CN224209123U - Powder forming machine with improved feeding structure - Google Patents

Abstract

The utility model relates to the technical field of powder forming equipment, and discloses a powder forming machine with an improved feeding structure, wherein a rack comprises a lower frame and an upper frame; the upper die assembly comprises a first longitudinal moving device, an upper die head and an upper die plate, the lower die assembly comprises a second longitudinal moving device and a lower die base, the core rod device comprises a mounting seat, a core rod assembly and a third longitudinal moving device, the powder feeding device comprises a shell, a first motor, a speed reducer, a swing rod, a support, a box body and a cylinder, an output shaft of the speed reducer extends out of the shell, the end part of the swing rod is sleeved on the output shaft of the speed reducer, the end part of the swing rod can be moved and adjusted relative to the output shaft of the speed reducer, an open notch is formed in the connecting position of the support and the swing rod, and the telescopic end of the cylinder is hung on the support. The utility model has flexible adjustment capability, higher operation precision and more stable movement.

Description

Powder forming machine with improved feeding structure

Technical Field

The utility model relates to the technical field of powder forming equipment, in particular to a powder forming machine with an improved feeding structure.

Background

The purpose of a powder forming machine is to produce loose powder into semi-finished or finished products having a predetermined geometry, size, density and strength. Among them, the most common method of powder molding is powder extrusion molding, which generally refers to a powder molding method of extruding a metal powder in a die through an extrusion die having the same size and shape as the cross section of its product into a compact bar or part by means of the pressure of a punch.

The existing powder forming machine has the working process that a powder feeding mechanism uniformly fills quantitative powder into a cavity on a lower die holder, and high pressure is applied through an upper die head to tightly combine powder particles and remove gaps. And ejecting the formed compact from the die, and keeping the shape intact.

In view of the fact that the powder feeding mechanism and the equipment in the market are fixedly connected, when the powder feeding mechanism is detached or replaced, a series of complicated detachment steps are needed, and the operation is inconvenient.

Improvements in this regard are needed.

Disclosure of utility model

The utility model solves the technical problem of providing a powder forming machine with an improved feeding structure aiming at the defects in the prior art so as to solve the problems in the background art.

In order to solve the technical problems, the utility model adopts the following technical scheme that the powder forming machine with an improved feeding structure comprises a frame, a feeding mechanism and a feeding mechanism, wherein the frame is used for installing and supporting mechanical parts and comprises a lower frame and an upper frame arranged at the upper part of the lower frame, and the upper frame is of an integrated structure formed by ductile iron; the upper die assembly is arranged at the upper part of the upper frame and comprises a first longitudinal moving device, an upper die head arranged at the moving end of the first longitudinal moving device and an upper die plate sleeved on the upper die head; the lower die assembly comprises a second longitudinal moving device and a lower die holder arranged on the moving end of the second longitudinal moving device, the second longitudinal moving device is arranged on the lower frame and is provided with a cavity for filling powder, a first guide assembly is longitudinally arranged on the upper frame and penetrates through the upper die plate and the lower die holder, the core rod device comprises a mounting seat arranged on the upper frame, a core rod assembly arranged on the mounting seat and a third longitudinal moving device connected with the core rod assembly, the mounting seat is arranged below the lower die holder, at least one part of the core rod assembly is arranged in the cavity, the powder feeding device is arranged on one side of the lower die holder and comprises a shell, a powder feeding motor arranged in the shell, a speed reducer connected with an output shaft of the powder feeding motor, a support connected with the speed reducer and a swinging rod hung on the swinging rod, the speed reducer comprises a support, a box body arranged on the support and a cylinder arranged outside the shell, wherein an output shaft of the speed reducer extends out of the shell, the end part of a swing rod is sleeved on the output shaft of the speed reducer, the end part of the swing rod can be movably adjusted relative to the output shaft of the speed reducer, an open notch is formed in the connection position of the support and the swing rod, the telescopic end of the cylinder is hung on the support, and the control system is used for receiving signals and outputting the signals.

