Reinforced polyurethane composite material demolding device

Abstract

The invention relates to the technical field of polyurethane composite material forming, in particular to a reinforced polyurethane composite material demolding device which comprises a supporting table, supporting columns are fixed to the corners of the bottom of the supporting table, cross beams are installed between the supporting columns corresponding to each other left and right, vertical beams are installed between the supporting columns corresponding to each other front and back, and a lower mold is fixed to the top of the supporting table. An upper mold is hinged to the lower mold, a lifting assembly is arranged between the upper mold and the lower mold, a pushing unit used for providing demolding power is arranged at the left end of the lower mold, auxiliary units driven by the pushing unit and matched with demolding are arranged at the bottom of the supporting table in a bilateral symmetry mode, and a connecting assembly is connected between the two auxiliary units. Before the pushing unit pushes and demolds the reinforced polyurethane composite material, the reinforced polyurethane composite material is locally separated from the bottom of the lower mold through the auxiliary unit in advance, so that the pushing force required by demolding of the reinforced polyurethane composite material is reduced, and the reinforced polyurethane composite material is prevented from deforming during demolding.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane composite material molding, in particular to a demoulding device for a reinforced polyurethane composite material. Background Art

[0002] Reinforced polyurethane composite materials are high-performance materials composed of polyurethane matrix and reinforcing materials such as fibers and particles. In the molding and processing technology of reinforced polyurethane composite materials, demoulding is a key link that determines product quality and production efficiency. Since reinforced polyurethane composite materials are prone to adhere to the mold surface during the curing process, improper demoulding may cause scratches on the product surface, structural deformation or even damage, which directly affects the yield and performance. Therefore, a reasonable demoulding method can not only ensure the dimensional accuracy and surface finish of the product, but also extend the mold life and reduce subsequent processing costs.

[0003] In the actual method of molding and demolding the polyurethane composite material, a separate upper mold and lower mold are usually used for molding together. After the molding is completed, the upper mold and the lower mold are controlled to separate. After the upper mold and the lower mold are separated, the molded polyurethane composite material is pushed by a pushing device set on the lower mold, thereby directly completing the demolding.

[0004] Although the above technical solution can be used for demolding relatively soft polyurethane composite materials, when demolding relatively hard reinforced polyurethane composite materials, since the above-mentioned molding demolding equipment adopts a method of directly pushing and demolding the reinforced polyurethane composite materials, it is easy to cause irreversible deformation of the reinforced polyurethane composite materials, thereby affecting the subsequent use of the reinforced polyurethane composite materials; in addition, since the reinforced material is easy to produce a large area of ​​adhesion to the bottom of the lower mold during the curing process, a large area of ​​the reinforced polyurethane composite material may remain on the lower mold during the process of directly pushing the reinforced polyurethane composite material to separate from the lower mold, affecting the surface quality of the reinforced polyurethane composite material. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a demolding device for reinforced polyurethane composite materials, including a support platform, support columns are fixed at the bottom corners of the support platform, a horizontal beam is installed between the corresponding left and right support columns, a vertical beam is installed between the front and rear corresponding support columns, a lower mold is fixed on the top of the support platform, an upper mold is hinged on the lower mold, a lifting component is arranged between the upper mold and the lower mold, a pushing unit for providing demolding power is arranged at the left end of the lower mold, auxiliary units driven by the pushing unit and cooperating with demolding are symmetrically arranged at the bottom of the support platform, and a connecting component is connected between the two auxiliary units; a limiting slide groove is arranged at the left end of the lower mold, and a horizontal moving block is slidably connected to the limiting slide groove; a lifting component is arranged between the upper mold and the lower mold, and a pushing unit is arranged at the left end of the lower mold for providing demolding power; auxiliary units driven by the pushing unit and cooperating with demolding are symmetrically arranged at the bottom of the support platform, and a connecting component is connected between the two auxiliary units; a limiting slide groove is arranged at the left end of the lower mold, and a horizontal moving block is slidably connected to the limiting slide groove; a lifting component is arranged between the upper mold and the lower mold ... The element includes an L-shaped connecting plate fixed on the left side of the lower mold, a horizontal hydraulic cylinder is installed on the right side of the vertical section of the L-shaped connecting plate, a square push block is fixed to the pushing end of the horizontal hydraulic cylinder, and an L-shaped transmission column slidably connected to the horizontal section of the L-shaped connecting plate is fixed at the bottom of the square push block; a transmission element is arranged between the horizontal moving block and the square push block, and a pushing element for demoulding is arranged in the horizontal moving block; the auxiliary unit includes a limiting sleeve fixed between the support platform and the vertical beam, a horizontal column is slidably connected to the limiting sleeve, the horizontal column on the left side is fixedly connected to the right end of the horizontal section of the L-shaped transmission column, a closing component for closing the right end of the lower mold is connected between the horizontal column on the right side and the support platform, and partition elements are arranged at the opposite ends of the two horizontal columns.

