WO2018024142A1

WO2018024142A1 - Hydraulic machine of cylindrical structure

Info

Publication number: WO2018024142A1
Application number: PCT/CN2017/094618
Authority: WO
Inventors: 杨棋君
Original assignee: 江阴市瑞丰液压机械有限公司
Priority date: 2016-07-31
Filing date: 2017-07-27
Publication date: 2018-02-08
Also published as: CN106003784A; CN106003784B

Abstract

A hydraulic machine of a cylindrical structure. A pipe member (1) is used as a connecting machine frame. A main oil cylinder (2, 3) is disposed at one end of the pipe member. A puncher pin (22, 32) or an extrusion head is disposed at the front end of a piston rod (21, 31) of the main oil cylinder. A shaping mold (8) is disposed at the other end of the pipe member or in the middle of the pipe member. A feeding cavity (7) is disposed at the front portion of the shaping mold and is located between the main oil cylinder and the shaping mold. The center axis of the main oil cylinder and the center axis of the mold are located on the same horizontal or vertical straight line. In the hydraulic machine, the pipe member is used to replace a multi-guide-column structure in the prior art, the oil cylinder or the mold is directly fixed to the end or the middle of the pipe member, a mode of connecting threads, clamping keys or flanges is used to replace an upper and lower beam structure in the prior art, so as to form the hydraulic machine of the cylindrical structure, accordingly a large number of components are omitted, particularly a large-diameter guide column with the high machining cost and oil cylinder chained beams at the two ends are omitted, the whole device size of the hydraulic machine is remarkably decreased, the structure is more compact, conveyance, mounting and maintenance are more convenient, and remarkable economic benefits are provided.

Description

Tubular structure hydraulic press

Technical field

[0001] The present invention relates to the field of hydraulic mechanical equipment, and more particularly to a hydraulic machine having a cylindrical structure.

Background technique

[0002] Hydraulic presses are common pressure equipment, such as chip cake machines, bar extruders, profile extruders, hydraulic presses, etc. The basic structure is a beam connecting the ends of the frame, and a cylinder or a mold is arranged on the beam. The hydraulic press can be vertical or horizontal. Taking the chip cake machine as an example, the chip cake machine is used to press various density of loose black or non-ferrous metal cutting coils, scraps and the like into compact dense cakes under the action of hydraulic punches, thereby facilitating transportation and storage. Finally, these chips can be put into a metal melting furnace, and the metal materials can be recycled after smelting. The existing chip cake machine has a U-shaped structure (or C-shaped structure) or a double-column door frame structure, and also has a three-column or four-column structure. The U-shaped horizontal chip cake machine is a cornice structure, and the two sides are prone to expansion and tension after being pressed, which causes the center axis of the extrusion to bulge, and thus cannot be used for large-scale extrusion equipment. Chinese patent "201420040167.6----feeding forming mechanism for horizontal hydraulic chip cake machine" The horizontal hydraulic chip cake machine of Gonggong includes four guide columns, which are divided into upper and lower rows, and both ends of all guide columns are It is located in the machine base. The structure of the machine is pressed in the cake. All the pressure is carried by the four guide columns. Therefore, the guide column needs to have high strength, so the diameter is relatively thick, and the guide column itself needs to be precision machined. Guaranteed guiding performance and high processing costs.

[0003] Taking a bar extruder as an example, a bar extrusion machine is used for extruding a metal block out of a bar, a wire or a pipe, and the Chinese patent "201510123812.X----the type is extruded with a solid bar. Method and cold extrusion device "The upper beam of the public copper rod extrusion machine is provided with a main cylinder, an extrusion die is arranged on the middle work surface, a top oil cylinder is arranged on the lower beam; and a plurality of branches are used between the upper beam and the lower beam The columns are connected, and the additional columns are required to meet the requirements of guiding progress and high-pressure strength, so the diameter needs to be thicker and the machining precision is higher.

[0004] Similarly, the profile extruder and the hydraulic press have one end as the main cylinder, and the other end is a mold of a profile cross-section or a stamping die, wherein the frame is often a multi-column structure.

