A joint track shoe rib bottom surface positioning glue-hanging mold and glue-hanging method

Abstract

The present invention proposes a mold and method for applying glue to the bottom surface of the ground reinforcement of the conjoined track plate. The application of glue is achieved by positioning the bottom surface of the ground reinforcement of the conjoined track plate, and two machined boring holes of the conjoined track plate are penetrated with rods, wherein the metal straight rod does not need to be assembled or disassembled, and only serves as a mold, which can avoid preheating of the metal rod, save time for assembling and disassembling the metal rod, simplify the process of applying glue to the conjoined track plate, and improve the quality stability of the application of glue to the conjoined track plate. Compared with the currently used method of applying glue by positioning two machined boring holes, the efficiency of applying glue of the present invention is increased by 1 / 3, which can solve the problems of high labor intensity of workers and long product processing process, meet the needs of mass production, and is suitable for production and promotion in the field of special vehicles.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber coating for conjoined crawler shoes, and particularly relates to a rubber coating mold and a rubber coating method for positioning the bottom surface of the grounding ribs of conjoined crawler shoes. Background Art

[0002] The crawler is one of the main components of the walking system of special vehicles and plays a decisive role in the mobility and reliability of the whole vehicle. The crawler usually consists of crawler shoes, crawler pins, sprockets and connecting parts. Among them, the crawler shoe is an important component of the crawler. Its weight is distributed on a large supporting surface, which can ensure the passing performance of the vehicle on soft ground, reduce the driving resistance, and has good adhesion to the ground. At the same time, through the interaction between the crawler shoe and the ground, the traction force of the crawler propulsion device can be realized. Although the crawler of special vehicles is wide, it can reduce the pressure, but the metal pattern at the local contact point still has a great impact on the road surface and is easy to damage the road surface. The rubber-coated crawler can well avoid such problems. The rubber-coated crawler is beneficial to the shock absorption system of special vehicles, can reduce its loss, ensure that the overall cost is maintained at a reasonable level and has high reliability and mobility, representing the future development trend of special vehicle technology.

[0003] The structure of the conjoined crawler shoe is as Figure 1 shown. At present, when rubber coating the conjoined crawler shoe, metal rods are usually inserted into the machined boring holes of the conjoined crawler shoe for positioning.

[0004] As Figure 2 shown, two metal rods with a diameter of 34 mm pass through two machined boring holes with a diameter of 34 mm arranged in parallel on the conjoined crawler shoe, and are placed in the mold to ensure that the conjoined crawler shoe is flat in the mold. The rubber is vulcanized and formed under high temperature and high pressure by using the molding process of filling rubber blocks or the injection molding process of rubber through a rubber channel, and finally the rubber coating of the conjoined crawler shoe is realized.

[0005] In the above process scheme, each metal rod includes three die cores, as Figure 3 shown. Specifically, there are two first die cores and one second die core. The connecting shafts of the two first die cores are respectively inserted into both ends of the second die core, and the first die core and the second die core are connected by a male-female buckle method to form a metal rod for positioning the machined boring hole of the conjoined crawler shoe.

[0006] Before rubber coating, the die cores need to be assembled in the Figure 3 way, the metal rod is preheated, and after rubber coating, the metal rod needs to be disassembled. The processes are numerous, the operation is difficult, and the time consumption is long, resulting in low work efficiency, affecting the rubber coating quality and rubber coating efficiency of the conjoined crawler shoe. At the same time, the disassembly process of the metal rod will cause different degrees of damage to the rubber block of the crawler shoe, thereby reducing the service life of the conjoined crawler shoe, affecting the use performance of the whole crawler, and directly affecting the mobility of special vehicles. Summary of the Invention

[0007] (I) Technical issues to be solved

[0008] The present invention proposes a rubber-hanging mold and a rubber-hanging method for positioning the bottom surface of the ground reinforcement of a joint track shoe, so as to solve the technical problems of multiple processes and difficulty in pulling out the rods caused by the current use of two machined boring holes for positioning, avoid the preheating, assembly and disassembly processes of the metal rods, simplify the rubber-hanging process of the joint track shoe, improve production efficiency and ensure the quality of rubber-hanging.

