A copper-tungsten alloy electrical contact production equipment

Abstract

The present invention relates to the technical field of metal powder processing, and in particular to a copper-tungsten alloy electrical contact production equipment. It includes a support frame, a guide rail I, a lower mold, a connecting frame I, etc. The support frame is symmetrically provided with guide rails I, the lower mold is slidably provided between the guide rails I, the lower mold is provided with a slot I, and the connecting frame I is installed on the guide rail I. The present invention places the lower mold and the upper mold that need to be replaced into the guide rails I and II in advance, and then only needs to automatically release the limit and block of the lower mold and the upper mold through the limit mechanism and the blocking mechanism, so that the lower mold and the upper mold can be replaced with the lower mold and the upper mold placed in advance, and the lower mold and the upper mold that have been replaced can be placed in a specified position through the blocking mechanism to prevent deviation, and then the lower mold and the upper mold are automatically limited by the limit mechanism, so that people can conveniently replace the lower mold and the upper mold, which is not only simple to operate, but also saves time and effort.

Description

Technical Field

[0001] The invention relates to the technical field of metal powder processing, and in particular to a copper-tungsten alloy electric contact production device. Background Art

[0002] In power transmission, circuit breakers and various electrical switchgear, copper-tungsten alloy electrical contacts are widely used due to their excellent high temperature resistance, high conductivity, low contact resistance and good resistance to arc erosion. In order to meet the design requirements of different electrical equipment, copper-tungsten alloy electrical contacts usually need to be made into a variety of shapes, including but not limited to round, rectangular, flat and specific complex geometric structures. These diverse requirements put forward higher flexibility and efficiency requirements for the production and manufacturing process.

[0003] At present, when producing copper-tungsten alloy electrical contacts of different shapes, manufacturers generally use powder metallurgy technology, which is to press copper-tungsten alloy powder into special molds and then sinter them into shape. However, although the powder pressing technology is mature, in actual production, each electrical contact has a different shape. Therefore, different molds are usually required to produce different models of products. And each time the mold is replaced, the process involves manual disassembly and installation of fasteners to fix the mold. This process is not only time-consuming, but also has certain requirements on the physical strength and technical proficiency of the operator. In addition, the mold itself is hard, large in size and weight, which further increases the difficulty and time cost of the operation. In addition, the installation of the mold also requires precise alignment to avoid product deviation. Therefore, this series of operations greatly affects the flexibility and overall efficiency of the production line. Summary of the invention

[0004] In view of this, the present invention provides a copper-tungsten alloy electrical contact production device, which can solve the disadvantages that when people use powder metallurgy technology to produce copper-tungsten alloy electrical contacts of different models, the process of replacing the mold is not only cumbersome to operate, but also time-consuming and labor-intensive.

[0005] The technical implementation scheme of the present invention is: a copper-tungsten alloy electrical contact production equipment, including a support frame, and also includes a guide rail I, a lower mold, a connecting frame I, a guide rail II, a fixed frame, a hydraulic cylinder I, a guide rail III, an upper mold, a top plate frame, a connecting plate, a feeding mechanism, a heating mechanism, an ejection mechanism, a limit mechanism and a blocking mechanism, the support frame is symmetrically provided with guide rails I, the lower mold is slidably provided between the guide rails I, the lower mold is provided with a card slot I, the guide rail I is installed with a connecting frame I, the guide rail II is installed on the connecting frame I, the fixed frame is installed on the guide rail II, and the hydraulic cylinder I, the guide rail III, the upper mold, the top plate frame, the connecting plate, the feeding mechanism, the heating mechanism, the ejection mechanism, the limit mechanism and the blocking mechanism, the guide rail I is symmetrically provided with a guide rail ... connecting plate, the feeding mechanism, the heating mechanism, the ejection mechanism, the limit mechanism and the blocking mechanism, the guide rail I is symmetrically provided with a guide rail I, the lower mold is slidably provided between the guide rails I, the lower mold is provided with a card slot The hydraulic cylinder I is installed on the fixed frame, the guide rail III is connected to the telescopic rod of the hydraulic cylinder I, the upper mold is slidably set on the guide rail III, the upper mold is provided with a slot II, a top plate frame is slidably set in the lower mold, and the connecting plate is connected to the top plate frame. The feeding mechanism is used to feed the copper-tungsten alloy powder into the lower mold, the heating mechanism is used to heat the copper-tungsten alloy powder in the lower mold, the ejection mechanism is used to eject the copper-tungsten alloy formed in the lower mold, the limiting mechanism is used to limit the lower mold and the upper mold, and the blocking mechanism is used to block the lower mold and the upper mold.

