A forging and forming equipment for a pick body

Abstract

The present invention relates to the field of forging technology, specifically to a forging and forming equipment for a pick body, the forging and forming equipment comprises a machine base, an intermediate platform, a lifting drive, a forging assembly, a force-applying assembly, an intermediate die set, and a forming die set, the machine base vertically extends upward from the side to install the intermediate platform, a lifting drive is arranged on the intermediate platform, the forging assembly is vertically slidably installed on the intermediate platform, a force-applying assembly is arranged between the lifting drive and the forging assembly, the intermediate die set and the forming die set are arranged between the forging assembly and the machine base, the forging and forming equipment forges the bar stock into the pick body, the shape of the intermediate die combination model cavity is the shape of the intermediate body between the bar stock and the pick body, and the shape of the forming die combination model cavity is the shape of the pick body. One of the intermediate die set and the forming die set is located above the forging assembly and the other is located below the forging assembly, and the side of the forging assembly is connected to the lifting drive. The force-applying assembly has a structure for instantaneously changing the direction of the force, and the lifting drive is a hydraulic force.

Description

Technical Field

[0001] The invention relates to the technical field of forging, in particular to a pick body forging and forming equipment. Background Art

[0002] Picks are cutting tools widely used in mining machinery. Generally, the pick body is used as the basis, and carbide is set on the head. The carbide head is in direct contact with rocks, soil, etc., while the pick body is set with relevant installation and fixing structures at the root to be assembled with mining machinery. The pick body needs to have high strength and toughness to withstand the harsh working conditions of the mine.

[0003] There are two common manufacturing methods for the pick body: the pick body and the head carbide composite casting, or the pick body is cast or forged and then the head is welded with carbide. Among them, the pick body forging and welding method has higher pick strength, more uniform material inside the pick body, and consistent overall toughness. In the prior art, the raw material of the forging material is a bar cut into a certain length, which is forged and formed once. The single deformation is large, and material deformation and local tearing are prone to occur, and the probability of defects is high. Summary of the invention

[0004] The object of the present invention is to provide a pick body forging and forming device to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A forging and forming device for a pick body, comprising a machine base, an intermediate platform, a lifting drive, a forging assembly, a force-applying assembly, an intermediate die set, and a forming die set. The machine base extends vertically upward from the side to install the intermediate platform, a lifting drive is arranged on the intermediate platform, the forging assembly is vertically slidably installed on the intermediate platform, a force-applying assembly is arranged between the lifting drive and the forging assembly, and the intermediate die set and the forming die set are arranged between the forging assembly and the machine base.

[0007] The forging and forming equipment forges the bar material into a pick body, the shape of the intermediate die combination model cavity is an intermediate shape between the bar material and the pick body, and the shape of the forming die combination model cavity is the shape of the pick body.

[0008] This device divides forging into two steps. The original bar material undergoes multiple deformations before becoming a pick body to prevent excessive deformation at one time from causing tearing of the metal structure. The device has multiple forging deformation positions. When in use, the material is transferred between workstations through external operators or manipulators, and all forging operations are completed in this equipment. Half of the intermediate die set and the forming die set are installed on the machine base, and the other half is installed on the forging assembly. The forging assembly is raised and lowered to complete the mold closing and mold separation processes.

[0009] One of the middle module and the forming module is located above the forging assembly and the other is located below the forging assembly. The side of the forging assembly is connected to the lifting drive transmission.

[0010] Two forging dies are installed at both ends of the forging assembly. The forging assembly is regarded as a forging operation in each stroke of rising and falling, which distributes the force required for each operation and makes full use of each stroke to increase the operation frequency and improve efficiency. If the two forging positions are set on the same side of the forging assembly, the force required for a single action is greater, and the time required for the lifting drive to accumulate the forging pressure will also increase.

[0011] The force-applying component has a structure that instantly changes the direction of the force, and the lifting drive is a hydraulic force.

[0012] The lifting drive hydraulic action provides a greater force per unit volume. When the forging assembly is at the lower limit position, that is, the forming die set below is in the mold closing state, the force of the lifting drive driving the forging assembly to rise is first accumulated in the force-applying assembly. After accumulating to a certain extent, the original downward force of the force-applying assembly on the forging assembly will be transformed into an upward force at a certain moment, allowing the forging assembly to rise quickly and complete the upward movement. The upper intermediate die is combined forging to forge the bar into an intermediate shape. The force-applying assembly isolates the lifting drive and the forging assembly, allowing the lifting drive to have a longer force preparation time, while the forging assembly releases the energy accumulated in the force-applying assembly in a very short time, increasing the impact force when the intermediate die set and the forming die set are combined, and the forging process is realized on a smaller forging assembly movement stroke.