[0006] Preferably, the lifting assembly includes an L-shaped fixing plate symmetrically fixed to the top of the upper mold front and back, a vertical hydraulic cylinder is installed at the bottom of the horizontal section of the L-shaped fixing plate, and a pushing section of the vertical hydraulic cylinder is hinged to the side of the lower mold.

[0007] Preferably, the transmission element includes a connecting block fixed on the left side of the horizontal moving block, a square groove is opened in the connecting block, an inner slide is slidably connected in the square groove, a fixed column is fixed on the left end of the inner slide and slides through the connecting block, the fixed column is fixedly connected to the square push block, a connecting groove connected to the square groove is opened in the connecting block, a push plate is connected in the connecting groove through an elastic reset member, and the push plate can drive the pushing element to assist in demolding.

[0008] Preferably, the pushing element includes a U-shaped groove opened on the inner side wall of the horizontal moving block located in the lower mold, the U-shaped groove is communicated with the connecting groove, a limiting plate is fixed on the vertical section of the U-shaped groove, a plurality of vertical rods are penetrated through the limiting plate for sliding up and down, a collecting plate is commonly connected to the bottom of all the vertical rods, a middle plate is fixed on the right side of the collecting plate, and an avoidance structure and a protruding structure are respectively connected between the middle plate and the upper and lower horizontal sections of the U-shaped groove.

[0009] Preferably, the protruding structure includes a wedge block slidably connected to the horizontal section at the lower side of the U-shaped groove, the wedge block is fixedly connected to the pushed plate, a coordination block is fixed at the bottom of the middle plate, and the wedge block pushes the coordination block and shovels the bottom of the polyurethane material.

[0010] Preferably, the closing assembly includes a movable closing plate hinged on the right side of the support platform, and a right opening is opened on the right side of the lower mold; sliding rods are symmetrically fixed to the right end of the right horizontal column, and a rotating plate is connected between each sliding rod and the movable closing plate, and a making way groove for making way for the sliding rod is opened on the rotating plate.

[0011] Preferably, the partition element includes a receiving groove opened between the lower mold and the support table, a plurality of vertical grooves are linearly and evenly opened at the bottom of the receiving groove, an outer sleeve block is fixed to the side of the horizontal column close to the receiving groove, an embedded block is connected to the outer sleeve block for sliding back and forth, a synchronization rod is connected to the middle of the embedded block for sliding up and down at a position corresponding to each vertical groove, a partition plate is fixed to the top of all the synchronization rods, a coordination slope is opened on the side of the receiving groove close to the connecting component, a movable triangular prism is fixed to the position of the partition plate corresponding to the coordination slope; a guide structure and an upward push structure are respectively provided above and below the position of the cross beam corresponding to the outer sleeve block.

[0012] Preferably, the guide structure is used to drive the embedded block to move back and forth, and the guide structure includes a guide block fixed between the cross beam and the support platform, and the embedded block is symmetrically fixed with push blocks in the front and back, and the push blocks slide through the outer sleeve block. Grooves and protrusions are respectively provided on the opposite sides of the two guide blocks and corresponding to the positions of the push blocks, and the protrusions and grooves on the two guide blocks correspond to each other.

[0013] Preferably, the push-up structure includes a track rod fixedly passing through each synchronization rod, rings are fixed on the synchronization rods at the front and rear ends, vertical springs are connected between the rings and the embedded blocks, mounting plates are fixed at the positions of the front and rear beams corresponding to the track rods, and guide rails matching the track rods are fixed on the sides of the mounting plates.

[0014] Preferably, the connecting assembly includes a middle gear rotatably mounted at the bottom of the support platform, and racks are fixed to the sides of the two partition elements close to the middle gear through blocks, and the two racks are meshed with the middle gear.

[0015] The beneficial effects of the present invention are as follows: 1. Before the pushing unit pushes and demolds the reinforced polyurethane composite material, the present invention partially separates the reinforced polyurethane composite material from the bottom of the lower mold through the auxiliary unit in advance, thereby reducing the pushing force required by the pushing unit to push the reinforced polyurethane composite material, and avoiding deformation of the reinforced polyurethane composite material due to a large pushing force.