[0006] More preferably, the feeding mechanism includes a double-rod cylinder, a feeding frame and a feeding pipe, the double-rod cylinder is installed on the guide rail I on one side, the feeding frame is connected to the telescopic rod of the double-rod cylinder, and the feeding pipe is connected to the feeding frame.

[0007] More preferably, the heating mechanism includes heater I and heater II, and heater I and heater II are installed in guide rail I. Heater I is used to heat the copper-tungsten alloy powder in the lower mold, and heater II is used to preheat the next replacement lower mold.

[0008] More preferably, the ejection mechanism includes a connecting frame II, an electric push rod I and a limit frame, the connecting frame II is installed between the guide rails I, the electric push rod I is installed on the connecting frame II, the limit frame is connected to the telescopic rod of the electric push rod I, and the connecting plate is snapped into the limit frame.

[0009] More preferably, the limiting mechanism includes a wedge block, a limiting frame I and a spring I, the wedge block is mounted on a fixed frame, the limiting frame I is slidably arranged on a guide rail III, the limiting frame I is used to limit the upper mold, and the two ends of the spring I are respectively connected to the limiting frame I and the guide rail III.

[0010] More preferably, the limiting mechanism also includes a limiting frame II, a spring II, a tooth plate, a gear and a guide rod I. The limiting frame II is slidably arranged on the guide rail I. The limiting frame II is used to limit the lower mold. The two ends of the spring II are respectively connected to the limiting frame II and the guide rail I. The tooth plate is connected to the limiting frame II. The gear is rotatably installed on the connecting frame II. The tooth plate is meshed with the gear. The guide rod I is connected to the limiting frame II on one side, and the limiting frame I slides on the guide rod I.

[0011] More preferably, the blocking mechanism includes an electric push rod II and a limit plate I, the electric push rod II is installed on a guide rail I on one side, the limit plate I is slidably installed on the guide rail I on the same side as the electric push rod II, and the limit plate I is connected to the telescopic rod of the electric push rod II, and the limit plate I is used to block the lower mold.

[0012] More preferably, the blocking mechanism also includes a guide rod II and a limit plate II, the guide rod II is connected to the limit plate I, the limit plate II is slidably installed on the guide rail III, the limit plate II is used to block the upper mold, and the limit plate II slides on the guide rod II.

[0013] More preferably, a rolling mechanism is also included, which includes an electric push rod III, a push plate, a hydraulic cylinder II, a connecting frame, a rolling roller and a servo motor. The electric push rod III is installed on the guide rail I away from the side of the double-rod cylinder, the push plate is connected to the telescopic rod of the electric push rod III, the hydraulic cylinder II is installed on the connecting frame I, the connecting frame is installed on the telescopic rod of the hydraulic cylinder II, the rolling rollers are rotatably installed in the connecting frame and the guide rail I, the rolling rollers are used to roll the formed copper-tungsten alloy, the servo motors are respectively installed on the connecting frame and the guide rail I, and the output shaft of the servo motor is connected to the rolling rollers.

[0014] The present invention has the following advantages: 1. The present invention places the lower mold and the upper mold that need to be replaced into the guide rails I and II in advance, and then only needs to automatically release the limiting and blocking of the lower mold and the upper mold through the limiting mechanism and the blocking mechanism, so that the lower mold and the upper mold can be replaced with the lower mold and the upper mold that were placed in advance, and the blocking mechanism can make the replaced lower mold and the upper mold be in a specified position to prevent deviation, and then the lower mold and the upper mold are automatically limited by the limiting mechanism. In this way, people can conveniently replace the lower mold and the upper mold, which is not only simple to operate, but also saves time and effort.

[0015] 2. The present invention cooperates with the top plate frame, the connecting plate and the ejection mechanism, and can use the top plate frame to lift the preformed copper-tungsten alloy in the lower mold, thereby facilitating the demoulding of the preformed copper-tungsten alloy from the lower mold.

[0016] 3. The present invention can use rollers to roll the preformed copper-tungsten alloy by setting a rolling mechanism. By rolling the preformed copper-tungsten alloy, the grains can be refined and the strength and toughness of the copper-tungsten alloy can be increased, so that the preformed copper-tungsten alloy can be subsequently processed into a copper-tungsten alloy electrical contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the guide rail II, the fixing frame and the hydraulic cylinder I of the present invention.