[0013] The lifting drive includes a cylinder and a cylinder, the forging assembly includes an intermediate rod and a mounting head, the force-applying assembly includes a first rod member, a second rod member, and a spring, the cylinder is vertically mounted on the intermediate platform, the end of the cylinder output shaft is connected to the cylinder, the radial outer surface of the cylinder is slidably mounted on the inner wall of the intermediate platform, the intermediate rod is vertically slidably mounted on the intermediate platform, mounting heads are respectively arranged at both ends of the intermediate rod, half of the intermediate module and the half-mold of the forming module are respectively mounted on the two mounting heads, one end of the first rod member is hinged to the inner wall of the cylinder, the hinge axis of the first rod member and the cylinder is along the horizontal direction, one end of the second rod member is hinged to the side wall of the intermediate rod, the hinge axis of the second rod member and the intermediate rod is along the horizontal direction, the ends of the first rod member and the second rod member that are close to each other are axially slidably plugged, the first rod member and the second rod member are respectively provided with limiting steps, the spring is mounted on the first rod member and the second rod member, the two ends of the spring are against the limiting steps, there are two or more force-applying assemblies, and the circumference of the force-applying assemblies is evenly distributed around the intermediate rod.

[0014] This equipment uses a swinging spring as a force storage component and a component that changes the direction of the force. When the middle rod is in the upper limit position, the cylinder is in an extended state, the cylinder is also in a lower position, the second rod connected to the middle rod is higher than the first rod, the intermediate die above the forging assembly is in a closed die state, the cylinder output shaft is recovered, the cylinder moves up, and the spring is gradually compressed. However, as long as the second rod is higher than the first rod, the force acting on the middle rod is upward until the spring reaches the maximum compression, that is, when the first rod and the second rod are horizontal, at this time, a slight further upward movement of the cylinder causes the middle rod to be subjected to a downward force, and the middle rod begins to rapidly descend to the lower limit position, completing the forging action at the forming die. After the intermediate in the intermediate die is taken out and the workpiece is replaced, the cylinder output shaft is extended again, the cylinder descends, the first rod and the second rod cross the horizontal position, and the middle is high again, and the surroundings are low, and the middle rod rises rapidly, and the cycle continues.

[0015] The cross section of the contact surface between the intermediate rod and the intermediate platform in sliding connection is non-circular, and the cross section of the contact surface between the cylinder and the intermediate platform in sliding connection is non-circular.

[0016] The circular cross-section may cause the middle rod or the cylinder to rotate, thereby causing the first rod and the second rod to be misaligned and twisted.

[0017] The spring is a wave spring.

[0018] The wave spring has uniform elastic force in the circumferential direction and more material. Under the same cylindrical size, more material stores and releases elastic potential energy, and a higher elastic coefficient can be selected.

[0019] The middle die set and the forming die set can be detachably mounted on the forging assembly and the machine base.

[0020] The die set can be easily replaced to forge pick bodies of different sizes and shapes.

[0021] The middle mold group includes a first half mold and a second half mold. The first half mold is installed on the machine base, and the second half mold is installed on the mounting head. Electrodes are respectively arranged on the bottom surfaces of the cavities of the first half mold and the second half mold, and the two electrodes are connected to an external alternating voltage.

[0022] After the intermediate is formed in the intermediate mold, both ends are in contact with the electrodes, and alternating current passes through the intermediate. The skin effect causes a large amount of current to flow only from the surface of the intermediate, heating the surface of the intermediate, softening the lattice, and making the outer metal of the intermediate easier to forge and deform in the next forging process.