[0005] Since the main cylinder itself has a large pressure and a relatively large diameter, a thick multi-lead column is arranged on the outer circumference of the cylinder, and the two ends of the link beam must be disposed, so the existing chip cake machine, the extruder, the extruder, Complete set of hydraulic presses It is bulky, heavy, and costly.

technical problem

[0006] The present applicant provides a hydraulic machine with a reasonable tubular structure for the disadvantages of the above-mentioned existing hydraulic equipment, such as large volume and high cost, thereby greatly reducing the manufacturing cost, the device is more compact, and the equipment is reasonably stressed. , reliability and service life are improved.

Problem solution

Technical solution

[0007] The technical solution adopted by the present invention is as follows:

[0008] A hydraulic machine with a cylindrical structure, with a pipe member as a connecting frame, a main oil cylinder is disposed at one end of the pipe member, and a punch or an extrusion head is disposed at a front end of the piston rod of the main oil cylinder, and the molding die is disposed at the other end of the pipe member or at a middle position of the pipe member. The feed chamber is disposed at the front of the molding die, between the main cylinder and the forming mold, and the central axes of the main cylinder and the mold are located at the same horizontal or vertical straight line.

[0009] As a further improvement of the above technical solution:

[0010] The molding die is disposed at a middle portion of the pipe member, and the other end of the pipe member is provided with a second oil cylinder, and the second cylinder is a sub-cylinder having a power equivalent to that of the main cylinder or an auxiliary cylinder having a power much smaller than that of the main cylinder.

[0011] The pipe member is a circular pipe or a square pipe, and may be formed by casting or extrusion or rolling, or may be a combination of steel plate bending or splicing welding.

[0012] The outer cylinder of the main cylinder or the second cylinder at one end of the piston rod is machined with an external thread and a finishing surface, and the inner circumference of the two ends of the tube or the inner circumference of the adapter is machined with internal threads, and the internal and external threads are engaged. Install the cylinder and use the cap to tighten.

[0013] The main cylinder or the second cylinder is located at one end of the piston rod through flanges and fasteners at both ends of the connecting member.

[0014] The middle portion of the pipe member is located at the feeding chamber position and is provided with a feeding hole, and a feeding mechanism is arranged at the feeding hole position, the u-shaped feeding cavity is located at the front part of the pressing cake mold, and the mouth is facing the hopper side.

[0015] Located below the discharge space, a discharge hole is provided.

[0016] For the chip cake machine, a left oil cylinder and a right oil cylinder are respectively disposed at two ends of the pipe member, a punch is arranged at a front end of the piston rod of the oil cylinder, a mold is disposed in a middle portion of the pipe member, and a feeding cavity is disposed between the left oil cylinder and the mold.

[0017] For a bar extruder or a hydraulic press, a main cylinder and an auxiliary cylinder are disposed at both ends of the pipe member, and the main cylinder piston rod The front end is provided with an extrusion head or a punch, and a feeding cavity and a mold are arranged in the middle of the pipe member, and the main cylinder uses a mold to press-form the material in the feeding cavity, and after the molding, the ejection cylinder is used for demoulding.

[0018] For the profile extruder, the main cylinder and the extrusion die are disposed at both ends of the pipe member, and the extrusion head is disposed at the front end of the piston rod of the main cylinder, the extrusion die has a profile cross-sectional shape, and the front portion of the extrusion die is provided with a communication feed. The feeding mechanism of the cavity, the main cylinder squeezes the material in the feeding cavity into the extrusion die to form a profile.

Advantageous effects of the invention

Beneficial effect

[0019] The beneficial effects of the present invention are as follows:

[0020] The present invention replaces the multi-lead column structure in the prior art by using a pipe member, and directly fixes the oil cylinder or the mold at the end or the middle portion of the pipe member, and the connection method by using a thread, a card key or a flange also replaces the prior art. The upper and lower beam structure forms a hydraulic machine with a cylindrical structure, thus saving a large number of components, especially the large-diameter guide column with high processing cost and the link beam at both ends of the cylinder. The complete equipment of the hydraulic machine is significantly reduced in size and compact in structure. Transportation, installation and maintenance are more convenient and have significant economic benefits. As long as the production work surface of the process is smaller than the inner diameter of the tubular-type main cylinder link cylinder, the various hydraulic devices exemplified above can be adapted to the simple and practical structure of the present invention.