The first longitudinal moving device comprises a first hydraulic cylinder, a first inner shell sleeved outside the first hydraulic cylinder, a first guide rail arranged on the outer wall of the first inner shell, a first sliding block arranged on the upper portion of the upper frame and a first outer shell arranged on the outer portion of the first inner shell in a covering mode, wherein the first outer shell is connected with the first hydraulic cylinder and the upper frame, the first sliding block is matched with the first guide rail, and when the first hydraulic cylinder drives the upper die head to move downwards, the first inner shell is matched and guided with the first sliding block through the first guide rail.

Further, the first guide assembly comprises four positioning guide posts distributed in an array, and the upper die plate and the lower die holder are connected with the positioning guide posts through guide sleeves.

The second longitudinal moving device comprises a second motor, a second lead screw connected with the output end of the second motor, a second inner shell sleeved on the threaded section of the second lead screw, a second guide rail arranged on the outer circumferential surface of the second inner shell, a second sliding block mounted on the lower portion of the upper frame and a second outer shell covered outside the second inner shell, wherein the second outer shell is connected with the lower portion of the upper frame and the optical axis position of the second lead screw, at least one part of the second inner shell extends to be connected with the lower die holder, the second sliding block is matched with the second guide rail, and when the second motor drives the lower die holder to move, the second inner shell is matched and guided with the second sliding block through the second guide rail.

Further, the third longitudinal moving device comprises a third motor, a third screw rod arranged on the third motor, a third optical axis arranged in parallel with the third screw rod and a third sleeve sleeved on the third screw rod and the third optical axis, and the third motor drives the third sleeve to longitudinally move.

Further, the core rod assembly comprises a spring fixed at the upper end of the third sleeve, an inner core rod arranged on the third sleeve and abutted against the spring, and an outer core rod arranged on the mounting seat, wherein the outer core rod is of a hollow structure, and the inner core rod is arranged in the outer core rod.

Further, the device comprises a second guide assembly, wherein the second guide assembly comprises a third guide rail and a third sliding block matched with the third guide rail, the third guide rail is longitudinally arranged on the upper frame, and the third sliding block is connected with the upper template.

Compared with the prior art, the utility model has the beneficial effects that:

The quick disassembly and assembly comprises a bracket open type notch and a cylinder hanging design, realizes quick disassembly and replacement of the powder feeding device, solves the problem of complicated operation of the traditional fixed connection mode, remarkably improves the maintenance efficiency, and flexibly adjusts and adapts to assembly errors caused in the production of mechanical parts by the adjustable connection of the swing rod and the output shaft of the speed reducer, thereby meeting the production requirements.

The three sets of longitudinal driving systems, namely an upper die (hydraulic driving), a lower die (servo screw) and a core rod (motor and spring buffer), are respectively and independently controlled, so that the required hollow numerical control blade can be produced, and meanwhile, the upper die assembly, the guide rail and the sliding block which are arranged on the lower die assembly can improve the accuracy of longitudinal movement, and meanwhile, the stability of the movement process is improved.

The core rod spring is in buffer design, the inner core rod is elastically connected with the third sleeve through a spring, hard contact with an upper die head is avoided in the pressing process, and equipment safety is improved.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic view of another angular structure of the present utility model.

Fig. 3 is a schematic view of a part of the structure of the present utility model.

Fig. 4 is a schematic view of a partially cut-away structure of the present utility model.

Fig. 5 is a schematic view of the internal structure of the present utility model.

Fig. 6 is a schematic view of the internal structure of the present utility model.

Fig. 7 is a schematic structural view of the powder feeding device.

Fig. 8 is a partial schematic view of the connection of the swing link to the speed reducer shaft.

Fig. 9 is a schematic view of the internal structure of the powder feeding device.

Fig. 10 is a schematic view of a part of the structure of the powder feeding device.

Fig. 11 is a schematic view of a partially cut-away structure of the present utility model.

Fig. 12 is a schematic structural view of the upper die assembly.

Fig. 13 is a schematic structural view of the upper die assembly.

Fig. 14 is a schematic cross-sectional structural view of the upper die assembly.

Fig. 15 is a schematic view of the structure of the lower die assembly.

Fig. 16 is a schematic cross-sectional structure of the lower die assembly.

Fig. 17 is a schematic view of the structure of the lower die assembly.

Fig. 18 is an enlarged partial schematic view of fig. 17.

FIG. 19 is a schematic view of the structure of the mandrel assembly and the third longitudinal movement assembly.

Fig. 20 is a schematic cross-sectional structure of fig. 19.

