Polyurethane chain processing device

Abstract

The utility model discloses a polyurethane chain processing device which comprises a machine frame, a chain forming mechanism and a steel wire tension adjusting mechanism are arranged on the machine frame, the chain forming mechanism comprises an upper heating plate, a forming die, a lower heating plate and a press machine, the forming die is arranged between the upper heating plate and the lower heating plate, and the press machine pressurizes the upper heating plate. The steel wire tension adjusting mechanism comprises a tension adjusting motor and a steel wire locking seat; the tension adjusting motor is used for adjusting the tension of the steel wire; the steel wire locking base is located on the side face of the forming die and provided with a long groove hole allowing a steel wire to penetrate through and a locking bolt for fixing the steel wire. The heating plates are respectively arranged on the upper side and the lower side of the forming die, and the multi-area independent temperature control modules are arranged in the heating plates, so that the heating temperature can be independently controlled, local hotter or supercooling is eliminated, the curing rate of a polyurethane material is more balanced, and the forming efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyurethane chain processing technical field, especially polyurethane chain processing device. BACKGROUND

[0002] As a key component of industrial transmission system, polyurethane chain is widely used in the fields of automatic production line, logistics conveying equipment and heavy machinery due to its excellent wear resistance, corrosion resistance and high load capacity. Its manufacturing process usually includes raw material mixing, heating curing, pressure forming and post-processing, etc. The heating and pressure link directly determines the mechanical properties and dimensional accuracy of the chain. However, the existing processing equipment has significant defects in key technical links, which restricts the improvement of product quality and production efficiency.

[0003] The traditional processing equipment has the following problems:

[0004] 1. Insufficient heating uniformity: The existing equipment mostly adopts single-layer or single-zone heating plate structure, and the heat conduction path is single. Especially when processing large-size or special-shaped chains, temperature gradient is easy to form between the edge and the center of the heating plate, resulting in uneven local curing rate of polyurethane material.

[0005] 2. Insufficient pressure control precision: In the forming stage, pressure instability easily causes uneven material flow, resulting in chain tooth shape precision out of tolerance, and further affecting the stability of transmission engagement. INVENTION CONTENTS

[0006] In order to solve the above problems, the utility model provides a kind of polyurethane chain processing device with compact structure, accurate temperature control and controllable pressure.

[0007] Therefore, the technical scheme of the utility model is as follows: a polyurethane chain processing device, comprising a rack, a chain forming mechanism and a steel wire tension adjusting mechanism are arranged on the rack, the chain forming mechanism comprises an upper heating plate, a forming die, a lower heating plate and a press, the forming die is arranged between the upper heating plate and the lower heating plate, and the press is used to pressurize the upper heating plate;The steel wire tension adjusting mechanism comprises a tension adjusting motor and a steel wire locking seat, and the tension adjusting motor is used to adjust the steel wire tension;The steel wire locking seat is located on the side surface of the forming die, and a long slot hole for the steel wire to pass through and a locking bolt for fixing the steel wire are arranged on the steel wire locking seat.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the upper heating plate and the lower heating plate are each provided with a plurality of independent temperature control modules inside.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a plurality of presses are arranged side by side on the rack, and a pressure disc and a power mechanism for driving the pressure disc to rise and fall are arranged on each press.

[0010] As a preferred scheme of the above scheme and on the basis of the above scheme: the pressing disc is arranged separately from the upper heating plate and applies force on the upper heating plate; or the upper heating plate is fixed on the pressing disc, and the pressing disc drives the upper heating plate to move downwards and act on the forming die.

[0011] As a preferred scheme of the above scheme and on the basis of the above scheme: the forming die is composed of a plurality of die units, each of which comprises a lower die and an upper die, the lower die is provided with a clamping groove, and the upper die is provided with a convex strip, and the two are clamped and matched; a channel for the steel wire to pass through is arranged between the upper die and the lower die.

[0012] As a preferred scheme of the above scheme and on the basis of the above scheme: the steel wire tension adjusting mechanism is provided with two tension adjusting motors arranged oppositely, and the two tension adjusting motors are respectively installed on a sliding table; an adjusting wheel is arranged at the output end of the tension adjusting motor and used for winding the steel wire.

[0013] As a preferred scheme of the above scheme and on the basis of the above scheme: the steel wire locking seat is composed of a base and an upper plate, and arc-shaped grooves are arranged on the opposite surfaces of the base and the upper plate and can be spliced into a long slot hole; a plurality of locking holes penetrating through the long slot hole are arranged on the upper plate and work in cooperation with locking bolts.

[0014] As a preferred scheme of the above scheme and on the basis of the above scheme: the lower heating plate is provided with a heat insulation layer on the side surface.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. One heating plate is arranged on each of the upper side and the lower side of the forming die, a plurality of independent temperature control modules are arranged in the heating plate, the heating temperature can be independently controlled, local overheating or overcooling is eliminated, the solidification rate of the polyurethane material is more balanced, and the forming efficiency is improved.