[0021] The invention adopts the pipe structure, the pipe fitting or the adapter sleeve and the like to be easily processed, and the high processing precision can be ensured by using conventional equipment such as a lathe, and the concentricity of the device can be better ensured. The overall structure of the pipe is balanced by force, good rigidity, good equipment reliability and long service life, which improves the quality of the processed product.

Brief description of the drawing

DRAWINGS

1 is a perspective view of a chip cake machine of the present invention.

2 is a perspective view of a pipe fitting of the present invention;

3 is a bottom view of FIG. 1.

4 is a cross-sectional view of the A-A section of FIG. 3.

5 is a cross-sectional view taken along line B-B of FIG. 3.

[0027] In the figure: 1, pipe fittings; 2, left cylinder; 3, right cylinder; 4, cap; 5, pusher cylinder; 6, hopper; 7, feed cavity; 8, mold; Head; 11, internal thread; 12, feed hole; 13, foot; 14 , discharge hole; 21, left cylinder piston rod; 22, left punch; 31, right cylinder piston rod; 32, right punch to implement the preferred embodiment of the invention

BEST MODE FOR CARRYING OUT THE INVENTION

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0028] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0029] Embodiment 1, chip cake machine:

[0030] As shown in FIG. 1, the chip breaking machine of the hydraulic machine having the cylindrical structure according to the present invention comprises a pipe member 1 and a left cylinder 2 and a right cylinder 3 disposed at both ends of the pipe member 1. The pipe member 1 can be used as shown in FIG. The circular tube shown may also be a square tube. The round tube or the square tube may be formed by casting or extrusion, rolling, or the like, or may be formed by bending or splicing a steel plate, and the bottom of the tube 1 is provided with a foot 13 . As shown in FIG. 2, in the embodiment, the internal thread 11 is machined on the inner circumference of both ends of the circular pipe member 1, and the outer cylinder and the finished surface are processed on the outer circumference of the cylinder on the left end of the left cylinder 2 and the right cylinder 3 at the same time. After the internal and external threads are engaged, the cylinder can be screwed into the end of the pipe member 1. Because there is a gap in the threaded fitting, the mating surface is formed on the inner circumference of the pipe member 1, or the insert member is added to cooperate with the finishing surface of the outer circumference of the cylinder to realize the diameter. Positioning, and then axially limiting the left and right cylinders 2 and 3 by the cap 4 tightening. After the installation is completed, the left cylinder 2 and the right cylinder 3 are located at the same central axis, the left cylinder 22 of the left cylinder 2 is provided with a left punch 22, and the right cylinder 3 of the right cylinder 3 is provided with a right punch 32, which is left. Between the head 22 and the right punch 32, a press cake mold 8 is fixed to the inner circumference of the pipe member 1. Press cake mold 8 is put around both ends of the annular structures Jian, the outer diameter of the die gap and the inner diameter of about 8 with a punch, the die coincides with the center axis ₈ about the central axis of the punch, between the mold 8 and the left cylinder 2, A feed chamber 7 is provided. A discharge space is disposed between the mold 8 and the right cylinder 3, and a discharge hole 14 is disposed on the pipe wall of the pipe member 1 located below the discharge space.

[0031] Of course, the oil cylinder can be fixed to the two parts of the pipe member 1 by other forms, for example, a flange, a key or a fixed threaded hole is arranged on the oil cylinder, and a flange, a key groove or a pipe member 1 is directly disposed on the pipe member 1. A threaded hole is provided in the wall thickness, and the flange is connected by a fastener such as a bolt. Or set a dedicated adapter fixing sleeve to fix the cylinder. For example, if the pipe member 1 is a square pipe, the fixing of the cylinder can be conveniently achieved by providing an adapter sleeve such as an outer inner circle.