FIG. 21 is a schematic cross-sectional view of a core rod apparatus.

Fig. 22 is an enlarged partial schematic view of fig. 21.

Fig. 23 is an enlarged partial schematic view of fig. 21.

The numerical control device comprises a frame 1, a frame 2, a lower frame 3, an upper frame 4, an upper die assembly 5, a first longitudinal moving device 6, an upper die head 7, an upper die plate 8, a lower die assembly 9, a second longitudinal moving device 10, a lower die holder 11, a cavity 12, a first guide assembly 13, a core rod device 14, a mounting seat 15, a core rod assembly 16, a third longitudinal moving device 17, a powder feeding device 18, a shell 19, a powder feeding motor 20, a speed reducer 21, a swing rod 22, a bracket 23, a box body 24, a cylinder 25, an open notch 26, a control system 27, a first hydraulic cylinder 28, a first inner shell 29, a first guide rail 30, a first slide block 31, a first outer shell 32, a second motor 33, a second lead screw 34, a second inner shell 35, a second guide rail 36, a second slide block 37, a second outer shell 38, a third motor 39, a third optical axis 40, a third optical axis 41, a third sleeve 42, a third guide rail 47, a third lead screw assembly 45, a third guide rail 47 and a core rod assembly 47.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be illustrative of the application and are not to be construed as limiting the application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a number", "a plurality" or "a plurality" is two or more, unless specifically defined otherwise. In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

In view of the technical problems described in the background art, as shown in fig. 1-23, a powder forming machine with improved feeding structure is provided, which comprises a frame 1, a feeding device and a feeding device, wherein the frame 1 is used for installing and supporting mechanical parts, the frame 1 comprises a lower frame 2 and an upper frame 3 arranged at the upper part of the lower frame 2, and the upper frame 3 is an integral structure formed by ductile iron; an upper die assembly 4, the upper die assembly 4 being arranged on the upper part of the upper frame 3, the upper die assembly 4 comprising a first longitudinal moving device 5, an upper die head 6 arranged at the moving end of the first longitudinal moving device 5 and an upper die plate 7 sleeved on the upper die head 6, a lower die assembly 8, the lower die assembly 8 comprising a second longitudinal moving device 9 and a lower die holder 10 arranged at the moving end of the second longitudinal moving device 9, the second longitudinal moving device 9 being arranged on the lower frame 2 and the second longitudinal moving device 9, the lower die holder 10 being provided with a cavity 11 for filling powder, a first guiding assembly 12 being arranged on the upper frame 3 longitudinally, the first guiding assembly 12 penetrating the upper die plate 7 and the lower die holder 10, a mandrel assembly 13 comprising a mounting seat 14 mounted on the upper frame 3, a mandrel assembly 15 arranged on the mounting seat 14 and a third longitudinal moving device 16 connected to the mandrel assembly 15, the lower die holder 10 being provided with a cavity 11 for filling powder, a mandrel assembly 17 being arranged in the lower die holder 10 at least on one side of the powder feeding housing 17, the mandrel assembly 13 being arranged in the lower die holder 17, the powder feeding device comprises a speed reducer 20 connected with an output shaft of a powder feeding motor, a swing rod 21 connected with the speed reducer 20, a support 22 hung on the swing rod 21, a box body 23 arranged on the support 22 and a cylinder 24 arranged outside a shell 18, wherein the output shaft of the speed reducer 20 extends out of the shell 18, the end part of the swing rod 21 is sleeved on the output shaft of the speed reducer 20, the end part of the swing rod 21 can be moved and adjusted relative to the output shaft of the speed reducer 20, an open notch 25 is arranged at the connection position of the support 22 and the swing rod 21, the telescopic end of the cylinder 24 is hung on the support 22, and a control system 26 is used for receiving signals and outputting the signals.

In the above technical scheme, the frame 1 includes the lower frame 2 and the upper frame 3, because the upper frame 3 is the main atress frame, the upper frame 3 adopts the integrative casting of high strength ductile iron, ensures whole rigidity.

The upper die assembly 4 is used for applying pressing force, and the upper die assembly 4 comprises a first longitudinal moving device 5, an upper die head 6 and an upper die plate 7, wherein the first longitudinal moving device 5 is arranged on the upper end surface of the upper frame 3 and penetrates through the inside of the upper frame 3.