[0009] (II) Technical Solution

[0010] In order to solve the above technical problems, the present invention proposes a mold for positioning and applying glue on the bottom surface of the grounding ribs of a combined track shoe, which includes an upper mold and a lower mold, and a cavity for placing the combined track shoe to be glued is formed between the upper mold and the lower mold; the lower mold includes a boss arranged in the middle of the bottom surface of the cavity and track shoe grounding rib accommodating cavities located on both sides of the boss; the boss is used to transfer heat to the bottom of the combined track shoe; the depth of the grounding rib accommodating cavity is equal to the distance from the center of the machined boring hole of the track shoe to the bottom of the grounding rib.

[0011] Furthermore, a baffle is provided on the outer side of the lower mold to limit the end position of the metal straight rod inserted into the mold when applying glue.

[0012] In addition, the present invention also provides a method for positioning and applying glue to the bottom surface of the ground reinforcement of a combined track shoe, which is carried out using the above-mentioned mold.

[0013] Furthermore, the method specifically includes: inserting a metal straight rod into two machined boring holes of the combined track shoe, and then placing the combined track shoe with two metal rods into the lower mold by positioning the bottom surface of the ground rib; using an elastomer rubber block as a filling material, placing it in the concave position of the upper part of the combined track shoe, closing the mold and pressing it to start vulcanization, and completing the rubber coating after a certain period of vulcanization to obtain a rubber-coated combined track shoe.

[0014] Furthermore, the diameter of the metal straight rod is 20 mm.

[0015] Furthermore, the elastomer is selected from natural rubber.

[0016] Further, vulcanization is performed by using a compression molding process or an injection molding process.

[0017] (III) Beneficial effects

[0018] The present invention provides a positioning and rubber coating die for the bottom surface of the grounding ribs of a combined crawler plate and a rubber coating method. The rubber coating is realized by positioning the bottom surface of the grounding ribs of the combined crawler plate. A metal straight rod is passed through two machining boring holes of the combined crawler plate. The metal straight rod does not need to be assembled and disassembled and only plays the role of mold lifting. It can avoid preheating the metal rod, save the time for assembling and disassembling the metal rod, simplify the rubber coating process of the combined crawler plate, and improve the quality stability of the rubber coating of the combined crawler plate. Compared with the existing rubber coating method using two machining boring holes for positioning, the rubber coating efficiency of the present invention is increased by 1 / 3. It can solve the problems of high labor intensity of workers and long product processing procedures, meet the needs of mass production, and is suitable for production and promotion in the field of special vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a combined crawler plate: (a) front view, (b) side view;

[0020] Figure 2 It is a schematic diagram of a die and a metal rod in the existing rubber coating method for a combined crawler plate;

[0021] Figure 3 It is a schematic structural diagram of a metal rod used in the existing rubber coating method for a combined crawler plate;

[0022] Figure 4 It is a schematic structural diagram of the positioning and rubber coating die for the bottom surface of the grounding ribs in the present invention;

[0023] Figure 5 It is a side view of the lower die of the positioning and rubber coating die for the bottom surface of the grounding ribs in the present invention;

[0024] Figure 6 It is a schematic diagram of a die and a metal straight rod in the positioning and rubber coating method for the bottom surface of the grounding ribs in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] To make the objectives, contents, and advantages of the present invention clearer, the following further describes the detailed implementation manners of the present invention in conjunction with the drawings and embodiments.

[0026] The present invention provides a positioning and rubber coating method for the bottom surface of the grounding ribs of a combined crawler plate. The positioning and rubber coating die for the bottom surface of the grounding ribs of the combined crawler plate used in this method has a structure as Figure 4 shown, including an upper die 1, a lower die 2, and a baffle 4.

[0027] The side view structure of the lower die 2 is as Figure 5As shown, it includes a boss 3 arranged in the middle of the bottom surface of the cavity and track shoe grounding rib accommodating cavities located on both sides of the boss 3. The boss 3 is used to transfer heat to the bottom of the combined track shoe. The depth of the grounding rib accommodating cavity is equal to the distance from the center of the track shoe machine boring hole to the bottom of the grounding rib, so as to achieve the bottom surface positioning of the grounding rib and ensure the glue hanging size. In addition, a baffle 4 is arranged on the outside of the lower mold 2, which is used to limit the end of the metal straight rod inserted into the mold when glue is hung.

