Mold convenient for demolding of double sleepers

Abstract

The utility model discloses a mould convenient for demoulding double sleepers, which belongs to the technical field of sleeper production equipment and comprises a base, a mould body is fixedly mounted at the top of the base, two-way screw rods are rotatably mounted on the inner walls of two sides of the base, a rotating shaft is fixedly mounted at the left end of each two-way screw rod, and the rotating shaft is fixedly mounted at the right end of each two-way screw rod. The rotating shaft rotationally penetrates through one side of the base, and two sets of threaded blocks are in threaded connection with the outer side of the two-way lead screw, so that damage to a formed part caused by unstable ejection force can be better avoided, the stability of the demolding process is guaranteed, the defects of cracks, unfilled corners and the like on the surface of a sleeper can be avoided, the quality of the formed part is guaranteed, and the product percent of pass is increased; waste and cost increase caused by product quality problems are reduced, heat of the formed part can be rapidly absorbed, the cooling speed of the formed part is increased, and compared with natural cooling, the mode can enable the formed part to shrink more rapidly, so that a gap is formed between the formed part and the inner wall of the mold, and demolding is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the sleepers production equipment technical field especially, relates to a convenient two -block sleepers draw -out mould. BACKGROUND

[0002] Under the background of the rapid development of railway construction, the demand of double-block sleepers, as the key basic components of railway track structure, is increasing. Double-block sleepers are usually formed by pouring materials such as concrete in a mold and then through processes such as vibration and curing. However, the demolding process has always been a key problem in the production of double-block sleepers. In traditional double-block sleeper production, the demolding efficiency and quality have a significant impact on the entire production process. Some traditional molds use simple mechanical ejector rods or hydraulic ejector devices, but these methods often have difficulty in accurately controlling the ejecting force and direction. For products such as double-block sleepers that have specific shapes and precision requirements, uneven ejecting force may cause the sleeper to be subjected to excessive force in certain areas during the demolding process, resulting in deformation or damage to the sleeper. Some existing molds lack effective cooling measures or have unreasonable cooling methods. Natural cooling methods take too long, which greatly reduces production efficiency. Moreover, the management of cooling media is not convenient, such as the inability to replace cooling fluid with reduced cooling effect in a timely manner or the inability to flexibly control the cooling process, which affects the demolding quality and efficiency. Therefore, we propose a convenient double-block sleeper draw-out mold to solve this problem. SUMMARY

[0003] The utility model aims at providing a convenient double-block sleeper draw-out mold to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A convenient double-block sleeper draw-out mold, comprising: a base, a mold body and a bracket are fixedly installed on the top of the base, a gas cylinder is fixedly installed on the top of the bracket, an upper mold is fixedly installed on the output end of the gas cylinder, the upper mold is located on the top of the mold body, a bidirectional screw rod is rotatably installed on the inner wall of both sides of the base, a rotating shaft is fixedly installed on the left end of the bidirectional screw rod, the rotating shaft is rotatably penetrated to one side of the base, two groups of threaded blocks are threadedly connected to the outer side of the bidirectional screw rod, connecting rods are hingedly connected to the two sides of the two groups of threaded blocks, fixed blocks are hingedly connected to the top ends of the two groups of connecting rods located on the same side, a connecting plate is fixedly installed on the top of the two groups of fixed blocks, a fixed shaft is fixedly installed on the top of the connecting plate, the fixed shaft is slidably penetrated to the top of the base, a top plate is fixedly installed on the top of the fixed shaft, and the top plate is slidably arranged in the interior of the base.

[0006] Preferably, the outer side of the rotating shaft is fixedly provided with a worm gear, one side of the base is fixedly provided with two groups of short plates, the inner sides of the two groups of short plates are rotatably provided with worm gears, and the worm gear is engaged with the worm gear.

[0007] Preferably, the inner side of the mold body is provided with a cavity, and the outer side of the cavity is fixedly provided with a water inlet pipe and a water outlet pipe.

[0008] Preferably, one side of the short plate located at the front side is fixedly provided with a motor one, and the output shaft of the motor one is fixedly connected with the worm gear.

[0009] Preferably, the inner walls of the two sides of the base are both provided with sliding grooves, the two sides of the connecting plate are both fixedly provided with sliding blocks, and the two groups of sliding blocks are slidably arranged in the inner sides of the corresponding sliding grooves.

[0010] Preferably, the outer sides of the water inlet pipe and the water outlet pipe are both provided with control valves.