The lower die assembly 8 is used for carrying powder and completing ejection action. The lower die assembly 8 mainly comprises a second longitudinal moving device 9 and a lower die holder 10, wherein a cavity 11 is arranged on the lower die holder 10, the cavity 11 is designed according to the shape of a part to be produced, for example, a numerical control blade is produced, and the corresponding cavity 11 is designed, so that the lower die assembly is not limited.

First guide assembly 12 the first guide assembly 12 is used to ensure centring during pressing. The first guiding component 12 is longitudinally connected with the upper end face and the lower end face of the upper frame 3, and the first guiding component 12 penetrates through the upper die plate 7 and the lower die holder 10 respectively and plays a role in guiding the upper die plate 7 and the lower die holder 10 in the moving process.

The core rod device 13 is used for shaping a blank of a hollow structure, and in use, at least a portion of the core rod device 13 is placed in the cavity 11, forming a hollow structure during pressing.

The powder feeding device 17 is used for quantitatively feeding powder into the cavity 11. In order to achieve easy disassembly of the powder feeding device 17. The powder feeding device 17 comprises a shell 18, a powder feeding motor 19, a speed reducer 20, a swinging rod 21, a bracket 22, a box body 23 and an air cylinder 24.

The casing 18 is provided with a drive switch, for example, a switch of the powder feeding motor 19, a switch of the cylinder 24, and the like. The powder feeding motor 19 is arranged inside the shell 18, the output end of the powder feeding motor 19 is connected with the speed reducer 20, and the output end of the other end of the speed reducer 20 extends to the outside of the shell 18 and is connected with the swing rod 21. The speed reducer 20 and the swing rod 21 are connected and adjusted through a key groove, when the powder box is assembled, the end part of the swing rod 21 is sleeved on the output end of the speed reducer 20, after the proper position is adjusted, the swing rod 21 and the speed reducer 20 are fixed through a mounting key, the swing rod 21 is locked and fixed on the output end of the speed reducer 20 through a screw, and errors formed by parts in processing and assembling can be solved by the aid of the adjusting mode, so that the powder box is conveniently and accurately conveyed to the position of the cavity 11. Simultaneously, open notch 25 is through the design on the support 22, and open notch 25 is the U type notch that sets up downwards, and support 22 direct overlap joint is on pendulum rod 21, and the flexible end of cylinder 24 articulates at support 22, simultaneously, cylinder 24 when the powder box pay-off, and cylinder 24 is continuously pushed down, and the powder box can effectively laminate on the terminal surface of die holder 10.

The control system 26 may be a PLC, a single chip microcomputer, an upper computer, or the like with control programming, through which the process is controlled.

The specific disassembly process comprises the steps of closing the powder feeding motor 19 on the shell 18 by a worker, closing the air source of the air cylinder 24, taking out the open notch 25 of the bracket 22 from the position of the swing rod 21, and removing the hook part of the output end of the air cylinder 24 from the bracket 22, so that the whole bracket 22 carries the powder box to be disassembled, and the replacement operation is convenient.

Specifically, in this embodiment, when the powder forming machine works, the second longitudinal moving device 9 drives the lower die holder 10 to move upwards, so that the cavity 11 of the lower die holder 10 can have a certain height difference relative to the core rod device 13, the powder feeding motor 19 of the powder feeding device 17 is driven, the powder feeding motor is driven by the speed reducer 20 to drive the swing rod 21, the swing rod 21 drives the bracket 22 to move towards the cavity 11 of the lower die holder 10, the powder box releases powder into the cavity 11, and meanwhile, the cylinder 24 presses the acting force, and the powder box can be attached to the end face of the cavity 11. Then, the upper die assembly 4 presses the powder stacked in the forming cavity 11 under the action of the first longitudinal moving die set to form the powder, and simultaneously the third longitudinal moving die set and the first longitudinal moving die set move cooperatively, so that the end face of the mandrel assembly 15 and the upper die 6 do not generate hard contact, and the hollow workpiece product is formed by pressing. The first longitudinal moving module and the second longitudinal moving module drive the upper die head 6 to move upwards and the lower die holder 10 to move downwards, so that the formed product is stripped, and the processing operation is completed.

