A tie mould spray release agent apparatus

Abstract

The present application relates to a kind of tie mould spray release agent equipment, including rack, spray head, plunger rod, main rolling brush, vice rolling brush, side rolling brush and flow regulating assembly.Plunger rod is vertically slidably arranged on rack, its bottom end is equipped with main rolling brush, and vice rolling brush can be expanded transversely by first elastic member, and both sides are equipped with side rolling brush elastically connected by second elastic member.Transmission part on the top of plunger rod is drivenly connected with linkage needle valve by wedge surface.When plunger rod vertically rises with the fluctuation of the bottom wall of mould induced by main rolling brush, side rolling brush and vice rolling brush are synchronously driven to follow displacement, to adapt to the change that the height of mould slope reduces and the bottom wall widens;Meanwhile, linkage needle valve is driven to adjust the discharge capacity of spray head by transmission part.Dynamic matching of spraying flow and cavity volume is realized, full-surface homogenization is realized by using multi-stage relay rolling brush, manual wiping is replaced, and the problems of medicine waste and sputtering pollution are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of railway sleeper production technology, and more specifically to a railway sleeper mold spraying release agent equipment. Background Technology

[0002] In the existing technology, railway sleepers are cast using metal molds. Before casting, a release agent needs to be sprayed into the mold cavity to ensure that the sleeper can be smoothly removed from the cavity, avoid concrete sticking to the mold, and improve the mold turnover efficiency.

[0003] The process of spraying release agent generally uses truss-type automated spraying equipment to replace the traditional manual brushing process. The platform drives the spray head to sweep along the longitudinal direction of the mold, and combined with a constant pressure liquid supply system, the release agent is automatically covered. However, in actual production conditions, the cavity structure of the sleeper mold is not a regular cuboid, but has a typical inverted trapezoidal cross-section (i.e., the opening width is greater than the bottom width). In order to form the rail support platform and related installation parts of the sleeper, the bottom of the mold is provided with a significantly raised ramp and steps along its longitudinal length.

[0004] In existing constant-pressure automatic spraying systems, when the raised ramp at the bottom of the mold moves below the nozzle, the vertical depth of the cavity decreases. If the nozzle maintains its original constant discharge flow rate at this time, the amount of release agent injected per unit space will be severely overloaded. This not only causes excessive accumulation of release agent and waste of resources, but also, due to the shortened spray distance between the nozzle and the bottom surface of the mold, the high-speed jet generates strong impact and rebound forces, inducing severe droplet splashing. This uncontrolled splashing not only damages the release agent film that has initially formed on the inner wall of the mold, leading to uneven film formation, but also causes a large number of dispersed agent droplets to escape to the outside of the mold, thus contaminating the guide rails, motors, and other precision components of the equipment, significantly increasing the maintenance frequency and cleaning costs.

[0005] The existing method involves manual wiping of the entire line after the spraying process, aiming to remove accumulated liquid at the bottom and even out the film layer on the side walls through manual intervention. This production mode, which relies heavily on manual intervention, not only greatly limits the overall automation cycle of the sleeper production line, but also, due to the uncontrollable nature of the manual wiping force and path, easily leads to localized excessive thickness or peeling of the release agent on the inner wall of the mold. This, in turn, induces common quality defects such as air holes and black spots on the sleeper surface, seriously restricting the consistency and standardization of the surface quality of precast components. Summary of the Invention

[0006] The purpose of this invention is to provide a sleeper mold release agent spraying equipment to solve the technical problems in the prior art, such as the increase of liquid accumulation at the slope and step positions in the mold cavity due to constant spraying, the increase of scouring force, and the uneven film formation caused by release agent splashing, which affects the processing efficiency and product consistency due to reliance on manual wiping for homogenization.

[0007] The technical solution of the sleeper mold spraying release agent equipment of the present invention is as follows:

[0008] A device for spraying release agent onto railway sleeper molds includes:

[0009] A stand; a nozzle, fixed on the stand, for spraying release agent onto the side and bottom walls of a mold being conveyed from front to back;

[0010] It also includes: a plunger rod, which is vertically slidably mounted on the platform and located in front of the spray path of the nozzle;

[0011] The main roller brush is rotatably mounted on the bottom end of the plunger rod, with its rotation axis perpendicular to the conveying direction of the mold. It is used to fit against the bottom wall of the mold and roll relative to the bottom wall of the mold.