[0016] 2. The present invention adopts an upward pushing structure to drive the partition plate to gradually push the reinforced polyurethane composite material upward. By gradually increasing the pushing force, it is avoided that the pushed part is deformed due to the inability of the reinforced polyurethane composite material to be quickly separated from the lower mold when being pushed. At the same time, the degree of separation of the reinforced polyurethane composite material and the lower mold can be ensured by gradually increasing the pushing force, and the guide structure can drive the embedded block to move back and forth, thereby making the separation range of the partition plate wider. In addition, the partition plate can be used to separate the reinforced material from the lower mold in view of the large area of ​​adhesion of the reinforced material at the center of the bottom of the lower mold, thereby ensuring the surface quality of the reinforced polyurethane composite material after molding.

[0017] 3. In the present invention, after the partition element separates the reinforced polyurethane composite material and the lower mold to a certain extent, the left end of the reinforced polyurethane composite material is first scooped up by the pushing element, and the scooped part is pushed, so that the reinforced polyurethane composite material is completely separated from the lower mold and the demolding action of the reinforced polyurethane composite material is completed. By this method of first scooping up and then pushing the reinforced polyurethane composite material for demolding, not only can the driving force required to push the reinforced polyurethane composite material to demold as a whole be further reduced, but also the integrity of the reinforced polyurethane composite material during the demolding process can be ensured.

[0018] Fourth, the present invention adopts a wedge-shaped block to shovel the reinforced polyurethane composite material and tilt it upward, and then applies a shear force to the reinforced polyurethane composite material adhered to the front and rear side walls of the lower mold by shoveling and tilting the reinforced polyurethane composite material, so that the reinforced polyurethane composite material adhered to the front and rear side walls of the lower mold is separated from the lower mold, and the pushing force required by the pushing unit to push the reinforced polyurethane composite material to separate from the lower mold is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the first viewing angle structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the local structure of the present invention after the upper mold is cut away.

[0022] Figure 3 It is a partial cross-sectional view of the pushing unit and the lower mold in the present invention.

[0023] Figure 4 yes Figure 3 Partial cross-sectional view along the aa axis.

[0024] Figure 5 It is a schematic diagram of the structure of the second viewing angle of the present invention.

[0025] Figure 6 yes Figure 5 Schematic diagram of the structure at A in the middle.

[0026] Figure 7 It is a partial cross-sectional view of the support platform, the lower mold and the auxiliary unit in the present invention.

[0027] Figure 8 It is a partial cross-sectional view of the auxiliary unit and the support platform in the present invention from an upward perspective.

[0028] In the figure: 1. support platform; 11. support column; 111. crossbeam; 112. vertical beam; 12. connecting assembly; 121. middle gear; 122. rack; 2. lower mold; 21. upper mold; 22. lifting assembly; 221. L-shaped fixed plate; 222. vertical hydraulic cylinder; 23. limit slide; 231. horizontal moving block; 24. closing assembly; 241. movable closing plate; 242. slide bar; 243. rotating plate; 3. pushing unit; 31. L-shaped connecting plate; 311. horizontal hydraulic cylinder; 312. square push block; 313. L-shaped transmission column; 32. transmission element; 321. connecting block; 322. inner slide; 323. fixed column; 324. connecting Through slot; 325, push plate; 33, push element; 331, U-shaped slot; 332, limit plate; 333, vertical rod; 334, assembly plate; 335, median plate; 336, avoidance block; 337, wedge block; 338, coordination block; 4, auxiliary unit; 41, limit sleeve; 411, horizontal column; 42, partition element; 421, accommodating slot; 422, vertical slot; 423, outer sleeve block; 424, embedded block; 425, synchronization rod; 426, partition plate; 427, movable triangular prism; 428, guide block; 429, push block; 430, protruding block; 431, track rod; 432, collar; 433, mounting plate; 434, guide rail. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0030] See also Figure 1 , Figure 2 , Figure 5 and Figure 7A demoulding device for a reinforced polyurethane composite material comprises a support platform 1, support columns 11 are fixed at the bottom corners of the support platform 1, a horizontal beam 111 is installed between the left and right corresponding support columns 11, a vertical beam 112 is installed between the front and rear corresponding support columns 11, a lower mold 2 is fixed on the top of the support platform 1, an upper mold 21 is hinged on the lower mold 2, a lifting component 22 is arranged between the upper mold 21 and the lower mold 2, a pushing unit 3 for providing demoulding power is arranged at the left end of the lower mold 2, auxiliary units 4 driven by the pushing unit 3 and cooperating with demoulding are symmetrically arranged at the bottom of the support platform 1, a connecting component 12 is connected between the two auxiliary units 4, and the connecting component 12 is used to make the two auxiliary units 4 move toward each other.