As shown in the drawing, the first longitudinal moving device 5 includes a first hydraulic cylinder 27, a first inner shell 28 sleeved outside the first hydraulic cylinder 27, a first guide rail 29 disposed on an outer wall of the first inner shell 28, a first sliding block 30 disposed on an upper portion of the upper frame 3, and a first outer shell 31 disposed on an outer portion of the first inner shell 28, wherein the first outer shell 31 is connected with the first hydraulic cylinder 27 and the upper frame 3, the first sliding block 30 is matched with the first guide rail 29, and the first inner shell 28 is matched and guided with the first sliding block 30 via the first guide rail 29 when the first hydraulic cylinder 27 drives the upper die head 6 to move downwards.

Since the accuracy of the movement of the upper die 6 affects the product molding quality in practical use, the conventional guide structure adopts an optical axis guide manner, and the accuracy of the movement of the upper die 6 cannot be higher.

In this regard, in the present embodiment, the structure of the first longitudinal moving device 5 of the upper die assembly 4 is optimized. Specifically, the first longitudinal movement device 5 includes a first hydraulic cylinder 27, a first inner housing 28, a first guide rail 29, a first slider 30, and a first outer housing 31. The first hydraulic cylinder 27 is arranged on the upper end face of the upper frame 3, the output end of the first hydraulic cylinder 27 penetrates through the upper frame 3 to extend downwards, the upper die plate 7 and the upper die head 6 are arranged on the telescopic ends of the first hydraulic cylinder 27, the first inner shell 28 is sleeved and installed on the first hydraulic cylinder 27, a first guide rail 29 is arranged on the outer peripheral face of the first inner shell 28, a first sliding block 30 is arranged at the position of the first inner shell 28 of the upper frame 3, the first sliding block 30 is matched with the first guide rail 29, preferably, the number of the first sliding blocks 30 and the first guide rail 29 can be selected according to actual use conditions, in particular, the first guide rail 29 is arranged on all four peripheral faces of the first inner shell 28, and the corresponding first sliding block 30 is arranged at the position of the upper frame 3 corresponding to the first guide rail 29. The first outer casing 31 is covered on the first inner casing 28, and at the same time, the first outer casing 31 is connected to the first hydraulic cylinder 27 and the upper frame 3, so that foreign matter can be prevented from entering.

When the first hydraulic cylinder 27 drives the telescopic end thereof to move, the first guide rail 29 outside the first inner housing 28 moves along the first slider 30, thereby improving the accuracy of the movement, and the upper die head 6 can be accurately pressed with the cavity 11 of the lower die holder 10.

As shown in fig. 11-14, the first guiding assembly 12 includes four positioning guide posts distributed in an array, and the upper die plate 7 and the lower die holder 10 are connected with the positioning guide posts through guide sleeves.

Four positioning guide posts are distributed in a rectangular shape, the upper die plate 7 and the lower die base 10 are in sliding fit through guide sleeves, centering accuracy of the upper die assembly and the lower die assembly 8 is guaranteed, and mechanical part deformation caused by unbalanced load is avoided, so that a pressed product is unqualified and has defects.

As shown in fig. 14-18, the second longitudinal moving device 9 includes a second motor 32, a second lead screw 33 connected to an output end of the second motor 32, a second inner shell 34 sleeved on a threaded section of the second lead screw 33, a second guide rail 35 arranged on an outer circumferential surface of the second inner shell 34, a second slider 36 mounted on a lower portion of the upper frame 3, and a second outer shell 37 covering an outer portion of the second inner shell 34, wherein the second outer shell 37 is connected to a lower portion of the upper frame 3 and an optical axis position of the second lead screw 33, at least a portion of the second inner shell 34 extends to be connected to the lower die holder 10, the second slider 36 cooperates with the second guide rail 35, and when the second motor 32 drives the lower die holder 10 to move, the second inner shell 34 cooperates with the second slider 36 via the second guide rail 35.

Since in practical use, the accuracy of the lower die assembly 8 affects the product molding quality, the conventional guide structure adopts an optical axis guide manner, and the accuracy of the movement of the lower die assembly 8 cannot reach higher accuracy.