[0023] The middle die and the forming die are heated to the warm forging temperature. The pick body is small in size and does not require hot forging to greatly reduce the difficulty of deformation.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention sets two forging deformation positions, so that the process of forming the pick body from the raw material bar is divided into two steps, reducing the risk of damage caused by one deformation, and setting forging positions at both ends of the forging component to fully utilize each movement stroke and also share the force required for a single time. The force-applying component applies force from the side to the forging component, and the force has an upper and lower relationship that is swapped at a certain moment. A large amount of potential energy can be accumulated in the force-applying component and then released, and the lifting stroke of the forging component can be reduced. An electrode is set in the intermediate module and current is passed into the intermediate body to quickly heat the outer surface of the intermediate body. After the work station is transferred in time, the intermediate body is forged into the pick body by the forming module to complete the complete forging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the deformation process of the workpiece processed by the present invention;

[0027] Figure 2 It is a schematic diagram of the appearance structure of the present invention;

[0028] Figure 3 It is a schematic cross-sectional view of the internal structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the transmission relationship of the lifting drive, forging assembly, and force application assembly of the present invention;

[0030] Figure 5 yes Figure 4 A partial view in FIG.

[0031] Figure 6 It is a structural schematic diagram of the intermediate module of the present invention;

[0032] In the figure: 1. base; 2. middle platform; 3. lifting drive; 31. oil cylinder; 32. cylinder; 4. forging assembly; 41. middle rod; 42. mounting head; 5. force assembly; 51. first rod; 52. second rod; 53. spring; 54. limiting step; 6. middle die; 61. first half die; 62. second half die; 7. forming die; 8. electrode; 91. bar; 92. intermediate body; 92. pick body. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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] A forging and forming device for a pick body, comprising a machine base 1, an intermediate platform 2, a lifting drive 3, a forging assembly 4, a force-applying assembly 5, an intermediate module 6, and a forming module 7. The machine base 1 extends vertically upward from the side to install the intermediate platform 2, the lifting drive 3 is arranged on the intermediate platform 2, the forging assembly 4 is vertically slidably installed on the intermediate platform 2, the force-applying assembly 5 is arranged between the lifting drive 3 and the forging assembly 4, and the intermediate module 6 and the forming module 7 are arranged between the forging assembly 4 and the machine base 1.

[0035] The forging and forming equipment forges the bar 91 into a pick body 93 , the middle die set 6 forms a mold cavity shape of an intermediate body 92 between the bar 91 and the pick body 93 , and the forming die set 7 forms a mold cavity shape of the pick body 93 .

[0036] like Figure 1 , 2 As shown in Figure 3, the device divides the forging into two steps. The original bar material 91 undergoes multiple deformations before becoming the pick body 93. To prevent the metal structure from being torn due to excessive deformation at one time, the device has multiple forging deformation positions. When in use, the material is transferred between workstations through an external operator or a manipulator, and all forging operations are completed in the device. Half of the intermediate die set 6 and the forming die set 7 are installed on the machine base 1, and the other half are installed on the forging assembly 4. The forging assembly 4 is raised and lowered to complete the mold closing and mold opening processes.

[0037] One of the middle module 6 and the forming module 7 is located above the forging assembly 4 and the other is located below the forging assembly 4 . The side surface of the forging assembly 4 is driven by the lifting drive 3 .

[0038] like Figure 3 As shown, two forging dies are respectively installed at both ends of the forging component 4. The forging component 4 is used as a forging operation in each of the ascending and descending strokes, which distributes the force required for each operation and makes full use of each action stroke to increase the operation rhythm frequency and improve efficiency. If the two forging positions are set on the same side of the forging component 4, the force required for a single action is greater, and the time required for the lifting drive 3 to accumulate the forging pressure will also increase.

[0039] The force-applying component 5 has a structure for instantaneously changing the direction of the force, and the lifting drive 3 is a hydraulic force.

[0040] like Figure 3, 4 As shown, the lifting drive 3 is hydraulically acted, and the force provided per unit volume is greater. In order to facilitate the description of the upper and lower relationships in the subsequent discussion of this application, according to the placement orientation in the figure, the intermediate module 6 is described as being located above the forging component 4, and the forming module 7 is located below the forging component 4. In actual use, the upper and lower relationships of the two are swapped to meet the design requirements of this equipment. When the forging component 4 is at the lower limit position, that is, the forming module 7 below is in the mold closing state, at this time, the force of the lifting drive 3 driving the forging component 4 to rise is first accumulated in the force-applying component 5. After accumulating to a certain extent, the original downward force of the force-applying component 5 on the forging component 4 will be transformed into an upward force at a certain moment, allowing the forging component 4 to rise rapidly and complete the upward movement. The upper intermediate module 6 closes the mold forging to forge the bar 91 into the shape of the intermediate body 92. The force-applying component 5 isolates the lifting drive 3 and the forging component 4, allowing the lifting drive 3 to have a longer force-applying preparation time, while the forging component 4 releases the energy accumulated in the force-applying component 5 in a very short time, increasing the impact force when the intermediate module 6 and the forming module 7 are closed, and realizing the forging process on a smaller movement stroke of the forging component 4.