[0012] Two auxiliary roller brushes are rotatably mounted on the bottom end of the plunger rod and arranged side by side with the main roller brush. A first elastic element is provided between the two auxiliary roller brushes to drive them to separate and expand in opposite directions along the axial direction of the main roller brush.

[0013] Two side rollers are symmetrically arranged on both sides of the plunger rod along the radial direction of the plunger rod and are elastically connected to the plunger rod by a second elastic element.

[0014] The flow regulating component, mounted on a stand, includes a linkage needle valve and a transmission component fixed to the top of the plunger rod. The linkage needle valve has a flow channel, an inlet and an outlet communicating with the flow channel, and a valve needle that controls the opening of the flow channel. The valve needle is connected to the transmission component. The inlet is connected to the liquid supply pipeline, and the outlet is connected to the nozzle.

[0015] When the plunger rod rises and falls vertically with the main roller brush, it synchronously drives the side roller brush and auxiliary roller brush to move accordingly, and compensates for the reduction in the height of the inclined surface of the mold and the widening of the bottom wall of the roller brush path; and drives the liquid flow of the linkage needle valve through the transmission component.

[0016] Furthermore, the transmission component is a wedge fixed to the top of the plunger rod, which has a first wedge-shaped surface, and the outer end of the valve needle has a second wedge-shaped surface that fits against the first wedge-shaped surface, so that when the plunger rod moves upward, it pushes the valve needle to insert into the flow channel, thereby reducing the flow area of ​​the flow channel.

[0017] Furthermore, an elastic telescopic frame is connected between the side roller brush and the plunger rod, and the side roller brush is rotatably connected to the tail end of the elastic telescopic frame. The second elastic element is disposed inside the elastic telescopic frame to apply an outward expansion force to the side wall roller.

[0018] Furthermore, the elastic telescopic frame includes a fixed sleeve sleeved on the plunger rod, two base sleeves connected to both sides of the fixed sleeve, and two movable rods that are respectively inserted and fitted with the two base sleeves. Two side rollers are respectively fixedly connected to the movable rods, and the second elastic element is mounted between the base sleeves and the movable rods.

[0019] Furthermore, a transverse guide frame is installed at the bottom end of the plunger rod, and two auxiliary roller brushes are slidably disposed on both sides of the transverse guide frame. The second elastic element pushes against the auxiliary roller brushes in the horizontal direction to adapt to the change in the bottom wall width of the mold.

[0020] Furthermore, the auxiliary roller brush is located upstream of the main roller brush, and the transverse guide frame is movably mounted at the bottom of the plunger rod. A third elastic element is mounted between the transverse guide frame and the bottom end of the plunger rod. The third elastic element is used to apply a downward moving force to the transverse guide frame so that when the main roller brush is raised, the height of the auxiliary roller brush is adaptively adjusted to fit the bottom wall of the mold.

[0021] Furthermore, the side roller brush is arranged behind the main roller brush.

[0022] Furthermore, the outer periphery of the side roller brush, main roller brush, and auxiliary roller brush are all covered with a flexible fabric layer, which has a microporous structure for adsorbing and homogenizing the release agent.

[0023] Furthermore, the platform is provided with a vertically arranged guide sleeve, the plunger rod passes through the guide sleeve, and a reset elastic element is provided between the plunger rod and the guide sleeve. The reset elastic element is used to apply a downward moving force to the plunger rod.

[0024] The beneficial effects of this application are as follows: By coordinating the plunger rod and the linkage needle valve through a transmission component, the spray flow rate and cavity volume are matched. Because the plunger rod undergoes vertical displacement due to the undulation of the mold bottom sensed by the main roller brush, this displacement directly maps to the adjustment of the valve needle opening within the flow channel. This automatically reduces the discharge of release agent in sloped and stepped areas where the mold bottom is raised and the cavity depth is shallower. This effectively solves the problem of agent overload caused by traditional constant flow spraying in shallow cavities. It not only avoids the waste of release agent resources but also, by reducing the jet impact kinetic energy, suppresses the outward splashing of agent on the moving platform and surrounding environment, ensuring the cleanliness of equipment operation.