[0031] The present invention pushes the molded reinforced polyurethane composite material through the pushing unit 3, and pushes the reinforced polyurethane composite material to be separated from the lower mold 2 and the upper mold 21, and drives the auxiliary unit 4 through the pushing unit 3, so that the reinforced polyurethane composite material can be separated from the bottom of the lower mold 2 in advance through the auxiliary unit 4 before the pushing unit 3 pushes the reinforced polyurethane composite material, thereby reducing the driving force required by the pushing unit 3 to push the reinforced polyurethane composite material, and avoiding that when the reinforced polyurethane composite material is pushed by the pushing unit 3, a large driving force causes the reinforced polyurethane composite material to undergo a large deformation.

[0032] Specifically, after the reinforced polyurethane composite material in the upper mold 21 and the lower mold 2 is formed, the lifting component 22 is first controlled to drive the upper mold 21 to rotate, so that the upper mold 21 rotates and separates from the reinforced polyurethane composite material. After the upper mold 21 rotates to a fixed angle, the pushing unit 3 is controlled to push the reinforced polyurethane composite material to the right. Before the pushing unit 3 pushes the reinforced polyurethane composite material, the two auxiliary units 4 will separate the reinforced polyurethane composite material and the lower mold 2 at the bottom of the reinforced polyurethane composite material in advance under the action of the pushing unit 3 and the connecting component 12. After the two are initially separated, the pushing force required by the pushing unit 3 to push and separate the reinforced polyurethane composite material and the lower mold 2 will be greatly reduced, and the pushing unit 3 will be able to separate the reinforced polyurethane composite material from the lower mold 2 more easily. After the separation of the reinforced polyurethane composite material and the lower mold 2 is completed, the reinforced polyurethane composite material is clamped and moved to the right by a movable clamping device preset on the right side of the lower mold 2 until the reinforced polyurethane composite material moves to the right and is completely separated from the lower mold 2.

[0033] It should be noted that during the molding process of the reinforced polyurethane composite material, the reinforced polyurethane composite material needs to be pressurized and heated, so a pressurization and heating module is provided on the top of the upper mold 21, and the pressurization and heating module is widely used in existing reinforced polyurethane composite material molding equipment.

[0034] See also Figure 1The lifting assembly 22 includes an L-shaped fixing plate 221 symmetrically fixed to the top of the upper mold 21, and a vertical hydraulic cylinder 222 is installed at the bottom of the horizontal section of the L-shaped fixing plate 221. The pushing section of the vertical hydraulic cylinder 222 is hinged to the side of the lower mold 2. The lifting assembly 22 is used to push the upper mold 21, so that the upper mold 21 rotates and facilitates the pushing unit 3 to push the polyurethane composite material. Specifically, after the reinforced polyurethane composite material in the upper mold 21 and the lower mold 2 is formed, the front and rear two vertical hydraulic cylinders 222 are first controlled to extend synchronously. During the extension of the vertical hydraulic cylinder 222, the upper mold 21 will rotate with the L-shaped fixing plate 221, so that the upper mold 21 is away from the reinforced polyurethane composite material and separated from it.

[0035] See also Figure 2-Figure 5 A limiting slide groove 23 is provided at the left end of the lower mold 2, and a horizontal moving block 231 is slidably connected to the limiting slide groove 23; the pushing unit 3 includes an L-shaped connecting plate 31 fixed to the left side of the lower mold 2, and a horizontal hydraulic cylinder 311 is installed on the right side of the vertical section of the L-shaped connecting plate 31, and a square pushing block 312 is fixed to the pushing end of the horizontal hydraulic cylinder 311, and an L-shaped transmission column 313 slidably connected to the horizontal section of the L-shaped connecting plate 31 is fixed at the bottom of the square pushing block 312; a transmission element 32 is arranged between the horizontal moving block 231 and the square pushing block 312, and a pushing element 33 is arranged in the horizontal moving block 231, which is driven by the transmission element 32 and pushes the reinforced polyurethane composite material to be demoulded.