[0019] Figure 3 For the present invention Figure 2 Structural separation diagram in .

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the lower mold and the upper mold of the present invention.

[0021] Figure 5 It is a cross-sectional view of the lower mold of the present invention.

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the feeding mechanism and the heating mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the heating mechanism of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the connecting plate, connecting frame II and limiting frame of the present invention.

[0025] Fig. 9 It is a schematic diagram of the three-dimensional structure of the ejection mechanism of the present invention.

[0026] Fig.10 It is a three-dimensional structural schematic diagram of the wedge block, the limit frame I and the guide rod I of the present invention.

[0027] Fig.11 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0028] Fig.12 It is a three-dimensional structural schematic diagram of the connecting frame II, the tooth plate and the gear of the present invention.

[0029] Fig.13 It is a three-dimensional structural schematic diagram of the blocking mechanism and the rolling mechanism of the present invention.

[0030] Fig.14 It is a schematic diagram of the three-dimensional structure of the blocking mechanism of the present invention.

[0031] Fig.15 It is a schematic diagram of the three-dimensional structure of the rolling mechanism of the present invention.

[0032] The markings of the components in the attached drawings are as follows: 1. Support frame, 2. Guide rail I, 3. Lower mold, 301, slot I, 4. Connecting frame I, 5. Guide rail II, 6. Fixed frame, 7. Hydraulic cylinder I, 8. Guide rail III, 9. Upper mold, 901, slot II, 10. Top plate frame, 11. Connecting plate, 12. Double-rod cylinder, 13. Unloading frame, 14. Feed pipe, 15. Heater I, 16. Heater II, 17. Connecting frame II, 1 8. Electric push rod I, 19. Limit frame, 20. Wedge block, 21. Limit frame I, 22. Spring I, 23. Limit frame II, 24. Spring II, 25. Tooth plate, 26. Gear, 27. Guide rod I, 28. Electric push rod II, 29. Limit plate I, 30. Guide rod II, 31. Limit plate II, 32. Electric push rod III, 33. Push plate, 34. Hydraulic cylinder II, 35. Connecting frame, 36. Roller, 37. Servo motor. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment: A copper-tungsten alloy electrical contact production device, see Figure 1-Figure 14As shown, it includes a support frame 1; it also includes a guide rail Ⅰ2, a lower mold 3, a connecting frame Ⅰ4, a guide rail Ⅱ5, a fixed frame 6, a hydraulic cylinder Ⅰ7, a guide rail III8, an upper mold 9, a top plate frame 10, a connecting plate 11, a feeding mechanism, a heating mechanism, an ejection mechanism, a limiting mechanism and a blocking mechanism; two guide rails Ⅰ2 are symmetrically arranged on the top of the support frame 1; a lower mold 3 is slidably arranged between the two guide rails Ⅰ2, and two card slots Ⅰ301 are opened on the front and back sides of the lower mold 3; connecting frames Ⅰ4 are arranged on the left and right sides of the top of the two guide rails Ⅰ2, and the number of connecting frames Ⅰ4 is four; a guide rail Ⅱ5 is installed between the upper sides of the two connecting frames Ⅰ4 on the left, and a guide rail Ⅱ5 is also installed between the upper sides of the two connecting frames Ⅰ4 on the right; the fixed frame 6 is installed between the two guide rails Ⅱ5; the hydraulic cylinder Ⅰ7 is installed on the upper side of the fixed frame 6; the guide rail Ⅲ8 is connected to the hydraulic cylinder Ⅰ7 on the telescopic rod; the upper mold 9 is slidably set on the guide rail Ⅲ8, and two card slots Ⅱ901 are opened on the rear side of the upper mold 9, and the upper mold 9 is located directly above the lower mold 3; a top plate frame 10 is slidably set in the lower mold 3; the connecting plate 11 is connected to the bottom of the top plate frame 10; the feeding mechanism is used to feed the copper-tungsten alloy powder into the lower mold 3; the heating mechanism is used to heat the copper-tungsten alloy powder in the lower mold 3 so that the copper-tungsten alloy powder is sintered and formed; the ejection mechanism is used to eject the copper-tungsten alloy formed in the lower mold 3 so that the formed copper-tungsten alloy can be demolded from the lower mold 3; the limiting mechanism is used to limit the lower mold 3 and the upper mold 9, so as to fix the lower mold 3 and the upper mold 9; the blocking mechanism is used to block the lower mold 3 and the upper mold 9, so that the replaced lower mold 3 and the upper mold 9 stay at the specified position.

