阅读说明：本技术 一种环保型高密度对重块的制备工艺 (Preparation process of environment-friendly high-density counterweight block ) 是由 黄业华 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种环保型高密度对重块的制备工艺,具体步骤包括上料、加热、出料、称重、送料、一次热压、二次加热与热压和码垛。本工艺采用的是高温热压与热模锻工艺相结合的方式,能够有效提高产品的密度,且原料采用的是废钢屑、废铁屑、粒子钢等废旧原料,实现资源再利用,节能环保。(The invention discloses a preparation process of an environment-friendly high-density counterweight block. The process adopts a mode of combining high-temperature hot pressing and hot die forging, can effectively improve the density of the product, adopts waste steel scraps, waste scrap irons, particle steel and other waste raw materials as raw materials, realizes resource recycling, and is energy-saving and environment-friendly.)

1. The preparation process of the environment-friendly high-density counterweight block is characterized by comprising the following steps of: the method comprises the following steps:

step 1, feeding and heating: the raw materials mixed according to the formula enter a first heating system from a feeding system, and the raw materials are fully and uniformly heated to 300-700 ℃ in the first heating system;

step 2, discharging and weighing: the heated raw materials are fed into an automatic feeding hopper through a conveying device, a metering and weighing device is arranged below the automatic feeding hopper, the raw materials with set weight are weighed, and the raw materials are fed into a feeding mechanism;

step 3, feeding and primary hot pressing: the feeding mechanism sends the raw materials into the hot-pressing lower die, the hot press works to press down the hot-pressing upper die to complete one-time hot pressing, and the semi-finished product formed by hot pressing is placed on the semi-finished product receiving table;

step 4, secondary heating and hot pressing: sending the semi-finished product into a second heating system for secondary heating until the temperature is 850-1200 ℃, sending the heated semi-finished product into a closed hot die forging lower die of a hot die forging press, knocking down the closed hot die forging upper die by the hot die forging press to obtain a finished product counterweight block, and pushing the finished product counterweight block into a finished product material receiving platform;

and step 5, stacking: and stacking the finished product on the finished product receiving table by using a stacking robot.

2. The process for preparing an environment-friendly high-density counterweight block according to claim 1, wherein: the first heating system and the second heating system are respectively a rotary heating furnace and a horizontal pass-through heating furnace.

3. The process for preparing an environment-friendly high-density counterweight block according to claim 2, wherein: and the steps 1 to 3 are simultaneously produced by two production lines, and the two production lines are symmetrically distributed.

4. The process for preparing an environment-friendly high-density counterweight block according to claim 3, wherein: every production line all includes rotary heating furnace, conveyor, automatic feed hopper, measurement weighing device, baffle box, feeding mechanism, hydraulic press, semi-manufactured goods and connects material platform and semi-manufactured goods conveying mechanism, the conveyor feed inlet is in rotary heating furnace's discharge gate below, the conveyor discharge gate is in automatic feed hopper top, the rotatable setting of automatic feed hopper is on the support below is provided with the measurement weighing device, the feed inlet of baffle box with automatic feed hopper corresponds, two semi-manufactured goods conveying mechanism conveys in opposite directions.

5. The process for preparing an environment-friendly high-density counterweight block according to claim 4, wherein: and a material pushing platform is vertically arranged between the two semi-finished product conveying mechanisms, penetrates through the horizontal pass-type heating furnace and conveys the semi-finished products into the closed hot die forging lower die.

6. The process for preparing an environment-friendly high-density counterweight block according to claim 5, wherein: and a hydraulic automatic feeding mechanism is arranged on the front side of the material pushing table.

7. The process for preparing an environment-friendly high-density counterweight block according to claim 4, wherein: and heat preservation layers are arranged on the outer sides of the rotary heating furnace, the conveying device, the automatic feeding hopper, the guide chute, the semi-finished product receiving platform and the semi-finished product conveying mechanism.

Technical Field

The invention relates to the technical field of counterweight block production, in particular to a preparation process of an environment-friendly high-density counterweight block.

Background

The novel counterweight block made of waste raw materials such as waste steel scraps, waste scrap iron, particle steel and the like appears on the market at present, the production process of the counterweight block has two modes, one mode is that the raw materials are mixed and then subjected to one-step hot press forming, and the counterweight block produced by the mode has the defect that the density is only 6.8kg/m³About, and the production process comprehensive work efficiency is lower, and on average every piece is about 60s, if the publication number is: CN1192974808A discloses a method for preparing an elevator counterweight block by a hot-pressing method, and discloses a one-step hot-pressing forming process; the second is a two-time pressing mode, the first cold pressing is carried out to obtain a semi-finished product, and the second hot pressing is carried out after heating, so that the density of the counterweight block produced by the process mode is improved but is only 7.15kg/m³About, the production process is about 40-50 s of comprehensive work efficiency, a semi-finished product after one-time cold press forming is extremely easy to damage in the subsequent processing process, and the qualification rate of the product is low, for example, the publication No. CN111283386A discloses an environment-friendly elevator counterweight block and a preparation method thereof, and particularly discloses a production tool which is subjected to one-time cold pressing and one-time hot pressingThe publication number of the art is: CN107775000A discloses a hot-press molding process of a high specific gravity counterweight block, and also discloses a production process of one-step cold pressing and one-step hot pressing. The clump weight prepared by the two processes has relatively low density and low quality.