[0032] The diameter of the pipe member 1 of the present invention is not directly related to the diameter of the cylinder. As shown in the above example, the diameter of the pipe member 1 is larger than the outer circumference of the cylinder, so that the cylinder can be mounted by screwing; when the flange is used, the pipe member 1 is The diameter can be approximately or less than the cylinder diameter. The pipe member 1 serves as a connecting member for replacing the guide post or the frame in the prior art, and only needs to satisfy basic structural functions, such as mounting a cylinder, a mold or a feeding mechanism.

[0033] The middle of the pipe member 1 is provided with a feeding hole 12, and a feeding mechanism is disposed at the position of the feeding hole 12. As shown in FIG. 1, the feeding mechanism of the embodiment is a first-stage pushing structure, and the feeding cavity 7 Located at the front of the press cake mold, it is a horizontal U-shaped structure, and the U-shaped cavity mouth is facing the hopper 6 side. A pusher punch 9 is disposed in the cavity below the hopper 6, and a pusher cylinder 5 is disposed outside the cavity, and the pusher punch 9 is driven by the pusher cylinder 5 to push the metal scraps in the cavity below the hopper 6. Material chamber 7.

[0034] In actual work, the left cylinder 2 and the right cylinder 3 are initially in a reduced cylinder state. The first step: the right cylinder piston rod 31 is extended, and the right punch 32 enters the right end of the mold 8, and the right end of the mold 8 is closed. Step 2: Push the cylinder 5 action

Push the pusher punch 9 forward and push the metal scrap under the hopper 6 into the feed chamber 7. The third step: the left cylinder piston rod 21 is pushed forward, and the left punch 22 presses the chips in the feeding chamber 7 into the mold 8. Since the right end of the mold 8 has been closed by the right punch 32, the scrap is two The left and right punches of the end are closed, and the left and right punches pressurize the chips together to form a chip cake. Step 4: Left cylinder piston rod 21 continues to feed, right cylinder piston rod 3

1 active shrink cylinder or passive slave cylinder, the left punch 22 and the right punch 32 sandwich the finally formed chip cake and remove it from the mold 8 into the space between the mold 8 and the right cylinder 3, Then, the left cylinder 2 is retracted, and the chip cake is clamped from the left and right punches, and falls under the action of gravity, and falls from the discharge hole 14 and falls on the discharge device. Of course, the above-mentioned step-by-step description is to more clearly demonstrate the movement of each component in an action cycle. Actually, it is not strictly necessary to follow the sequence of steps. For example, according to the coordination arrangement, the push step and the right punch can be completely performed. Peer at the same time.

Embodiments of the invention

[0035] Example 2, bar extrusion machine or hydraulic press:

[0036] The bar extruder or the hydraulic press of the hydraulic machine having the tubular structure according to the present invention comprises a pipe member and a main oil cylinder and an ejection cylinder respectively disposed at both ends of the pipe member, and the power of the ejector cylinder is much smaller than that of the main cylinder, only The auxiliary cylinder is used, the extrusion head or the punch is arranged at the front end of the piston rod of the main cylinder, and the feeding mechanism and the mold are arranged in the middle of the pipe. The actual working 吋 main cylinder squeezes or punches the material in the feeding mechanism, and uses the mold pair The molding is carried out, and after the molding, the ejection cylinder is used for demolding. As in the first embodiment, the cylinders at both ends can be fixedly mounted by means of a threaded cap, a flange, a snap key or a fixing sleeve. Mold through the fixing sleeve The tube is fixed to the inner circumference of the tube, and the feeding mechanism is fixed to the outside of the tube by a fixing bracket, and the feeding chamber is located at the front of the mold.

[0037] Example 3, profile extruder:

[0038] The profile extruder of the hydraulic machine having the tubular structure according to the present invention comprises a pipe member and a main cylinder and an extrusion die respectively disposed at two ends of the pipe member, and an extrusion head is disposed at a front end of the piston rod of the main cylinder, and the extrusion die has a profile The cross-sectional shape, the feeding mechanism is connected to the feeding chamber at the front of the extrusion die, the piston rod of the main cylinder is extended, the material in the feeding cavity is extruded into the extrusion die to form a profile, and the rear part of the extrusion die is arranged The material mechanism undertakes the profile material.