[0035] See also Figure 6 As shown, the feeding mechanism includes a double-rod cylinder 12, a feeding frame 13 and a feeding pipe 14; the double-rod cylinder 12 is installed in the middle of the front side of the front guide rail Ⅰ2; the feeding frame 13 is connected to the telescopic rod of the double-rod cylinder 12; one end of the feeding pipe 14 is connected to the feeding frame 13, and the other end of the feeding pipe 14 can be used to connect with the discharge device of the copper-tungsten alloy powder.

[0036] See also Figure 6 and Figure 7As shown, the heating mechanism includes a heater Ⅰ15 and a heater Ⅱ16; the heater Ⅰ15 includes a heating base Ⅰ and a heat pipe Ⅰ, and a heating base Ⅰ is provided in the middle of the bottom of the two guide rails Ⅰ2, and heat pipes Ⅰ are arranged at intervals on the heating base Ⅰ. The heat pipe Ⅰ penetrates into the guide rail Ⅰ2 and then penetrates out to contact the lower mold 3, and heat is transferred to the lower mold 3 through the heating base Ⅰ, so that the lower mold 3 can be heated to sinter the copper-tungsten alloy powder therein; the heater Ⅱ16 includes a heating base Ⅱ and a heat pipe Ⅱ, and a heating base Ⅱ is provided on the right side of the bottom of the two guide rails Ⅰ2, and heat pipes Ⅱ are arranged at intervals on the heating base Ⅱ, and the heat pipe Ⅱ penetrates into the guide rail Ⅰ2 and then extends out. When the next lower mold 3 to be replaced is placed in the guide rail Ⅰ2 and contacts with the heat pipe Ⅱ, the heat can be transferred to the next lower mold 3 to be replaced through the heating base Ⅱ, thereby preheating the next lower mold 3 to be replaced.

[0037] See also Figure 8 and Fig. 9 As shown, the ejection mechanism includes a connecting frame II 17, an electric push rod I 18 and a limit frame 19; the connecting frame II 17 is installed between the bottoms of the two guide rails I 2; the electric push rod I 18 is installed on the connecting frame II 17; the limit frame 19 is connected to the telescopic rod of the electric push rod I 18, the connecting plate 11 is inserted into the limit frame 19, and two inclined blocks are arranged on the right side of the limit frame 19.

[0038] See also Figure 10-12 As shown, the limiting mechanism includes a wedge block 20, a limiting frame Ⅰ21, a spring Ⅰ22, a limiting frame Ⅱ23, a spring Ⅱ24, a tooth plate 25, a gear 26 and a guide rod Ⅰ27; the wedge block 20 is installed at the lower rear side of the fixed frame 6; the limiting frame Ⅰ21 is slidably arranged at the rear side of the guide rail Ⅲ8, and the front side of the limiting frame Ⅰ21 is inserted into the slot Ⅱ901 of the upper mold 9, so that the limiting frame Ⅰ21 limits the upper mold 9; the two ends of the spring Ⅰ22 are respectively connected to the limiting frame Ⅰ21 and the guide rail Ⅲ8; the two limiting frames Ⅱ23 are respectively slidably arranged on the two guide rails Ⅰ2, and the two limiting frames Ⅱ23 are respectively located at the front and rear sides of the lower mold 3, and the two limiting frames Ⅰ ...1 are respectively located at the front and rear sides of the lower mold 3, and the two limiting frames Ⅰ21 are respectively located at the front and rear sides of the lower mold The sides of the positioning frames Ⅱ23 that are close to each other are respectively inserted into the slots Ⅰ301 on the front and rear sides of the lower mold 3, so that the limiting frame Ⅱ23 limits the lower mold 3; the two ends of the spring Ⅱ24 are respectively connected to the limiting frame Ⅱ23 and the guide rail Ⅰ2; the left and right sides of the bottom of the two limiting frames Ⅱ23 are connected with tooth plates 25, and the number of tooth plates 25 is four; the left and right sides of the upper part of the connecting frame Ⅱ17 are rotatably set with gears 26, the two tooth plates 25 on the left are meshed with the gears 26 on the left, and the two tooth plates 25 on the right are meshed with the gears 26 on the right; the guide rod Ⅰ27 is connected to the limiting frame Ⅱ23 on the rear side, and the limiting frame Ⅰ21 slides on the guide rod Ⅰ27.