[0011] In the utility model, the two groups of threaded blocks on the outer side of the bidirectional screw rod are relatively moved, when the bidirectional screw rod drives the two groups of threaded blocks to move close to each other, the connecting plate on the top of the two groups of fixed blocks drives the fixed shaft and the top plate on the top to move upwards, so that the formed part in the inner side of the mold body can be ejected from the mold body, the rotary motion can be stably converted into linear motion, so that the formed part is subjected to stable and controllable ejection force, compared with the pressure fluctuation that may exist in some simple hydraulic or pneumatic ejection modes, the formed part can be better prevented from being damaged due to unstable ejection force, the stability of the demolding process is ensured, the surface of the sleeper can be prevented from appearing cracks, angle defects and the like, the quality of the formed part is ensured, the product qualified rate is improved, the waste and cost increase caused by product quality problems are reduced;

[0012] The utility model discloses a convenient to two block sleepers demolding mould, be provided with cavity, water inlet pipe, water outlet pipe and control valve through setting, through opening control valve, then water inlet pipe pours into cooling liquid to the cavity that the mould body inside opens, it is convenient to cooling demolding to the formed piece, through opening the control valve of water outlet pipe outside, make cooling liquid flow from the cavity, it is convenient to replace brand -new cooling liquid, through water inlet pipe pours into cooling liquid to the cavity in the mould body, and cooling liquid can quickly absorb the heat of formed piece, and accelerates its cooling speed, compared with natural cooling, this mode can make formed piece more rapidly contract, thereby produce the clearance between the inner wall of mould, reduce the friction and adhesion between both, it is convenient to demould, and can effectively take away the heat that mould absorbs in the production process, reduce mould temperature. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 A three-dimensional structure schematic diagram of a convenient to two block sleepers demolding mould is provided for the utility model;

[0014] Fig. 2 A partial sectional view structure schematic diagram of a convenient to two block sleepers demolding mould is provided for the utility model;

[0015] Fig. 3 A bidirectional screw rod structure schematic diagram of a convenient to two block sleepers demolding mould is provided for the utility model.

[0016] In the drawing: 1, base; 2, mould body; 3, worm; 4, worm wheel; 5, rotating shaft; 6, bidirectional screw rod; 7, threaded block; 8, connecting rod; 9, fixed block; 10, connecting plate; 11, fixed shaft; 12, top plate; 13, sliding block; 14, motor one; 15, cavity; 16, water inlet pipe; 17, control valve; 18, water outlet pipe; 19, support; 20, air cylinder; 21, upper mould. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0018] REFERENCE Figs. 1-3The utility model provides a convenient double -block sleeper demoulds mould, include: base 1, the top fixed mounting of base 1 has mould body 2 and support 19, the top fixed mounting of support 19 has pneumatic cylinder 20, the output of pneumatic cylinder 20 fixed mounting has upper mould 21, upper mould 21 is located the top of mould body 2, the both sides inner wall of base 1 rotatably installs two -way screw rod 6, the left end fixed mounting of two -way screw rod 6 has rotation axis 5, rotation axis 5 rotates and penetrates to one side of base 1, the outside screw thread connection of two -way screw rod 6 has two groups of screw blocks 7, and both sides of two groups of screw blocks 7 are hinged link 8, and the top of two groups of link 8 located in the same side is hinged fixed block 9, and the top fixed mounting of two groups of fixed block 9 has connecting plate 10, and the top fixed mounting of connecting plate 10 has fixed axle 11, and fixed axle 11 slidingly penetrates to the top of base 1, and the top fixed mounting of fixed axle 11 has top plate 12, and top plate 12 is slidably arranged in the inside of base 1.

[0019] In the embodiment, the outer side of the rotation axis 5 is fixedly installed with a worm wheel 4, and one side of the base 1 is fixedly installed with two groups of short plates. The inside of the two groups of short plates is rotatably installed with a worm gear 3. The worm wheel 4 is engaged with the worm gear 3, so as to conveniently drive the rotation axis 5 and the two-way screw rod 6 to rotate, conveniently drive the top plate 12 to eject the formed piece in the inside of the mould body 2, and the inside of the mould body 2 is provided with a cavity 15. The outside of the cavity 15 is fixedly installed with a water inlet pipe 16 and a water outlet pipe 18, respectively, so as to conveniently add cooling liquid into the inside of the cavity 15 and conveniently replace the cooling liquid.

[0020] In the embodiment, one side of the short plate located at the front side is fixedly installed with a motor one 14. The output shaft of the motor one 14 is fixedly connected with the worm gear 3, so as to conveniently drive the worm wheel 4 to rotate and conveniently drive the top plate 12 to eject the formed piece. The both side inner walls of the base 1 are all provided with a sliding groove. The both sides of the connecting plate 10 are all fixedly installed with a sliding block 13. The two groups of sliding blocks 13 are all slidably installed in the inside of the corresponding sliding groove, so as to conveniently stably horizontally move the connecting plate 10 up and down. The outside of the water inlet pipe 16 and the water outlet pipe 18 is all provided with a control valve 17, so as to conveniently add the cooling liquid into the inside of the cavity 15 and flow out the cooling liquid.