The above description is illustrative of the present invention and is not intended to limit the invention, and the invention may be modified in any form without departing from the spirit of the invention. The names of the left and right cylinders are only for better understanding of the drawings, and the positional relationship between the left and the right is not strictly limited. It is also called the first cylinder and the second cylinder; the arrangement direction is not necessarily horizontal, and the vertical setting is The shaft is also a vertical line.

Claims

Claim

[Claim 1] A hydraulic machine of a cylindrical structure, characterized in that: a pipe member is used as a connecting frame, a main oil cylinder is disposed at one end of the pipe member, a punch or an extrusion head is disposed at a front end of the piston rod of the main oil cylinder, and a molding die is disposed on the pipe fitting At one end or in the middle of the pipe, the feed cavity is placed at the front of the forming mold, between the main cylinder and the forming die, and the central axes of the main cylinder and the die are all on the same horizontal or vertical line.

[Claim 2] The hydraulic machine of the cylindrical structure according to claim 1, wherein: the molding die is disposed at a middle portion of the pipe member, and the other end of the pipe member is provided with a second oil cylinder, and the second cylinder is equal in power to the main oil cylinder The auxiliary cylinder or power is much smaller than the auxiliary cylinder of the main cylinder.

[Claim 3] The hydraulic machine of the tubular structure according to claim 1 or claim 2, wherein: the pipe member is a circular pipe or a square pipe, and may be formed by casting or extrusion or rolling. A steel plate bending or splicing welding combination can be used.

[Claim 4] The hydraulic machine of the tubular structure according to claim 1 or claim 2, wherein: the main cylinder or the second cylinder is formed with an external thread and a finishing surface on the outer circumference of the cylinder at one end of the piston rod, The inner circumference of the two ends of the pipe member or the inner circumference of the adapter is machined with an internal thread, and the cylinder is mounted by the engagement of the internal and external threads, and the same cap is used tightly.

[Claim 5] The hydraulic machine of the tubular structure according to claim 1 or claim 2, wherein: the main cylinder or the second cylinder is located at one end of the piston rod and is attached to the connection by a flange and a fastener. Both ends of the part.

[Claim 6] The hydraulic machine of the cylindrical structure according to claim 1, wherein: the middle portion of the pipe member is located at a position of the feeding chamber, and a feeding hole is provided, and a feeding mechanism is disposed at a position of the feeding hole, U The feed chamber is located at the front of the presser mold and the vent is facing the hopper side.

[Claim 7] The hydraulic machine of the cylindrical structure according to claim 1, wherein a discharge hole is provided below the discharge space.

[Claim 8] The hydraulic machine of the tubular structure according to claim 1 or claim 2, wherein: for the chip cake machine, the left and right cylinders (2) and the right cylinder are respectively provided at both ends of the pipe member (1) (3) ), a punch is arranged at the front end of the cylinder rod, a mold (8) is arranged in the middle of the pipe (1), and a feeding chamber (7) is arranged between the left cylinder (2) and the mold (8).

[Claim 9] The hydraulic machine of the tubular structure according to claim 1 or claim 2, wherein: the bar extruder or the hydraulic press, the main cylinder and the auxiliary cylinder are disposed at both ends of the pipe member, and the main cylinder piston The front end of the rod is provided with an extrusion head or a punch, and a feeding chamber and a mold are arranged in the middle of the tube. The main cylinder uses a mold to press-form the material in the feeding chamber, and after the molding, the ejection cylinder is used for demoulding.

[Claim 10] The hydraulic machine of the tubular structure according to claim 1, wherein: the profile extruder, the main cylinder and the extrusion die are disposed at both ends of the pipe member, and the extrusion head is provided at the front end of the piston rod of the main cylinder The extrusion die has a profile cross-sectional shape, and a feeding mechanism communicating with the feeding cavity is arranged at the front of the extrusion die, and the main cylinder squeezes the material in the feeding cavity into the extrusion die to form a profile.