[0039] See also Fig.13 and Fig.14As shown, the blocking mechanism includes an electric push rod II 28, a limit plate I 29, a guide rod II 30 and a limit plate II 31; the electric push rod II 28 is installed on the rear side of the guide rail I 2; the limit plate I 29 is slidably installed on the guide rail I 2 on the rear side, and the limit plate I 29 is connected to the telescopic rod of the electric push rod II 28, and the limit plate I 29 is used to block the lower mold 3; the guide rod II 30 is connected to the rear side of the limit plate I 29, and the limit plate II 31 is slidably installed on the rear side of the guide rail III 8, and the limit plate II 31 is used to block the upper mold 9, and the limit plate II 31 slides on the guide rod II 30.

[0040] When in use, the other end of the feed pipe 14 is docked with the discharge device of the copper-tungsten alloy powder, and then the double-rod cylinder 12 is used to drive the blanking frame 13 to move backward until the blanking frame 13 is directly above the lower mold 3, and then the copper-tungsten alloy powder is fed into the lower mold 3 through the feed pipe 14 by the discharge device, so as to load the copper-tungsten alloy powder. After an appropriate amount of copper-tungsten alloy powder is added to the lower mold 3, the blanking frame 13 is driven forward and reset by the double-rod cylinder 12, and then the guide rail III8 and the upper mold 9 are driven downward by the hydraulic cylinder I7 to make the upper mold 9 contact with the lower mold 3, so that the upper mold 9 extrude the copper-tungsten alloy powder in the lower mold 3, and at the same time, the lower mold 3 is heated and heated by the heater I15, so as to press and sinter the copper-tungsten alloy powder in the lower mold 3, so that the copper-tungsten alloy powder is made into a preformed copper-tungsten alloy through pressing and sintering; then the guide rail III8 and the upper mold 9 are driven upward and reset by the hydraulic cylinder I7 to make the upper mold 3 The mold 9 is separated from the lower mold 3, and then the electric push rod Ⅰ18 drives the limit frame 19 to move upward, so that the limit frame 19 drives the connecting plate 11 and the top plate frame 10 to move upward (until the top of the top plate frame 10 is flush with the top of the guide rail Ⅰ2), so that the top plate frame 10 lifts the preformed copper-tungsten alloy in the lower mold 3, and then the preformed copper-tungsten alloy is demolded from the lower mold 3, and then the double-rod cylinder 12 drives the blanking frame 13 to move backward, so that the blanking frame 13 pushes the top plate frame 1 0 moves the preformed copper-tungsten alloy backward to the top of the guide rail Ⅰ2 on the rear side, and then drives the unloading frame 13 to move forward and reset through the double-rod cylinder 12, and drives the limit frame 19 to move downward and reset through the electric push rod Ⅰ18, so that the limit frame 19 drives the connecting plate 11 and the top plate frame 10 to move downward and reset, and finally the worker takes the preformed copper-tungsten alloy from the top of the guide rail Ⅰ2 on the rear side for subsequent processing, so that the preformed copper-tungsten alloy can be formed into the final shape of the electrical contact through subsequent processing;