[0021] In this embodiment, in use, by driving the cylinder 20, the bottom of the upper die 21 is driven to extrude the material in the inside of the mold body 2, by opening the control valve 17, then the water pipe 16 is filled with cooling liquid into the cavity 15 opened in the inside of the mold body 2, which is convenient for cooling and demolding the molded part, by driving the motor one 14, the motor one 14 drives the worm 3 to rotate, the worm 3 drives the worm wheel 4 to rotate, the worm wheel 4 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the bidirectional screw rod 6 to rotate, the two groups of threaded blocks 7 on the outside of the bidirectional screw rod 6 move relative to each other, by the two groups of connecting rods 8 hinged on the two sides of the two groups of threaded blocks 7 and the two groups of fixed blocks 9 hinged on the same side of the two groups of connecting rods 8, when the bidirectional screw rod 6 drives the two groups of threaded blocks 7 to move close to each other, the connecting plate 10 on the top of the two groups of fixed blocks 9 drives the top fixed shaft 11 and the top plate 12 to move upwards, so that the molded part in the inside of the mold body 2 can be ejected from the mold body 2, at this time, by rotating the worm 3 in the opposite direction, the two groups of threaded blocks 7 on the outside of the bidirectional screw rod 6 move away from each other, the connecting plate 10 drives the top fixed shaft 11 and the top plate 12 to move downwards, which is convenient for subsequent continuous injection molding, finally, by opening the control valve 17 on the outside of the water outlet pipe 18, the cooling liquid flows out of the cavity 15, which is convenient for replacing the new cooling liquid.

[0022] The double-block sleeper demolding mold is convenient to use, and the mold body can be demolded conveniently. The principle and implementation manner of the double-block sleeper demolding mold are described by using specific embodiments. The above embodiment is only used for helping to understand the method and the core idea of the double-block sleeper demolding mold. It should be pointed out that the double-block sleeper demolding mold can be improved and modified in many ways without departing from the principle of the double-block sleeper demolding mold, and these improvements and modifications also fall within the protection scope of the double-block sleeper demolding mold.

Claims

1. A mold for easy demolding of double-block sleepers, characterized in that, include: A base (1) is provided, on the top of which a mold body (2) and a bracket (19) are fixedly mounted. A cylinder (20) is fixedly mounted on the top of the bracket (19). An upper mold (21) is fixedly mounted on the output end of the cylinder (20). The upper mold (21) is located on the top of the mold body (2). Bidirectional lead screws (6) are rotatably mounted on the inner walls of both sides of the base (1). A rotating shaft (5) is fixedly mounted on the left end of the bidirectional lead screw (6). The rotating shaft (5) rotates through to one side of the base (1). The bidirectional lead screw (6) has a... Two sets of threaded blocks (7) are connected to the outer threaded connection. Connecting rods (8) are hinged to both sides of the two sets of threaded blocks (7). Fixed blocks (9) are hinged to the top of the two sets of connecting rods (8) on the same side. Connecting plates (10) are fixedly installed on the top of the two sets of fixed blocks (9). Fixed shafts (11) are fixedly installed on the top of the connecting plates (10). Fixed shafts (11) slide through to the top of the base (1). Top plates (12) are fixedly installed on the top of the fixed shafts (11). Top plates (12) are slidably disposed inside the base (1).

2. The mold for easy demolding of double-block sleepers according to claim 1, characterized in that, A worm gear (4) is fixedly installed on the outer side of the rotating shaft (5), and two sets of short plates are fixedly installed on one side of the base (1). A worm (3) is rotatably installed inside the two sets of short plates, and the worm gear (4) meshes with the worm (3).

3. The mold for easy demolding of double-block sleepers according to claim 1, characterized in that, The mold body (2) has a cavity (15) inside, and an inlet pipe (16) and an outlet pipe (18) are fixedly installed on the outside of the cavity (15).

4. The mold for easy demolding of double-block sleepers according to claim 2, characterized in that, A motor (14) is fixedly installed on one side of the short plate located at the front, and the output shaft of the motor (14) is fixedly connected to the worm (3).

5. The mold for easy demolding of double-block sleepers according to claim 1, characterized in that, The base (1) has sliding grooves on both sides of its inner wall, and the connecting plate (10) has sliders (13) fixedly installed on both sides. The two sets of sliders (13) are slidably installed in the corresponding sliding grooves.

6. The mold for easy demolding of double-block sleepers according to claim 3, characterized in that, A control valve (17) is provided on the outside of both the inlet pipe (16) and the outlet pipe (18).

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