[0025] Furthermore, as the plunger rod rises with the increase in the groove bottom, the expansion force of the first and second elastic elements drives the auxiliary roller brush to dynamically widen laterally to adapt to the widened bottom wall path. Simultaneously, the side roller brush is driven to move accordingly to compensate for the reduction in the effective height of the side wall. This ensures that the roller brush mechanism can maintain a constant clamping force and a fully covered wiping path in the irregular section of the mold, allowing the release agent to be mechanically and forcefully spread and pressed into the micropores of the mold inner wall, forming an extremely uniform and continuous release film layer.

[0026] By employing a relay-style spatial arrangement of main, auxiliary, and side rollers, the mechanical homogenization and stability replaces the intensive manual wiping process. It can intercept and homogenize the chemical flowing onto the slope in real time, solving the problem of liquid accumulation at the bottom corners. Technicians no longer need to perform subsequent manual wiping along the entire line, greatly improving the automation level of the sleeper production line. While ensuring that common quality defects such as air holes and black spots do not occur on the sleeper surface, it significantly reduces the energy consumption and labor costs per sleeper. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a specific embodiment of a sleeper mold spraying release agent device according to the present invention;

[0028] Figure 2 for Figure 1 Left view sectional view;

[0029] Figure 3 for Figure 1 Enlarged view of a portion of point A in the middle;

[0030] Figure 4 for Figure 3 A diagram showing the posture of the brush assembly positioned on a slope.

[0031] Figure 5 for Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0032] Figure 6 for Figure 2 A magnified schematic diagram of the structure at point C in the middle;

[0033] Figure 7 for Figure 2 Top view of the layout of the main and secondary roller brushes;

[0034] Figure 8 for Figure 7 A cross-sectional schematic diagram of the intermediate auxiliary roller brush and the transverse guide frame.

[0035] In the diagram: 1-Mold; 11-Slope; 12-Step; 13-Side wall; 14-Bottom wall; 2-Frame; 21-Guide sleeve; 3-Nozzle; 4-Plunger rod; 41-Transmission component; 411-First wedge surface; 42-Reset elastic component; 5-Linkage needle valve; 51-Flow channel; 52-Inlet; 53-Outlet; 54-Valve needle; 541-Second wedge surface; 6-Elastic telescopic frame; 61-Fixed sleeve; 62-Base sleeve; 63-Moving rod; 64-Second elastic component; 7-Transverse guide frame; 71-First elastic component; 72-Third elastic component; 8-Main roller brush; 9-Secondary roller brush; 10-Side roller brush. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0040] A specific embodiment of the sleeper mold release agent spraying equipment of the present invention: This equipment is mainly used in the automated production line of prestressed concrete sleepers. In this application scenario, the sleeper mold is usually transported longitudinally along the production line as a load-bearing component. Its internal cavity has a typical inverted trapezoidal cross-section feature, and a ramp 11 or step 12 for forming the rail support platform is provided along the longitudinal length direction.

[0041] like Figures 1 to 8 As shown, the equipment includes a frame 2, which spans above the mold conveyor line and serves as a stationary reference, supporting all motion and control components. A guide sleeve 21 is vertically fixed to the frame 2 via welding or high-strength bolts. A plunger rod 4 passes through a guide hole inside the guide sleeve 21, allowing it to slide vertically within the sleeve. To ensure real-time reset capability, a reset elastic element 42 is fitted between the plunger rod 4 and the guide sleeve 21. The reset elastic element 42 is preferably a high-strength compression spring, with one end abutting against the inner end face of the guide sleeve 21 and the other end acting on a shoulder on the plunger rod 4, thereby continuously applying a downward force to the plunger rod 4, ensuring that the bottom part of the plunger rod 4 maintains constant pressure contact with the surface of the mold 1.