[0017] 2. A plurality of presses are arranged on the forming die, the multiple-point pressing discs are synchronously actuated, vertical pressure cooperation is realized, the material compactness is improved, the chain tooth shape precision is improved, and the stability of the later transmission engagement is ensured.

[0018] 3. A steel wire tension adjusting mechanism is arranged at the front end of the forming die, the steel wire is adjusted to the same tension by the tension adjusting motor one by one, and then is locked and fixed on the steel wire locking seat, so that the steel wire cannot slide when the die is closed, and the quality of the chain is ensured.

[0019] 4. The forming die is modularly designed and is composed of a plurality of die units, the modular design is more convenient for maintenance, and the service life of the equipment is greatly prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the embodiment 1.

[0021] Figure 2 is a partial enlarged view of Figure 1 ;

[0022] Figure 3 is a structural side view of Example 1;

[0023] Figure 4 is an A-A sectional view of Figure 3 ;

[0024] Figure 5 is a structural schematic view of the mold unit of Example 1;

[0025] Figure 6 is a structural schematic view of the steel wire tension adjusting mechanism of Example 1;

[0026] Figure 7 is a structural top view of the steel wire tension adjusting mechanism of Example 1;

[0027] Figure 8 is a structural schematic view of Example 2.

[0028] In the drawings, reference numerals: rack 1, chain forming mechanism 2, upper heating plate 21, forming mold 22, lower mold 221, upper mold 222, clamping groove 223, convex strip 224, passage 225, lower heating plate 23, press 24, heat insulation layer 25, pressure plate 241, power mechanism 242, steel wire tension adjusting mechanism 3, tension adjusting motor 31, steel wire locking seat 32, sliding table 33, adjusting wheel 34, base 35, upper plate 36, long slot hole 37, locking hole 38, steel wire 4. DETAILED DESCRIPTION

[0029] In the description of the present application, it should be explained that for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0030] In addition, the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features defined can explicitly or implicitly include one or more features, and in the description of the utility model, the meaning of "several", "several" is two or more than two, unless otherwise explicitly specified.

[0031] Embodiment 1

[0032] The polyurethane chain processing device described in this embodiment comprises a rack 1, and a chain forming mechanism 2 and a steel wire tension adjusting mechanism 3 are arranged on the rack 1; the chain forming mechanism 2 comprises an upper heating plate 21, a forming die 22, a lower heating plate 23 and a press 24, the forming die 22 is arranged between the upper heating plate 21 and the lower heating plate 23, a plurality of independent temperature control modules are arranged in the upper heating plate 21 and the lower heating plate 23, the temperature control module is a mature product on the market, and a heat insulation layer 25 is arranged on the side of the lower heating plate 23 facing the operator, so as to avoid the operator being scalded by the lower heating plate.

[0033] A plurality of presses 24 are arranged side by side on the rack 1, a pressure disc 241 and a power mechanism 242 for driving the pressure disc to ascend and descend are arranged on each press 24, the power mechanism can be a servo motor, a plurality of servo motors simultaneously drive a plurality of pressure discs 241 to descend, so as to apply pressure to the upper heating plate 21, thereby making the filler in the forming die 22 bear uniform stress and having good forming quality.

[0034] The forming die 22 is composed of a plurality of die units, each die unit comprises a lower die 221 and an upper die 222, the lower die 221 is provided with a clamping groove 223, and the upper die 222 is provided with a convex strip 224, the two are clamped and matched and will not be dislocated; a passage 225 for the steel wire 4 to pass through is arranged between the upper die 222 and the lower die 221, the steel wire 4 can be placed between the upper die 222 and the lower die 221, and then the filler is filled into the upper die 222 and the lower die 221, so that the steel wire 4 is kept in the middle position.

[0035] The steel wire tension adjusting mechanism 3 comprises two tension adjusting motors 31 and a steel wire locking seat 32 arranged opposite to each other, an adjusting wheel 34 is arranged on the output end of the tension adjusting motor 31 and used for winding the steel wire 4, the tension adjusting motor 31 can be a servo motor, the same torque is applied to the steel wire 4 through the adjusting wheel 34, so that the tension of all the steel wires 4 is kept consistent; the two tension adjusting motors 31 are respectively installed on a sliding table 33, the position of the tension adjusting motor 31 is adjusted through a hand wheel, so that the adjusting wheel 34 is opposite to the position of the steel wire 4.