Specifically, the second longitudinal moving device 9 includes a second motor 32, a second lead screw 33, a second inner shell 34, a second guide rail 35, a second slide rail and a second outer shell 37, the output end of the second motor 32 may be connected with the second lead screw 33 through a coupling, the second lead screw 33 includes an optical axis position and a thread section position, the second outer shell 37 is sleeved at the optical axis position and is connected with the bottom of the upper frame 3, the second inner shell 34 is sleeved on the second lead screw 33, and the second inner shell 34 is disposed inside the second outer shell 37, the upper portion of the second inner shell 34 is connected with the lower die holder 10, the second guide rail 35 and the second slide block 36 are disposed between the second inner shell 34 and the second outer shell 37, wherein the number of the second guide rail 35 and the second slide block 36 may be selected according to actual use conditions, specifically, in this embodiment, the second guide rail 35 is disposed on two opposite sides of the second inner shell 34, the lower portion of the upper frame 3 corresponds to the second guide rail 35 position. The second outer housing 37 is covered on the second inner housing 34, and the frame 3 on the second outer housing 37 is connected to the optical axis position of the second screw 33, so that foreign matter can be prevented from entering.

When the second motor 32 drives the second screw 33 to move, the second guide rail 35 outside the second inner housing 34 moves along the second slider 36, thereby improving the accuracy of the movement, and the accuracy of the movement of the lower die holder 10 can be improved.

As shown in fig. 19-21, the third longitudinal moving device 16 includes a third motor 38, a third screw rod 39 disposed on the third motor 38, a third optical axis 40 disposed parallel to the third screw rod 39, and a third sleeve 41 sleeved on the third screw rod 39 and the third optical axis 40, wherein the third motor 38 drives the third sleeve 41 to move longitudinally.

In practice, to avoid the core rod assembly 15 being in hard contact with the upper die head 6. The mandrel device 13 comprises a third longitudinal displacement device 16, in particular the third longitudinal displacement device 16 comprises a third motor 38, a third lead screw 39, a third optical axis 40 and a third sleeve 41, the upper end of the third sleeve 41 being intended for mounting the partial mandrel assembly 15. The driving process is that when the upper die head 6 is pressed down to contact with the core rod in the cavity 11, in order to avoid continuous hard contact, the core rod assembly 15 is synchronously moved down in the process that the upper die head 6 is continuously moved down. Specifically, the third motor 38 drives the third screw 39 to rotate, and the third sleeve 41 moves longitudinally under the limitation of the third optical axis 40 and the third screw 39.

As shown in fig. 21-23, the mandrel assembly 15 includes a spring 42 fixed at an upper end of the third sleeve 41, an inner core rod 43 disposed on the third sleeve 41 and abutting against the spring 42, and an outer core rod 44 disposed on the mounting seat 14, wherein the outer core rod 44 has a hollow structure, and the inner core rod 43 is disposed in the outer core rod 44.

Preferably, the elastic buffering design of the mandrel device 13 is that the mandrel assembly 15 comprises a spring 42, an inner mandrel 43 and an outer mandrel 44, the front end of the third sleeve 41 is provided with an installation space, the spring 42 is arranged in the installation space, the inner mandrel 43 extends to the position of the cavity 11 of the lower die holder 10, meanwhile, the outer mandrel 44 is installed on the installation seat 14, the outer mandrel 44 is sleeved on the inner mandrel 43, the outer mandrel 44 is in a fixed mode, and the height difference between the outer mandrel 44 and the lower die holder 10 forms the cavity 11. In use, when the upper die head 6 moves down excessively, the spring 42 compresses due to the existence of the spring 42, and the inner core rod 43 can elastically buffer, so as to avoid hard contact with the upper die head 6 and protect the die.

Referring to fig. 5 to 6, the present utility model includes a second guide assembly 45, the second guide assembly 45 includes a third rail 46 and a third slider 47 engaged with the third rail 46, the third rail 46 is longitudinally installed on the upper frame 3, and the third slider 47 is connected with the upper mold plate 7.

Further, in order to improve the moving accuracy of the upper die plate 7, a second guide assembly 45 is provided on the upper die frame, the second guide assembly 45 includes a third guide rail 46 and a third slider 47, and when the upper die plate 7 is driven to move, the third slider 47 moves in a direction in which the third guide rail 46 is provided, thereby improving the moving accuracy of the upper die plate 7.