[0042] A flow regulation assembly is installed above the test stand 2, which includes a linkage needle valve 5 and a transmission component 41 fixed to the top of the plunger rod 4. The linkage needle valve 5, as a fluid actuator, has a precision flow channel 51 inside. One side of the flow channel 51 has an inlet 52, and the other side has an outlet 53. The inlet 52 is connected to the external liquid supply pipeline and reagent tank through a pressure-bearing hose, and the outlet 53 points directly to and connects to the nozzle 3 below. Inside the linkage needle valve 5, there is a valve needle 54 that controls the opening of the flow channel 51. The axial displacement of the valve needle 54 directly determines the instantaneous flow rate of the nozzle 3. Correspondingly, the transmission component 41 is a wedge. The wedge is machined with a first wedge-shaped surface 411 with a specific slope, and the outer end of the valve needle 54 is correspondingly machined with a second wedge-shaped surface 541 that slides in contact with the first wedge-shaped surface 411, converting the vertical lifting motion of the plunger rod 4 into the horizontal axial movement of the valve needle 54.

[0043] The nozzle 3 is fixed on the stand 2, and its position is at a preset height relative to the conveying path of the mold 1. The release agent mist sprayed downward from the nozzle 3 covers the side wall 13 and bottom wall 14 of the mold 1.

[0044] If the conveying direction of mold 1 is defined as conveying from front to back, then the plunger rod 4 and its mounted homogenizing roller brush group are located in space in front of the spraying path of nozzle 3. Mold 1 is first sprayed by nozzle 3 and then homogenized by roller brush.

[0045] At the bottom end of the plunger rod 4, a roller brush assembly for sensing displacement and performing surface treatment is assembled. A main roller brush 8 is rotatably mounted at its center position, and the axis of rotation of the main roller brush 8 is perpendicular to the conveying direction of the mold 1.

[0046] To accommodate variations in the width of the bottom wall 14 of the mold 1, a transverse guide frame 7 is installed at the bottom end of the plunger rod 4. Two auxiliary roller brushes 9 are mounted on opposite sides of the transverse guide frame 7 via sliding sliders. A first elastic element 71 is transversely assembled between the two auxiliary roller brushes 9. The first elastic element 71 continuously generates an outward elastic force, driving the two auxiliary roller brushes 9 to expand and separate in opposite directions along the axial direction of the main roller brush 8. The auxiliary roller brushes 9 are located in front of the main roller brush 8. Furthermore, to ensure the fit of the auxiliary roller brushes 9 on the ramp 11, the transverse guide frame 7 is movably mounted at the bottom of the plunger rod 4, and a third elastic element 72 is mounted between the transverse guide frame 7 and the bottom end of the plunger rod 4. The third elastic element 72 applies a downward moving force to the transverse guide frame 7, forming an independent vertical buffer space.

[0047] Two side roller brushes 10 are symmetrically arranged radially on the plunger rod 4. The side roller brushes 10 are mounted via an elastic telescopic frame 6. The elastic telescopic frame 6 includes a fixed sleeve 61 fitted onto the plunger rod 4, two symmetrically distributed base sleeves 62, and a movable rod 63 inserted therein. A second elastic element 64 is abutted between the base sleeves 62 and the movable rod 63, providing a continuous outward expansion force. The side roller brushes 10 are arranged behind the main roller brush 8, enabling them to reach areas that the main roller brush 8 cannot reach.

[0048] The outer periphery of the main roller brush 8, the auxiliary roller brush 9 and the side roller brush 10 are covered with a flexible fabric layer. This fabric layer is made of microfiber or high-performance industrial felt and has a microporous structure. It uses capillary action to adsorb release agent droplets and uses rolling pressing action relative to the bottom wall 14 of the mold 1 to homogenize and diffuse the agent.

[0049] When the device is in operation, the moving sleeper mold 1 continuously passes under the platform 2 longitudinally. First, the nozzle 3 sprays a measured amount of release agent onto the inner wall of the cavity according to the current valve needle 54 opening.

[0050] When the bottom of mold 1 is in the straight section of the deep groove, the plunger rod 4 is driven to its lowest position by the reset elastic element 42. At this time, the wedge at the top of the plunger rod 4 is in a low position, the first wedge surface 411 exerts the minimum thrust on the valve needle 54, and the flow channel 51 inside the linkage needle valve 5 is in the maximum open state, ensuring efficient coverage of the deep cavity. At this time, the side roller brush 10 and the auxiliary roller brush 9, under the expansion action of the second elastic element 64 and the first elastic element 71 respectively, shrink to the minimum width that matches the current narrow groove bottom.