[0036] The steel wire locking seat 32 is located on the side of the forming die and is composed of a base 35 and an upper plate 36. The opposite surfaces of the base 35 and the upper plate 36 are provided with arc-shaped grooves, which can be spliced into a long slot hole 37 for the steel wire to pass through. The upper plate 36 is provided with a plurality of locking holes 38 penetrating the long slot hole. The locking bolt can be threadedly connected with the locking hole 38 and pass through the locking hole to tightly lock the steel wire, so that the steel wire maintains the set tension and will not be displaced during the chain forming.

[0037] Taking a polyurethane chain with a processing width of 50 mm as an example, the processing steps are as follows:

[0038] 1) Assemble the equipment and place the steel wire 4 between the upper die 222 and the lower die 221 in advance;

[0039] 2) Fill the polyurethane raw material into the die, start the upper heating plate 21 and the lower heating plate 23 to a set temperature of 110℃, and soften the polyurethane raw material;

[0040] 3) Use the sliding table 33 to move the tension adjusting motor 31 to the position opposite to the steel wire 4, and wind the steel wire 4 on the adjusting wheel 34 one by one (the other end of the steel wire is a free end). The tension adjusting motor 31 applies a set torque to make the steel wire 4 reach a set tension;

[0041] 4) Tighten the locking bolt corresponding to the long slot hole where the steel wire 4 is located to firmly fix the steel wire 4;

[0042] 5) Repeat steps 3) and 4) to adjust all steel wires to the same tension and fix them;

[0043] 6) Start the press 24, and all the pressure plates 241 are synchronously pressed down to apply uniform pressure of 12 MPa to the upper heating plate 21, so that the polyurethane raw material is formed in the die. After forming, stop heating and keep pressure for 60 minutes. The surface of the formed chain is smooth and bubble-free, and the tensile strength reaches 120% of the industry standard.

[0044] Example 2

[0045] The structure of this example is similar to that of example 1, except that the upper heating plate 21 of this example is fixed on the pressure plate 241. When in use, the pressure plate 241 can drive the upper heating plate 21 to move down and act on the forming die 22.

[0046] When processing, fill the polyurethane raw material into the die. The pressure plate 241 first drives the upper heating plate 21 to move down and contact the polyurethane raw material (at this time, no pressure is applied). Start the upper heating plate 21 and the lower heating plate 23 to a set temperature (more than 100℃). Then adjust the tension of the steel wire 4. After adjustment, the pressure plate 241 continues to move down to apply pressure to the die, thereby obtaining a formed polyurethane chain.

[0047] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A polyurethane chain processing apparatus comprising a frame, characterized by: The rack is provided with a chain forming mechanism and a steel wire tension adjusting mechanism, the chain forming mechanism comprises an upper heating plate, a forming die, a lower heating plate and a press, the forming die is arranged between the upper heating plate and the lower heating plate, and the press applies pressure to the upper heating plate; the steel wire tension adjusting mechanism comprises a tension adjusting motor and a steel wire locking seat, the tension adjusting motor is used for adjusting the steel wire tension; the steel wire locking seat is located at the side of the forming die, and is provided with a long slot hole for the steel wire to pass through and locking bolts for fixing the steel wire.

2. A polyurethane chain processing device as claimed in claim 1, characterized in that: The upper heating plate and the lower heating plate are both internally provided with a plurality of independent temperature control modules.

3. A polyurethane chain processing device as claimed in claim 1, characterized in that: A plurality of presses are arranged side by side on the rack, and each press is provided with a pressure disc and a power mechanism for driving the pressure disc to ascend and descend.

4. A polyurethane chain processing device as claimed in claim 3, characterized in that: The pressure disc is separately arranged with the upper heating plate and applies force to the upper heating plate; or the upper heating plate is fixed on the pressure disc, and the pressure disc drives the upper heating plate to descend and act on the forming die.

5. A polyurethane chain processing device as claimed in claim 1, characterized in that: The forming die is composed of a plurality of die units, each die unit comprises a lower die and an upper die, the lower die is provided with a clamping groove, and the upper die is provided with a convex strip, and the two are clamped and matched; a channel for the steel wire to pass through is arranged between the upper die and the lower die.

6. A polyurethane chain processing device as claimed in claim 1, characterized in that: The steel wire tension adjusting mechanism is provided with two tension adjusting motors arranged oppositely, and the two tension adjusting motors are respectively mounted on a sliding table; an adjusting wheel is arranged at the output end of the tension adjusting motor and used for winding the steel wire.

7. A polyurethane chain processing device as claimed in claim 1, characterized in that: The steel wire locking seat is composed of a base and an upper plate, and the opposite surfaces of the base and the upper plate are provided with arc-shaped grooves and can be spliced into a long slot hole; a plurality of locking holes penetrating through the long slot hole are arranged on the upper plate, and the locking holes work in cooperation with the locking bolts.

8. A polyurethane chain processing device as claimed in claim 1, characterized in that: A heat insulation layer is arranged on the side of the lower heating plate.

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