Disclosure of Invention

In order to solve the problems, the invention discloses a preparation process capable of preparing a high-density balancing weight.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention relates to a preparation process of an environment-friendly high-density counterweight block, which comprises the following steps:

step 1, feeding and heating: the raw materials mixed according to the formula enter a first heating system from a feeding system, and the raw materials are fully and uniformly heated to 300-700 ℃ in the first heating system;

step 2, discharging and weighing: the heated raw materials are fed into an automatic feeding hopper through a conveying device, a metering and weighing device is arranged at the lower part of the automatic feeding hopper, the raw materials with set weight are weighed, and the raw materials are fed into a feeding mechanism;

step 3, feeding and primary hot pressing: the feeding mechanism sends the raw materials into the hot-pressing lower die, the hot press works to press down the hot-pressing upper die to complete one-time hot pressing, and the semi-finished product formed by hot pressing is placed on the semi-finished product receiving table;

step 4, secondary heating and hot pressing: sending the semi-finished product into a second heating system for secondary heating until the temperature is 850-1200 ℃, sending the heated semi-finished product into a closed hot die forging lower die, knocking down the closed hot die forging upper die by a hot die forging press to obtain a finished product counterweight block, and pushing the finished product counterweight block onto a finished product receiving platform;

and step 5, stacking: and stacking the finished product on the finished product receiving table by using a stacking robot.

The invention is further improved in that: the first heating system and the second heating system are respectively a rotary heating furnace and a horizontal pass-through heating furnace.

The invention is further improved in that: and (3) simultaneously producing by two production lines in the steps from 1 to 3, wherein the two production lines are symmetrically distributed.

The invention is further improved in that: every production line all includes rotary heating furnace, conveyor, automatic feeding hopper, measurement weighing device, the baffle box, feeding mechanism, the hydraulic press, semi-manufactured goods connects material platform and semi-manufactured goods conveying mechanism, the conveyor feed inlet is in rotary heating furnace's discharge gate below, the conveyor discharge gate is in automatic feeding hopper top, automatic feeding hopper rotatable setting is on the support, be provided with measurement weighing device below the support, the feed inlet and the automatic feeding hopper of baffle box correspond, two semi-manufactured goods conveying mechanism convey in opposite directions.

The invention is further improved in that: and a material pushing platform is vertically arranged between the two semi-finished product conveying mechanisms, passes through the horizontal through type heating furnace and conveys the semi-finished products into the closed hot die forging lower die.

The invention is further improved in that: a hydraulic automatic feeding mechanism is arranged at the front side of the material pushing platform.

The invention is further improved in that: and heat preservation layers are arranged on the outer sides of the rotary heating furnace, the conveying device, the automatic feeding hopper, the guide chute, the semi-finished product receiving platform and the semi-finished product conveying mechanism.

The invention has the beneficial effects that: the invention adopts a mode of combining high-temperature hot pressing and hot die forging processes, and can greatly improve the density of the finished product to the weight block to 7.2-7.8 kg/m³The water absorption rate and the water loss rate of the counterweight block are greatly reduced due to high density, so that the requirement of the elevator on the counterweight block is better met; and secondly, the production efficiency is obviously improved, each part of the comprehensive work efficiency is about 20-35 s, and the anti-falling performance exceeds the standard of the counterweight block of the elevator. Removing harmful factors through high-temperature combustion and closed hot die forging to realize green and healthy products

Drawings

FIG. 1 is a schematic view of the production apparatus of the present invention.

FIG. 2 is a top view of the production apparatus of the present invention.

Fig. 3 is a partially enlarged schematic view of fig. 2.

Wherein: 1-feeding system, 2-first heating system, 3-conveying device, 4-automatic feeding hopper, 5-metering weighing device, 6-guide chute, 7-feeding mechanism, 8-oil press, 9-hot pressing upper die, 10-hot pressing lower die, 11-semi-finished product receiving table, 12-semi-finished product conveying mechanism, 13-hydraulic automatic feeding mechanism, 14-second heating system, 15-hot die forging press, 16-closed hot die forging upper die, 17-closed hot die forging lower die, 18-finished product receiving table and 19-palletizing robot.