[0041] The lifting drive 3 includes a cylinder 31 and a cylinder 32. The forging assembly 4 includes an intermediate rod 41 and a mounting head 42. The force-applying assembly 5 includes a first rod 51, a second rod 52, and a spring 53. The cylinder 31 is vertically mounted on the intermediate platform 2. The end of the output shaft of the cylinder 31 is connected to the cylinder 32. The radial outer surface of the cylinder 32 is slidably mounted on the inner wall of the intermediate platform 2. The intermediate rod 41 is vertically slidably mounted on the intermediate platform 2. The mounting heads 42 are respectively arranged at both ends of the intermediate rod 41. The half molds of the intermediate module 6 and the forming module 7 are respectively mounted on the two mounting heads 42. One end of the first rod 51 The first rod 51 is hinged to the inner wall of the cylinder 32, and the hinge axis of the first rod 51 and the cylinder 32 is along the horizontal direction. One end of the second rod 52 is hinged to the side wall of the intermediate rod 41, and the hinge axis of the second rod 52 and the intermediate rod 41 is along the horizontal direction. The first rod 51 and the second rod 52 are axially slidably inserted at one end close to each other. The first rod 51 and the second rod 52 are respectively provided with a limiting step 54, and the spring 53 is sleeved on the first rod 51 and the second rod 52, and the two ends of the spring 53 are against the limiting step 54. There are two or more groups of force-applying components 5, and the force-applying components 5 are evenly distributed around the intermediate rod 41.

[0042] like Figure 4 , 5As shown, the device uses a swinging spring as a force storage component and a component that changes the direction of the force. When the middle rod 41 is in the upper limit position, the cylinder 31 is in an extended state, the barrel 32 is also in a lower position, the second rod 52 connected to the middle rod 41 is higher than the first rod 51, the middle die set 6 above the forging assembly 4 is in a mold closing state, the output shaft of the cylinder 31 is recovered, the barrel 32 moves up, and the spring 53 is gradually compressed. However, as long as the second rod 52 is higher than the first rod 51, the force on the middle rod 41 is upward until the spring is When the spring 53 reaches the maximum compression amount, that is, the first rod 51 and the second rod 52 are in the horizontal position, the cylinder 32 moves up slightly further, which causes the intermediate rod 41 to be subjected to a downward force. The intermediate rod 41 begins to rapidly drop to the lower limit position, completing the forging action at the forming module 7. After the intermediate body 92 in the intermediate module 6 is taken out and the workpiece is replaced, the oil cylinder 31 extends the output shaft again, the cylinder 32 drops, the first rod 51 and the second rod 52 pass the horizontal position, and are high in the middle and low around again. Then, the intermediate rod 41 rises rapidly, and the cycle continues.

[0043] The cross section of the contact surface between the intermediate rod 41 and the intermediate platform 2 in sliding connection is non-circular, and the cross section of the contact surface between the cylinder 32 and the intermediate platform 2 in sliding connection is non-circular.

[0044] The circular cross-section may cause the intermediate rod 41 or the cylinder 32 to rotate, thereby causing the first rod 51 and the second rod 52 to be misaligned and twisted.

[0045] The spring 53 is a wave spring.

[0046] The wave spring has uniform elastic force in the circumferential direction and more material. Under the same cylindrical size, more material stores and releases elastic potential energy, and a higher elastic coefficient can be selected.

[0047] The middle die set 6 and the forming die set 7 can be detachably mounted on the forging assembly 4 and the machine base 1 .

[0048] The die set can be easily replaced to forge pick bodies of different sizes and shapes.

[0049] like Figure 3 , 6 As shown, the middle mold group 6 includes a first half mold 61 and a second half mold 62. The first half mold 61 is installed on the machine base 1, and the second half mold 62 is installed on the mounting head 42. Electrodes 8 are respectively arranged on the bottom surfaces of the cavities of the first half mold 61 and the second half mold 62, and the two electrodes 8 are connected to an external alternating voltage.

