure 230, which has a through hole 231a allowing the punch 220 to pass through. The stop structure is used to block the workpiece, thereby separating the workpiece from the punch. Understandably, under the elastic force of the first elastic connector 131, the ejector rod 132c can push the workpiece out of the cavity 121. In some cases, the workpiece may get stuck on the punch 220, affecting the unloading of the workpiece. By setting the stop structure 230, during the process of the drive assembly driving the punch 220 downward to leave the through hole 231a on the stop structure 230, the stop structure 230 can block the workpiece, thereby achieving separation between the punch 220 and the workpiece, and facilitating subsequent unloading of the workpiece.

[0034] Furthermore, a second elastic connector 240 is provided between the retaining structure 230 and the second mounting bracket 210. Both ends of the second elastic connector 240 abut against the retaining structure 230 and the second mounting bracket 210, respectively. During the process of the drive assembly driving the second mold base 200 closer to the first mold base 100, the retaining structure 230 can abut against the die 120, allowing the punch 220 to pass through the through hole 231a. For example, as... Figure 2 As shown, the second elastic connector 240 can be a second spring, with its two ends connected to the stop structure 230 and the second mounting bracket 210, respectively. During the process of the drive assembly driving the second mold base 200 closer to the first mold base 100, the stop structure 230 can abut against the die 120, thereby compressing the second spring so that the punch 220 can pass through the through hole 231a on the stop structure 230 and extend into the cavity 121. During the process of the drive assembly driving the second mold base 200 away from the first mold base 100, under the elastic force of the second spring, the punch 220 can retract from the through hole 231a on the stop structure 230, allowing the punch 220 to separate from the workpiece, facilitating subsequent workpiece unloading. The provision of the second elastic connector 240 allows a single drive assembly to simultaneously drive the punch 220 through the through hole 231a of the stop structure 230 and extend into the cavity 121 while driving the second mold base 200 as a whole closer to the first mold base 100.

[0035] Specifically, the first mold base 100 is located above the second mold base 200, and the material-stopping structure 230 includes a pressure plate 231. The pressure plate 231 has a bearing area 231c for bearing the blank, and a through hole 231a is provided in the bearing area 231c. For example, as Figure 2 and Figure 3As shown, the baffle structure 230 includes a pressure plate 231, a second connecting rod 232, and an abutment plate 233. The upper end of the second connecting rod 232 is connected to the pressure plate 231, and the lower end of the second connecting rod 232 is connected to the abutment plate 233. The second connecting rod 232 is slidably mounted on the second mounting bracket 210. The second elastic connecting member 240 can be a second spring. The upper end of the second spring is connected to the abutment plate 233, and the lower end of the second spring is connected to the second mounting bracket 210. The pressure plate 231 is provided with a bearing area 231c, and a through hole 231a is provided in the bearing area 231c. When the hot drawing apparatus is in operation, the blank can be placed in the bearing area 231c of the blank holder 231. Driven by the drive assembly, the second die holder 200 can move upward to approach the first die holder 100, so that the blank holder 231 can abut against the die 120 to press the blank in the bearing area 231c. This reduces the deformation of the blank edge during the insertion of the punch 220 into the cavity 121, thereby improving the quality of the produced workpiece. The second spring provides elastic force for the blank holder 231 to press the blank. Furthermore, for blanks of different specifications, the operator can change the pressing force of the blank holder 231 on the blank edge by replacing the second spring of different specifications, thus improving the applicability of the hot drawing apparatus of this application.

[0036] Further reference Figure 1 and Figure 2 The heating assembly includes several heating rods 231b, and the pressing plate 231 has several mounting holes, with each heating rod 231b corresponding to and positioned within one of the mounting holes. The heating rods 231b can heat the pressing plate 231, which in turn can transfer heat to the blank in the bearing area 231c, thereby heating the blank.

[0037] Further reference Figure 2 and Figure 3 The material-stopping structure 230 also includes an annular positioning element 234, which is disposed on the pressure plate 231. The inner wall of the positioning element 234 and the pressure plate 231 surround each other to form a bearing area 231c. By installing the annular positioning element 234 on the pressure plate 231, the positioning element 234 can position the blank to improve the accuracy of blank processing.

[0038] In some embodiments of the present invention, reference is made to Figure 4The die 120 is provided with a first cooling channel 122, which is threaded and surrounds the cavity 121. The first cooling channel 122 is used to communicate with a cooling circulation device. It is understood that during hot drawing of the blank, the blank temperature can reach approximately 800°C. After hot drawing to form the workpiece, the workpiece temperature is high. By providing the first cooling channel 122 on the die 120, the operator can use the cooling circulation device to circulate cooling medium into the first cooling channel 122 to cool the workpiece, the die 120, and the punch 220. The threaded arrangement of the first cooling channel 122 allows the cooling medium to uniformly cool the die 120, thereby increasing the cooling rate of the workpiece.