Detailed Description

In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention relates to a preparation process of an environment-friendly high-density counterweight block, which comprises the following steps:

step 1, feeding and heating: raw materials mixed according to a formula enter a first heating system 2 from a feeding system 1, the raw materials are fully and uniformly heated in a rotary heating furnace, the heating temperature is adjusted within the range of 300-700 ℃ according to different products and different formulas, wherein the first heating system 2 can adopt a rotary heating furnace, and the raw materials are waste raw materials such as waste steel scraps, waste iron scraps, particle steel and the like;

step 2, discharging and weighing: the heated raw materials are fed into an automatic feeding hopper 4 through a conveying device 3, a metering and weighing device 5 is arranged at the lower part of the automatic feeding hopper 4, the raw materials with set weight are weighed, and the raw materials are fed into a feeding mechanism 7;

step 3, feeding and primary hot pressing: the feeding mechanism 7 sends the raw materials into a hot-pressing lower die 10, a hot press works to press down a hot-pressing upper die 9 to finish the manufacture of a semi-finished product, and the semi-finished product falls on a semi-finished product receiving platform 11;

step 4, secondary heating and hot pressing: sending the semi-finished product into a second heating system 14 for secondary heating until the temperature is 850-1200 ℃, sending the heated semi-finished product into a closed hot die forging lower die 17, knocking down an closed hot die forging upper die 16 by a hot die forging press 15 to obtain a finished product counterweight block, and pushing the finished product counterweight block onto a finished product material receiving platform 18, wherein the second heating system 14 can adopt a horizontal through-type heating furnace;

and step 5, stacking: and (4) stacking the finished products on the finished product receiving table 18 by using a stacking robot 19.

And (3) heating in the step (1) to the step (3), simultaneously producing by two production lines, wherein the two production lines are symmetrically distributed, and simultaneously feeding the two production lines by a feeding system (1). Every production line all includes rotary heating furnace, conveyor 3, automatic feed hopper 4, measurement weighing device 5, the baffle box 6, feeding mechanism 7, hydraulic press 8, semi-manufactured goods material receiving platform 11 and semi-manufactured goods conveying mechanism 12, conveyor 3 feed inlet is in the discharge gate below of rotary heating furnace, conveyor 3 discharge gate is in automatic feed hopper 4 top, automatic feed hopper 4 rotatable setting is on the support, be provided with measurement weighing device 5 below the support, the feed inlet of baffle box 6 corresponds with automatic feed hopper 4, two semi-manufactured goods conveying mechanism 12 convey in opposite directions, and be provided with the material pushing platform perpendicularly between two semi-manufactured goods conveying mechanism 12. The front side of the material pushing platform is provided with a hydraulic automatic feeding mechanism 13, and the material pushing platform penetrates through the horizontal through-type heating furnace and conveys the semi-finished product into the closed hot die forging lower die 17. And heat preservation layers are arranged on the outer sides of the rotary heating furnace, the conveying device 3, the automatic feeding hopper 4, the guide chute 6, the semi-finished product receiving table 11 and the semi-finished product conveying mechanism 12, heat preservation covers are arranged on the semi-finished product receiving table 11 and the semi-finished product conveying mechanism 12, and the heat preservation layers are arranged on the outer sides of the heat preservation covers. The heated materials are discharged from a discharge port of a rotary heating furnace, enter a feed port of a conveying device 3, are conveyed into an automatic feeding hopper 4 through the conveying device 3, a metering and weighing device 5 arranged below a bracket for fixing the automatic feeding hopper 4 weighs the materials, a driving mechanism of the automatic feeding hopper 4 drives the automatic feeding hopper to rotate after the weight reaches a set value, the raw materials enter a feeding mechanism 7 through a material guide groove 6 and are conveyed into a hot-pressing lower die 10 of a 18000 KN-40000 KN oil press 8 through the feeding mechanism 7, a hot-pressing upper die 9 is pressed down to obtain a semi-finished product, a pushing mechanism in the oil press 8 pushes the semi-finished product to a semi-finished product receiving platform 11, the semi-finished product at the forefront end is extruded to a semi-finished product conveying mechanism 12 through pushing of a new semi-finished product, the two semi-finished product conveying mechanisms 12 oppositely convey the semi-finished product, a pushing platform is arranged between the two semi-finished product conveying mechanisms 12, the material pushing platform is provided with a plurality of rollers, semi-finished products on two semi-finished product conveying mechanisms 12 are alternately conveyed to the material pushing platform in the conveying process and are pushed to a horizontal through type heating furnace by a hydraulic automatic feeding mechanism 13 to be heated, the end part of the material pushing platform is connected with a closed hot die forging lower die 17 of a 25000 KN-80000 KN hot die forging press 15, the heated semi-finished products enter the closed hot die forging lower die 17, and a closed hot die forging upper die 16 is pressed down to complete secondary hot pressing. Unmanned production is realized in the production process, the labor cost is effectively reduced, and the production safety is improved.

By combining the high-temperature hot pressing and hot die forging processes, the density of the produced balancing weight can reach 7.2-7.8 kg/m³The density of the balancing weight produced by the prior art is higher, and the related test data is as follows:

table 1:

wherein, the raw material formulas of the sample 1, the sample 2 and the sample 3 are the same.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.