[0051] As the mold 1 continues to feed, when the main roller brush 8 contacts the ramp 11 and step 12 at the bottom of the mold 1, the physical height increase of the bottom wall 14 of the mold 1 is directly converted into an upward pushing pressure on the main roller brush 8. This pressure overcomes the resistance of the reset elastic element 42, driving the plunger rod 4 to slide vertically upward. It has the following functions:

[0052] 1. The upward movement of the plunger rod 4 causes the wedge block to rise synchronously. The first wedge-shaped surface 411 of the wedge block, with its increased slope and thickness, forcibly pushes the second wedge-shaped surface 541 of the valve needle 54 and the valve needle 54 as a whole into the linkage needle valve 5. This action mechanically reduces the flow area of ​​the flow channel 51, thereby reducing the liquid flow rate of the nozzle 3. Since the bottom of the mold 1 is raised, the volume and surface area per unit length of the cavity are reduced. This reduction compensation effectively solves the problems of agent accumulation and outward splashing contamination caused by excessive jet energy density, ensuring the dynamic balance of the agent at the slope 11.

[0053] 2. Based on the geometric logic of the inverted trapezoidal mold 1 being "wider at the top and narrower at the bottom," when the plunger rod 4 is raised, the two auxiliary roller brushes 9, originally located at the narrower bottom, automatically slide and expand to both sides along the transverse guide frame 7 under the pushing action of the first elastic element 71. This expansion action precisely compensates for the widening of the bottom wall caused by the rise of the groove bottom, ensuring that the roller brushes always remain close to the edge. At the same time, the side roller brushes 10 located on both sides of the rod body move upward with the plunger rod 4 and, under the continuous expansion action of the second elastic element 64, always elastically abut against the inclined side wall 13. As the side roller brushes 10 move upward with the plunger rod 4, they automatically adapt to the reduced forming height of the side wall 13 due to the rise of the bottom, preventing the homogenizing mechanism from exceeding the edge of the mold 1 or causing mechanical interference in the shallow cavity.

[0054] 3. Through the relay arrangement of the side roller brush 10 and the auxiliary roller brush 9, the side roller brush 10, located downstream of the main roller brush 8, initially flattens the droplets on the slope, while the auxiliary roller brush 9, located upstream or downstream, utilizes its height self-adaptation capability (adjusted by the third elastic element 72) to perform relay cleaning of any gravity-induced dripping residue on the slope. The flexible fabric layer covering the outer periphery of the roller brush releases excess agent when passing through raised areas and adsorbs accumulated liquid in flat areas through its unique microporous adsorption structure, thereby transforming the disordered spray into a controlled, smooth, and dense molecular-level isolation layer.

[0055] In other embodiments, the transmission component 41 may also be a rotary cam or an inclined guide rail fixedly mounted on the top of the plunger rod 4, which drives the valve needle 54 to produce linear reciprocating displacement in the horizontal direction through the profile of the rotary cam or the slope of the guide rail.

[0056] In other embodiments, the second elastic element 64 may also be a torsion spring, a highly elastic rubber block, or a pneumatic support rod with constant output pressure disposed between the plunger rod 4 and the side roller brush 10, so as to continuously provide an expansion force that causes the side roller brush 10 to conform to the slope of the mold 1.

[0057] In other embodiments, the elastic telescopic frame 6 may also employ a scissor-type folding linkage mechanism or a multi-segment nested sleeve structure, and drive the side roller brush 10 to perform lateral spatial telescopic movements through the displacement feedback of the plunger rod 4 or an independent elastic component.

[0058] In other embodiments, the two auxiliary roller brushes 9 may also be installed at the ends of an elastic spline shaft or a multi-stage telescopic slide shaft with automatic telescopic capability, using spring tension to achieve stepless following of the groove bottom width of the mold 1.