[0039] Further reference Figure 1 Both the first mounting bracket 110 and the second mounting bracket 210 are provided with a second cooling channel 111, which is used to communicate with a cooling circulation device. It is understood that during the heating process of the heating assembly on the billet, heat is transferred to the first mounting bracket 110 and the second mounting bracket 210. The first mounting bracket 110 and the second mounting bracket 210 will be exposed to high temperatures for extended periods, which will shorten their service life. By providing the second cooling channel 111 on the first mounting bracket 110 and the second mounting bracket 210, workers can circulate a cooling medium into the second cooling channel 111 through the cooling circulation device to cool the first mounting bracket 110 and the second mounting bracket 210, thereby reducing the damage caused by high temperatures and extending their service life.

[0040] In some embodiments of the present invention, the hot drawing apparatus further includes a controller and a sensor. The sensor is used to detect the temperature of the billet, and the controller is electrically connected to the sensor, the heating component, and the drive component. When the hot drawing apparatus is in operation, the heating component can heat the billet, the sensor can detect the temperature of the billet, and transmit the detected temperature information to the controller. When the sensor detects that the temperature of the billet has reached the preset drawing temperature, the controller can control the drive component to work. Under the drive of the drive component, the first die holder 100 and the second die holder 200 can move closer to each other so that the punch 220 can be inserted into the cavity 121 of the die 120 to complete the hot drawing of the billet.

[0041] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A hot drawing apparatus, characterized in that, include: A first mold base (100) includes a first mounting frame (110), a die (120), and an ejector mechanism (130). The die (120) is mounted on the first mounting frame (110) and has a cavity (121). The ejector mechanism (130) includes a first elastic connector (131) and an ejector structure (132). The two ends of the first elastic connector (131) are connected to the ejector structure (132) and the first mounting frame (110) respectively. The ejector structure (132) extends at least partially into the cavity (121). The second mold base (200) includes a second mounting bracket (210) and a punch (220), the punch (220) being disposed on the second mounting bracket (210); A heating assembly is disposed on the first mold base (100) and / or the second mold base (200) and is used to heat the blank; A driving assembly is connected to the second mold base (200). Under the drive of the driving assembly, the punch (220) can extend into the cavity (121) and push the ejector structure (132) so that the first elastic connector (131) is in a compressed state. The second mold base (200) also includes a stop structure (230), which has a through hole (231a) that allows the punch (220) to pass through. The stop structure (230) is used to block the workpiece so that the workpiece is separated from the punch (220). A second elastic connector (240) is provided between the baffle structure (230) and the second mounting bracket (210). The two ends of the second elastic connector (240) abut against the baffle structure (230) and the second mounting bracket (210) respectively. During the process of the drive assembly driving the second mold base (200) to approach the first mold base (100), the baffle structure (230) can abut against the die (120) so that the punch (220) passes through the through hole (231a).

2. The hot drawing apparatus according to claim 1, characterized in that, The ejector structure (132) includes an abutment (132a), a first connecting rod (132b), and an ejector (132c). The two ends of the first connecting rod (132b) are connected to the ejector (132c) and the abutment (132a) respectively. The two ends of the first elastic connecting member (131) are connected to the abutment (132a) and the first mounting bracket (110) respectively. The ejector (132c) extends at least partially into the cavity (121). The abutment (132a) abuts against the die (120) to prevent the ejector (132c) from extending further into the cavity (121).

3. The hot drawing apparatus according to claim 1, characterized in that, The first mold base (100) is located above the second mold base (200). The material blocking structure (230) includes a pressure plate (231). The pressure plate (231) is provided with a bearing area (231c) for bearing the blank. The through hole (231a) is provided in the bearing area (231c).

4. The hot drawing apparatus according to claim 3, characterized in that, The heating assembly includes a plurality of heating rods (231b), and the pressing plate (231) has a plurality of mounting holes, with each heating rod (231b) corresponding to and located within the mounting holes.

5. A hot drawing apparatus according to claim 3, characterized in that, The baffle structure (230) also includes an annular positioning element (234), which is disposed on the pressure plate (231). The inner wall of the positioning element (234) and the pressure plate (231) surround to form the bearing area (231c).

6. The hot drawing apparatus according to claim 1, characterized in that, The die (120) is provided with a first cooling channel (122), which is threaded and surrounds the cavity (121). The first cooling channel (122) is used to communicate with the cooling circulation device.

7. A hot drawing apparatus according to claim 6, characterized in that, Both the first mounting bracket (110) and the second mounting bracket (210) are provided with a second cooling channel (111), which is used to communicate with the cooling circulation device.

8. The hot drawing apparatus according to claim 1, characterized in that, It also includes a controller and a sensor, the sensor being used to detect the temperature of the billet, and the controller being electrically connected to the sensor, the heating assembly, and the drive assembly, respectively.

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