[0028] The specific steps of the method for applying glue to the joint track plate using the above mold are:

[0029] First clean the joint track plate, then spray the adhesive. Figure 6 As shown in , a metal straight rod with a diameter of 20mm is selected and inserted into the two machined boring holes of the combined track plate, and then the combined track plate with two metal rods is placed in the lower mold through the bottom surface positioning method of the ground rib. Elastomer (such as natural rubber) rubber blocks are used as filling materials and are placed in the upper concave position of the combined track plate. The mold is started, and the upper mold begins to move downward. After the mold is closed and pressed, vulcanization begins. After a certain period of vulcanization using a compression molding process or an injection molding process, the rubber coating is completed to obtain a rubber-coated combined track plate, in which the vulcanized track plate is a rubber-coated raceway surface.

[0030] Example 1

[0031] Preform the natural rubber compound into rubber blocks, insert the joint track shoe into the metal straight rod, put it into the mold, ensure that the skeleton is flat in the mold, and the bottom of the ground bar is accurately positioned. Close the mold for vulcanization, the pressure is 13Mpa, the temperature is 170℃, and the mold is removed after 25 minutes to obtain the rubber-coated joint track shoe. The rubber-coated size tolerance does not exceed ±0.5.

[0032] Example 2

[0033] Preform the natural rubber compound into rubber blocks, insert the joint track shoe into the metal straight rod, put it into the mold, ensure that the skeleton is flat in the mold, the bottom of the ground bar is accurately positioned, close the mold for vulcanization, the pressure is 14Mpa, the temperature is 160℃, and the mold is removed after 30 minutes to obtain the rubber-coated joint track shoe. The rubber-coated size tolerance does not exceed ±0.6.

[0034] Example 3

[0035] Preform the natural rubber compound into rubber blocks, insert the joint track shoe into the metal straight rod, put it into the mold, ensure that the skeleton is flat in the mold, and the bottom of the ground bar is accurately positioned. Close the mold for vulcanization, the pressure is 15Mpa, the temperature is 150℃, and the mold is removed after 40 minutes to obtain the rubber-coated joint track shoe. The rubber-coated size tolerance does not exceed ±1.0.

[0036] ​The present invention adopts a method for rubber coating of a combined crawler plate with positioning at the bottom of the ground reinforcement rib. The metal straight rod used for rubber coating of the combined crawler plate does not need to be disassembled and assembled. The inner diameter of the metal straight rod can be smaller than the machined boring hole, and the metal does not need to be preheated before the vulcanization process. It can simplify the rubber coating process of the combined crawler plate, has strong operability, and is easy to realize continuous production.

[0037] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A method for positioning and applying rubber to the bottom surface of the ground reinforcement of a conjoined track shoe, characterized in that: The method for positioning and gluing the bottom surface of the ground ribs of the combined track shoes adopts a mold for positioning and gluing the bottom surface of the ground ribs of the combined track shoes, which includes an upper mold and a lower mold, and a cavity for placing the combined track shoes to be glued is formed between the upper mold and the lower mold; the lower mold includes a boss arranged in the middle of the bottom surface of the cavity and a track shoe ground rib accommodating cavity located on both sides of the boss, and a baffle is arranged on the outer side of the lower mold for limiting the end of the metal straight rod inserted into the mold when gluing; the boss is used to transfer heat to the bottom of the combined track shoes; the depth of the ground rib accommodating cavity is equal to the distance from the center of the track shoe machine boring hole to the bottom of the ground rib; the method for positioning and gluing the bottom surface of the ground ribs of the combined track shoes specifically includes: Insert the metal straight rod into the two machined holes of the combined track shoe, and then put the combined track shoe with two metal rods into the lower mold by positioning the bottom surface of the ground rib; use the elastomer rubber block as the filling material, put it into the concave position of the upper part of the combined track shoe, start vulcanization after the mold is closed and pressed, and complete the rubber coating after a certain period of vulcanization to obtain the rubber-coated combined track shoe; the diameter of the metal straight rod is 20 mm; the elastomer is made of natural rubber; and the vulcanization is carried out by compression molding or injection molding.

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