[0041] When in use, the lower mold 3 that needs to be replaced can be pushed from right to left in advance between the guide rails Ⅰ2, so that the lower mold 3 that needs to be replaced contacts the heat pipe Ⅱ of the heater Ⅱ16, and then the heater Ⅱ16 is used to preheat the lower mold 3 that needs to be replaced, and the upper mold 9 that needs to be replaced is pushed from right to left in advance into the guide rail Ⅱ5; when the lower mold 3 and the upper mold 9 need to be replaced, the guide rail Ⅲ8 and the upper mold 9 are driven to move upward by the hydraulic cylinder Ⅰ7, so that the guide rail Ⅲ8 is docked with the guide rail Ⅱ5, and at the same time, the guide rail Ⅲ8 will drive the limit frame Ⅰ21 to move upward, and when the limit frame Ⅰ21 contacts the wedge block 20, the wedge block 20 will squeeze the limit frame Ⅰ21 to move backward, and the spring Ⅰ22 will stretch, so that the front side of the limit frame Ⅰ21 moves from the card slot Ⅱ of the upper mold 9 901, so that the limit frame Ⅰ21 releases the limit on the upper mold 9, and at the same time, the limit frame Ⅰ21 will drive the guide rod Ⅰ27, the limit frame Ⅱ23 on the rear side and the toothed plate 25 on the rear side to move backward, the spring Ⅱ24 on the rear side is stretched, and the toothed plate 25 on the rear side will drive the toothed plate 25 on the front side to move forward through the gear 26, thereby driving the limit frame Ⅱ23 on the front side to move forward, and the spring Ⅱ24 on the front side is stretched, so that the limit frames Ⅱ23 on both sides of the front and rear leave the slot Ⅰ301 of the lower mold 3, so that the limit frame Ⅱ23 releases the limit on the lower mold 3, and then the electric push rod Ⅱ28 drives the limit plate Ⅰ29, the guide rod Ⅱ30 and the limit plate Ⅱ31 to move backward, so that the limit plate Ⅰ29 is separated from the lower mold 3, and the limit plate Ⅱ31 is separated from the upper mold After that, the lower mold 3 can be pushed out from the guide rail Ⅰ2 from the right to the left, and then the upper mold 9 can be pushed out from the guide rail Ⅲ8 and the guide rail Ⅱ5 from the right to the left, and then the electric push rod Ⅱ28 drives the limit plate Ⅰ29, the guide rod Ⅱ30 and the limit plate Ⅱ31 to move forward and reset, and then the lower mold 3 to be replaced is pushed to the left in the guide rail Ⅰ2 until the lower mold 3 to be replaced contacts with the limit plate Ⅰ29, so that the limit plate Ⅰ29 blocks the lower mold 3 to be replaced, so that the lower mold 3 to be replaced stays at the specified position, and then the previous lower mold 3 is replaced, and then the upper mold 9 to be replaced is pushed to the left in the guide rail Ⅱ5 and the guide rail Ⅲ8, until the upper mold 9 to be replaced contacts with the limit plate Ⅱ31, so that the limit plate Ⅱ31 blocks the upper mold 9 that needs to be replaced, so that the upper mold 9 that needs to be replaced stays at the specified position, and then the previous upper mold 9 is replaced. After that, the guide rail Ⅲ8 and the upper mold 9 are driven by the hydraulic cylinder Ⅰ7 to move downward and reset, so that the guide rail Ⅲ8 drives the limit frame Ⅰ21 to move downward and reset. When the limit frame Ⅰ21 is separated from the wedge block 20, the spring Ⅰ22 and the spring Ⅱ24 return to their original state, and the spring Ⅰ22 drives the limit frame Ⅰ21 to move forward and reset, so that the front side of the limit frame Ⅰ21 is inserted into the slot Ⅱ901 of the replaced upper mold 9, so that the limit frame Ⅰ21 limits the replaced upper mold 9, and at the same time, the limit frame Ⅰ21 will drive the guide rod Ⅰ27, the rear limit frame Ⅱ23 and the rear tooth plate 25 to move forward and reset.The toothed plate 25 at the rear side drives the toothed plate 25 at the front side to move backward through the gear 26, thereby driving the limiting frame Ⅱ23 at the front side to move backward, and then the limiting frames Ⅱ23 at both the front and rear sides are both inserted into the slot Ⅰ301 of the replaced lower mold 3, so that the limiting frames Ⅱ23 limit the replaced lower mold 3. In this way, the replacement of the lower mold 3 and the upper mold 9 can be completed, which is not only simple to operate, but also time-saving and labor-saving.

[0042] See also Fig.13 and Fig.15 As shown, it also includes a rolling mechanism, which includes an electric push rod III 32, a push plate 33, a hydraulic cylinder II 34, a connecting frame 35, a roller 36 and a servo motor 37; the electric push rod III 32 is installed on the right side of the top of the rear guide rail I 2; the push plate 33 is connected to the telescopic rod of the electric push rod III 32; the hydraulic cylinder II 34 is installed on the rear side of the connecting frame I 4 on the left rear side; the connecting frame 35 is installed on the telescopic rod of the hydraulic cylinder II 34; rollers 36 are rotated at intervals on the inner side of the connecting frame 35 and the left side of the upper part of the rear guide rail I 2, and the rollers 36 are used to roll the formed copper-tungsten alloy; two servo motors 37 are respectively installed on the right side of the rear side of the connecting frame 35 and the rear side of the rear guide rail I 2, and the two servo motors 37 are distributed up and down, and the output shaft of the upper servo motor 37 is connected to the rightmost roller 36 in the connecting frame 35, and the output shaft of the lower servo motor 37 is connected to the rightmost roller 36 in the rear guide rail I 2.