[0050] After the intermediate body 92 is formed in the intermediate module 6, both ends are in contact with the electrodes 8, and an alternating current passes through the intermediate body 92. The skin effect allows a large amount of current to flow only from the surface of the intermediate body 92, heating the surface of the intermediate body 92, softening the lattice, and making the outer metal of the intermediate body 92 easier to be forged and deformed in the next forging process.

[0051] The intermediate die set 6 and the forming die set 7 are heated to the warm forging temperature. The pick body is small in size and does not require hot forging to greatly reduce the difficulty of deformation.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pick body forging and forming device, characterized in that: The forging and forming equipment comprises a machine base (1), an intermediate platform (2), a lifting drive (3), a forging assembly (4), a force-applying assembly (5), an intermediate module (6), and a forming module (7); the machine base (1) extends vertically upward from the side to install the intermediate platform (2); the lifting drive (3) is arranged on the intermediate platform (2); the forging assembly (4) is vertically slidably installed on the intermediate platform (2); the force-applying assembly (5) is arranged between the lifting drive (3) and the forging assembly (4); the intermediate module (6) and the forming module (7) are arranged between the forging assembly (4) and the machine base (1); The forging and forming equipment forges the bar stock (91) into a pick body (93); the shape of the mold cavity of the intermediate die set (6) is an intermediate body (92) between the bar stock (91) and the pick body (93); and the shape of the mold cavity of the forming die set (7) is the shape of the pick body (93); One of the intermediate die set (6) and the forming die set (7) is located above the forging assembly (4), and the other is located below the forging assembly (4); a side surface of the forging assembly (4) is connected to a lifting drive (3); The force-applying component (5) has a structure for instantaneously changing the direction of the force, and the lifting drive (3) is a hydraulic force; The lifting drive (3) comprises a cylinder (31) and a cylinder (32); the forging assembly (4) comprises an intermediate rod (41) and a mounting head (42); the force-applying assembly (5) comprises a first rod (51), a second rod (52), and a spring (53); the cylinder (31) is vertically mounted on the intermediate platform (2); the end of the output shaft of the cylinder (31) is connected to the cylinder (32); the radial outer surface of the cylinder (32) is slidably mounted on the inner wall of the intermediate platform (2); the intermediate rod (41) is vertically slidably mounted on the intermediate platform (2); mounting heads (42) are respectively arranged at both ends of the intermediate rod (41); the half molds of each of the intermediate module (6) and the forming module (7) are respectively mounted on the two mounting heads (42); One end of a rod (51) is hinged to the inner wall of the cylinder (32), the hinge axis of the first rod (51) and the cylinder (32) is in the horizontal direction, one end of the second rod (52) is hinged to the side wall of the intermediate rod (41), the hinge axis of the second rod (52) and the intermediate rod (41) is in the horizontal direction, the first rod (51) and the second rod (52) are axially slidably plugged at one end close to each other, the first rod (51) and the second rod (52) are respectively provided with a limiting step (54), the spring (53) is sleeved on the first rod (51) and the second rod (52), the two ends of the spring (53) are against the limiting step (54), the force applying components (5) are provided with two or more groups, and the force applying components (5) are evenly distributed around the intermediate rod (41) in a circumference.

2. The pick body forging and forming device according to claim 1, characterized in that: The cross section of the contact surface where the intermediate rod (41) is slidably connected to the intermediate platform (2) is non-circular, and the cross section of the contact surface where the cylinder (32) is slidably connected to the intermediate platform (2) is non-circular.

3. The pick body forging and forming equipment according to claim 1, characterized in that: The spring (53) is a wave spring.

4. The pick body forging and forming device according to claim 1, characterized in that: The intermediate die set (6) and the forming die set (7) can both be detachably mounted on the forging assembly (4) and the machine base (1).

5. The pick body forging and forming equipment according to claim 1, characterized in that: The intermediate mold assembly (6) comprises a first half mold (61) and a second half mold (62), the first half mold (61) being mounted on a machine base (1), and the second half mold (62) being mounted on a mounting head (42), electrodes (8) being provided on the bottom surfaces of the cavities of the first half mold (61) and the second half mold (62), respectively, and the two electrodes (8) being connected to an external alternating voltage.

6. The pick body forging and forming device according to claim 5, characterized in that: The intermediate die set (6) and the forming die set (7) are heated to a warm forging temperature.

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