[0059] In other embodiments, the side roller brush 10 may also be arranged in front of the main roller brush 8 along the traveling direction of the mold 1, or in the same cross-sectional vertical plane as the main roller brush 8, according to the pilot requirements of the spraying process.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A device for spraying release agent onto railway sleeper molds, comprising: stand; The nozzle, fixed on the stand, is used to spray release agent onto the side and bottom walls of the mold being conveyed from front to back; Its characteristic is that it further includes: The plunger rod is vertically slidably mounted on the platform and located in front of the spray path of the nozzle; The main roller brush is rotatably mounted on the bottom end of the plunger rod, with its rotation axis perpendicular to the conveying direction of the mold. It is used to fit against the bottom wall of the mold and roll relative to the bottom wall of the mold. Two auxiliary roller brushes are rotatably mounted on the bottom end of the plunger rod and arranged side by side with the main roller brush. A first elastic element is provided between the two auxiliary roller brushes to drive them to separate and expand in opposite directions along the axial direction of the main roller brush. Two side rollers are symmetrically arranged on both sides of the plunger rod along the radial direction of the plunger rod and are elastically connected to the plunger rod by a second elastic element. The flow regulating component, mounted on a stand, includes a linkage needle valve and a transmission component fixed to the top of the plunger rod. The linkage needle valve has a flow channel, an inlet and an outlet communicating with the flow channel, and a valve needle that controls the opening of the flow channel. The valve needle is connected to the transmission component. The inlet is connected to the liquid supply pipeline, and the outlet is connected to the nozzle. When the plunger rod rises and falls vertically with the main roller brush, it synchronously drives the side roller brush and auxiliary roller brush to move accordingly, and compensates for the reduction in the height of the inclined surface of the mold and the widening of the bottom wall of the roller brush path; and drives the liquid flow of the linkage needle valve through the transmission component.

2. The equipment for spraying release agent onto railway sleeper molds according to claim 1, characterized in that, The transmission component is a wedge fixed to the top of the plunger rod, which has a first wedge-shaped surface. The outer end of the valve needle has a second wedge-shaped surface that fits against the first wedge-shaped surface, so that when the plunger rod moves upward, it pushes the valve needle to insert into the flow channel, thereby reducing the flow area of ​​the flow channel.

3. The equipment for spraying release agent onto railway sleeper molds according to claim 1, characterized in that, An elastic telescopic frame is connected between the side roller brush and the plunger rod. The side roller brush is rotatably connected to the tail end of the elastic telescopic frame. The second elastic element is disposed inside the elastic telescopic frame to apply an outward expansion force to the side wall roller.

4. The sleeper mold spraying release agent equipment according to claim 3, characterized in that, The elastic telescopic frame includes a fixed sleeve sleeved on the plunger rod, two base sleeves connected to both sides of the fixed sleeve, and two movable rods that are respectively inserted and fitted with the two base sleeves. Two side rollers are respectively fixedly connected to the movable rods, and the second elastic element is mounted between the base sleeves and the movable rods.

5. The equipment for spraying release agent onto railway sleeper molds according to claim 1, characterized in that, A transverse guide frame is installed at the bottom end of the plunger rod, and two auxiliary roller brushes are slidably disposed on both sides of the transverse guide frame. The first elastic element pushes against the auxiliary roller brushes in the horizontal direction to adapt to the change in the bottom wall width of the mold.

6. The equipment for spraying release agent onto railway sleeper molds according to claim 5, characterized in that, The auxiliary roller brush is located upstream of the main roller brush. The transverse guide frame is movably installed at the bottom of the plunger rod. A third elastic element is mounted between the transverse guide frame and the bottom end of the plunger rod. The third elastic element is used to apply a downward moving force to the transverse guide frame so that when the main roller brush is raised, the height of the auxiliary roller brush is adaptively adjusted to fit the bottom wall of the mold.

7. The equipment for spraying release agent onto railway sleeper molds according to claim 1, characterized in that, The side roller brush is arranged behind the main roller brush.

8. The equipment for spraying release agent onto railway sleeper molds according to claim 1, characterized in that, The outer periphery of the side roller brush, main roller brush, and auxiliary roller brush are all covered with a flexible fabric layer, which has a microporous structure for adsorbing and homogenizing release agent.

9. The equipment for spraying release agent onto railway sleeper molds according to claim 1, characterized in that, The platform is provided with a vertically arranged guide sleeve, and the plunger rod passes through the guide sleeve. A reset elastic element is provided between the plunger rod and the guide sleeve, and the reset elastic element is used to apply a downward moving force to the plunger rod.

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