[0043] When in use, according to the specific height of the preformed copper-tungsten alloy, the hydraulic cylinder II 34 drives the connecting frame 35 to move up and down, so as to adjust the distance between the connecting frame 35 and the guide rail I2 (so that when the preformed copper-tungsten alloy passes between the connecting frame 35 and the roller 36 in the guide rail I2, the roller 36 can effectively roll the preformed copper-tungsten alloy). After the adjustment, when the unloading frame 13 pushes the preformed copper-tungsten alloy backward to the top of the rear guide rail I2, the electric push rod III 32 can drive the push plate 33 to move leftward, so that the push plate 33 pushes the preformed copper-tungsten alloy between the connecting frame 35 and the roller 36 in the guide rail I2. , so that the roller 36 rolls the preformed copper-tungsten alloy (rolling the preformed copper-tungsten alloy can refine the grains and increase the strength and toughness of the copper-tungsten alloy), and at the same time, the corresponding roller 36 is driven to rotate by the servo motor 37, so that the corresponding roller 36 rolls the preformed copper-tungsten alloy while conveying the preformed copper-tungsten alloy to the left. When the preformed copper-tungsten alloy leaves between the connecting frame 35 and the roller 36 in the guide rail Ⅰ2 and completes rolling, the electric push rod Ⅲ32 drives the push plate 33 to move to the right and reset. Finally, the worker takes the rolled copper-tungsten alloy away from the top of the rear guide rail Ⅰ2 for subsequent processing.

[0044] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A copper-tungsten alloy electrical contact production device, comprising a support frame (1), characterized in that: The supporting frame (1) further comprises a guide rail I (2), a lower mold (3), a connecting frame I (4), a guide rail II (5), a fixed frame (6), a hydraulic cylinder I (7), a guide rail III (8), an upper mold (9), a top plate frame (10), a connecting plate (11), a feeding mechanism, a heating mechanism, an ejection mechanism, a limiting mechanism and a blocking mechanism. The supporting frame (1) is symmetrically provided with guide rails I (2), a lower mold (3) is slidably provided between the guide rails I (2), a slot I (301) is provided on the lower mold (3), a connecting frame I (4) is installed on the guide rail I (2), the guide rail II (5) is installed on the connecting frame I (4), and the fixed frame (6) is mounted on the guide rail II (5), the hydraulic cylinder I (7) is mounted on the fixed frame (6), the guide rail III (8) is connected to the telescopic rod of the hydraulic cylinder I (7), the upper mold (9) is slidably arranged on the guide rail III (8), the upper mold (9) is provided with a slot II (901), a top plate frame (10) is slidably arranged in the lower mold (3), a connecting plate (11) is connected to the top plate frame (10), a feeding mechanism is used to feed the copper-tungsten alloy powder into the lower mold (3), a heating mechanism is used to heat the copper-tungsten alloy powder in the lower mold (3), and an ejection mechanism is used to eject the copper-tungsten alloy powder formed in the lower mold (3). The metal is ejected, the limiting mechanism is used to limit the lower mold (3) and the upper mold (9), and the blocking mechanism is used to block the lower mold (3) and the upper mold (9); the feeding mechanism includes a double-rod cylinder (12), a feeding frame (13) and a feeding pipe (14), the double-rod cylinder (12) is installed on one side of the guide rail I (2), the feeding frame (13) is connected to the telescopic rod of the double-rod cylinder (12), and the feeding pipe (14) is connected to the feeding frame (13); the ejection mechanism includes a connecting frame II (17), an electric push rod I (18) and a limiting frame (19), the connecting frame II (17) is installed Between the guide rails I (2), the electric push rod I (18) is installed on the connecting frame II (17), the limit frame (19) is connected to the telescopic rod of the electric push rod I (18), and the connecting plate (11) is inserted into the limit frame (19); the limit mechanism includes a wedge block (20), a limit frame I (21) and a spring I (22); the wedge block (20) is installed on the fixing frame (6), the limit frame I (21) is slidably arranged on the guide rails III (8), the limit frame I (21) is used to limit the upper mold (9), and the two ends of the spring I (22) are respectively connected to the limit frame I (21) and the guide rails III (8);The limiting mechanism further comprises a limiting frame II (23), a spring II (24), a tooth plate (25), a gear (26) and a guide rod I (27). The limiting frame II (23) is slidably arranged on the guide rail I (2). The limiting frame II (23) is used to limit the lower mold (3). Both ends of the spring II (24) are respectively connected to the limiting frame II (23) and the guide rail I (2). The tooth plate (25) is connected to the limiting frame II (23). The gear (26) is rotatably mounted on the connecting frame II (17). The tooth plate (25) meshes with the gear (26). The guide rod I (27) is connected to the limiting frame II (23) on one side. 23), the limit frame I (21) slides on the guide rod I (27); the limit frame (19) is driven to move upward by the electric push rod I (18), so that the limit frame (19) drives the connecting plate (11) and the top plate frame (10) to move upward until the top of the top plate frame (10) is flush with the top of the guide rail I (2), so that the top plate frame (10) lifts the preformed copper-tungsten alloy in the lower mold (3), and then the preformed copper-tungsten alloy is demolded from the lower mold (3), and then the double-rod cylinder (12) drives the unloading frame (13) to move backward, so that the unloading frame (13) pushes the top plate frame The preformed copper-tungsten alloy on (10) moves backward to the top of the guide rail I (2) on the rear side; the guide rail III (8) and the upper mold (9) are driven upward by the hydraulic cylinder I (7) to dock the guide rail III (8) with the guide rail II (5); at the same time, the guide rail III (8) drives the limit frame I (21) to move upward. When the limit frame I (21) contacts the wedge block (20), the wedge block (20) squeezes the limit frame I (21) to move backward, and the spring I (22) is stretched to make the front side of the limit frame I (21) leave the slot II (901) of the upper mold (9), so that the limit frame I (21) is aligned with the wedge block (20). The upper mold (9) is released from the limit, and at the same time, the limit frame I (21) drives the guide rod I (27), the rear limit frame II (23) and the rear tooth plate (25) to move backward, and the rear spring II (24) is stretched, and the rear tooth plate (25) drives the front tooth plate (25) to move forward through the gear (26), thereby driving the front limit frame II (23) to move forward, and the front spring II (24) is stretched, so that the limit frames II (23) on both sides of the front and rear are separated from the slot I (301) of the lower mold (3), so that the limit frame II (23) releases the limit on the lower mold (3). ; 2. A copper-tungsten alloy electrical contact production equipment according to claim 1, characterized in that: The heating mechanism comprises a heater I (15) and a heater II (16). The heater I (15) and the heater II (16) are installed in the guide rail I (2). The heater I (15) is used to heat the copper-tungsten alloy powder in the lower mold (3), and the heater II (16) is used to preheat the next replacement lower mold (3).