The above description should not be taken as limiting the scope of the utility model, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims (7)

1. A powder forming machine with improved feed structure, comprising:

The rack is used for installing and supporting mechanical parts and comprises a lower frame and an upper frame arranged on the upper part of the lower frame, and the upper frame is of an integrated structure formed by ductile iron;

The upper die assembly is arranged at the upper part of the upper frame and comprises a first longitudinal moving device, an upper die head arranged at the moving end of the first longitudinal moving device and an upper die plate sleeved on the upper die head;

The lower die assembly comprises a second longitudinal moving device and a lower die holder arranged on the moving end of the second longitudinal moving device, the second longitudinal moving device is arranged on the lower frame and the second longitudinal moving device, and a cavity for filling powder is arranged on the lower die holder;

The first guide component is longitudinally arranged on the upper frame and penetrates through the upper die plate and the lower die holder;

the mandrel device comprises a mounting seat, a mandrel component and a third longitudinal moving device, wherein the mounting seat is arranged on the upper frame, the mandrel component is arranged on the mounting seat, and the third longitudinal moving device is connected with the mandrel component;

The powder feeding device is arranged on one side of the lower die holder and comprises a shell, a powder feeding motor arranged in the shell, a speed reducer connected with an output shaft of the powder feeding motor, a swing rod connected with the speed reducer, a bracket hung on the swing rod, a box body arranged on the bracket and a cylinder arranged outside the shell, wherein the output shaft of the speed reducer extends out of the shell, the end part of the swing rod is sleeved on the output shaft of the speed reducer, the end part of the swing rod can be movably adjusted relative to the output shaft of the speed reducer, an open notch is arranged at the connection position of the bracket and the swing rod, and the telescopic end of the cylinder is hung on the bracket;

And the control system is used for receiving the signals and outputting the signals.

2. The powder forming machine with improved feeding structure according to claim 1, wherein:

the first longitudinal moving device comprises a first hydraulic cylinder, a first inner shell sleeved outside the first hydraulic cylinder, a first guide rail arranged on the outer wall of the first inner shell, a first sliding block arranged on the upper part of the upper frame and a first outer shell arranged outside the first inner shell in a covering manner;

The first outer shell is connected with the first hydraulic cylinder and the upper frame, the first sliding block is matched with the first guide rail, and when the first hydraulic cylinder drives the upper die head to move downwards, the first inner shell is matched and guided with the first sliding block through the first guide rail.

3. The powder forming machine with improved feeding structure according to claim 2, wherein:

the first guide assembly comprises four positioning guide posts distributed in an array, and the upper die plate and the lower die holder are connected with the positioning guide posts through guide sleeves.

4. The powder forming machine with improved feeding structure according to claim 1, wherein:

The second longitudinal moving device comprises a second motor, a second lead screw connected with the output end of the second motor, a second inner shell sleeved on the threaded section of the second lead screw, a second guide rail arranged on the outer peripheral surface of the second inner shell, a second sliding block arranged at the lower part of the upper frame and a second outer shell covered outside the second inner shell;

The second outer shell is connected with the lower part of the upper frame and the optical axis position of the second screw rod, at least one part of the second inner shell extends to be connected with the lower die holder, the second sliding block is matched with the second guide rail, and when the second motor drives the lower die holder to move, the second inner shell is matched and guided with the second sliding block through the second guide rail.

5. The powder forming machine with improved feeding structure according to claim 1, wherein:

The third longitudinal moving device comprises a third motor, a third screw rod arranged on the third motor, a third optical axis arranged in parallel with the third screw rod and a third sleeve sleeved on the third screw rod and the third optical axis, and the third motor drives the third sleeve to longitudinally move.

6. The powder forming machine with improved feeding structure according to claim 5, wherein:

The core rod assembly comprises a spring fixed at the upper end of the third sleeve, an inner core rod arranged on the third sleeve and abutted with the spring, and an outer core rod arranged on the mounting seat;

the outer core rod is of a hollow structure, and the inner core rod is arranged in the outer core rod.

7. The powder forming machine with improved feeding structure according to claim 1, wherein:

The guide device comprises a second guide assembly, wherein the second guide assembly comprises a third guide rail and a third sliding block matched with the third guide rail, the third guide rail is longitudinally arranged on the upper frame, and the third sliding block is connected with the upper template.