3. A copper-tungsten alloy electrical contact production equipment according to claim 2, characterized in that: The blocking mechanism comprises an electric push rod II (28) and a limit plate I (29), wherein the electric push rod II (28) is mounted on one side of the guide rail I (2), and the limit plate I (29) is slidably mounted on the guide rail I (2) on the same side as the electric push rod II (28), and the limit plate I (29) is connected to the telescopic rod of the electric push rod II (28), and the limit plate I (29) is used to block the lower mold (3).

4. A copper-tungsten alloy electrical contact production equipment according to claim 3, characterized in that: The blocking mechanism further comprises a guide rod II (30) and a limit plate II (31), wherein the guide rod II (30) is connected to the limit plate I (29), and the limit plate II (31) is slidably mounted on the guide rail III (8), and the limit plate II (31) is used to block the upper mold (9), and the limit plate II (31) slides on the guide rod II (30).

5. A copper-tungsten alloy electrical contact production equipment according to claim 4, characterized in that: The invention also comprises a rolling mechanism, which comprises an electric push rod III (32), a push plate (33), a hydraulic cylinder II (34), a connecting frame (35), a roller (36) and a servo motor (37). The electric push rod III (32) is mounted on a guide rail I (2) at a side away from the double-rod cylinder (12). The push plate (33) is connected to the telescopic rod of the electric push rod III (32). The hydraulic cylinder II (34) is mounted on a connecting frame I (4). The connecting frame (35) is mounted on the telescopic rod of the hydraulic cylinder II (34). The roller (36) is rotatably mounted in the connecting frame (35) and the guide rail I (2). The roller (36) is used to roll the formed copper-tungsten alloy. The servo motor (37) is mounted on the connecting frame (35) and the guide rail I (2) respectively, and the output shaft of the servo motor (37) is connected to the roller (36).

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