[0036] The transmission element 32 includes a connecting block 321 fixed to the left side of the horizontal moving block 231, a square groove is provided in the connecting block 321, an inner slide plate 322 is slidably connected in the square groove, a fixing column 323 is fixed on the left end of the inner slide plate 322 and slides through the connecting block 321, the fixing column 323 is fixedly connected to the square push block 312, a connecting groove 324 connected to the square groove is provided in the connecting block 321, a push plate 325 is connected in the connecting groove 324 through an elastic reset member, the elastic reset member includes an installation groove provided in the connecting block 321, an inner plate is fixed at the position of the push plate 325 corresponding to the installation groove, a reset spring is connected between the inner plate and the installation groove, and the push plate 325 can drive the pushing element 33 to assist in demolding.

[0037] The transmission element 32 in the pushing unit 3 can successively drive the auxiliary unit 4 and the pushing element 33 to separate the reinforced polyurethane composite material from the lower mold 2. By separating the reinforced polyurethane composite material twice in succession, it can not only ensure that the lower mold 2 is quickly separated from the reinforced polyurethane composite material, but also protect the reinforced polyurethane composite material after molding by reducing the pushing force of the pushing unit 3 on the reinforced polyurethane composite material.

[0038] Specifically, when the upper mold 21 is completely away from the reinforced polyurethane composite material, the horizontal hydraulic cylinder 311 is first controlled to drive the square push block 312 to move to the right. During the movement of the square push block 312 to the right, the square push block 312 will first drive the auxiliary unit 4 on the left to move to the right through the L-shaped transmission column 313. As the auxiliary unit 4 on the left moves to the right, the auxiliary unit 4 on the right will move to the left under the action of the connecting component 12, so that the two auxiliary units 4 move toward each other and pre-separate the bottom of the reinforced polyurethane composite material from the lower mold 2.

[0039] When the auxiliary unit 4 has pre-separated the reinforced polyurethane composite material from the lower mold 2 to a certain extent, the inner slide plate 322 will contact the pushed plate 325 and drive the pushed plate 325 to move to the right. At this time, the pushing force applied by the pushed plate 325 to the connecting block 321 and the horizontal moving block 231 through the elastic reset member is very small and insufficient to push the reinforced polyurethane composite material. As the pushed plate 325 moves to the right, the pushing element 33 will pre-shovel the bottom of the left end of the reinforced polyurethane composite material, thereby further ensuring that the bottom of the left end of the reinforced polyurethane composite material is separated from the lower mold 2, and at the same time making the reinforced polyurethane composite material tilt upward, and then by shoveling and tilting the reinforced polyurethane composite material, a shear force is applied to the reinforced polyurethane composite material adhered to the front and rear side walls of the lower mold 2, so that the reinforced polyurethane composite material adhered to the front and rear side walls of the lower mold 2 is separated from the lower mold 2, and the pushing force required by the pushing unit 3 to push the reinforced polyurethane composite material to separate from the lower mold 2 is further reduced.

[0040] See also Figure 1 and Figure 5 The auxiliary unit 4 includes a limiting sleeve 41 fixed between the support platform 1 and the vertical beam 112, and a horizontal column 411 is slidably connected to the limiting sleeve 41. The left horizontal column 411 is fixedly connected to the right end of the horizontal section of the L-shaped transmission column 313, and a closing component 24 for closing the right end of the lower mold 2 is connected between the right horizontal column 411 and the support platform 1. Partition elements 42 are provided at the opposite ends of the two horizontal columns 411, and the partition elements 42 are connected to the connecting component 12.

[0041] The closing assembly 24 includes a movable closing plate 241 hinged on the right side of the support platform 1, and a right opening is opened on the right side of the lower mold 2; a sliding rod 242 is fixed symmetrically at the right end of the right horizontal column 411, and a rotating plate 243 is connected between each sliding rod 242 and the movable closing plate 241, and a making way groove for making way for the sliding rod 242 is opened on the rotating plate 243.

[0042] The partition element 42 can reduce the thrust required by the pushing unit 3 to push the reinforced polyurethane composite material as a whole and completely separate it from the lower mold 2 by pre-separating the bottom of the reinforced polyurethane composite material from the lower mold 2, thereby avoiding deformation of the reinforced polyurethane composite material caused by the large thrust of the horizontal moving block 231 and the pushing element 33. At the same time, the movement of the horizontal column 411 drives the movable sealing plate 241 to rotate, which can automatically make room for the space on the right side of the lower mold 2, thereby ensuring that the reinforced polyurethane composite material can move to the right and separate from the lower mold 2 after being pushed by the pushing element 33.

[0043] Specifically, in the process of the square push block 312 driving the L-shaped transmission column 313 to move to the right, the L-shaped transmission column 313 will drive the left horizontal column 411 to move to the right. In the process of the left horizontal column 411 moving to the right, the left partition element 42 will move to the right and separate the bottom of the reinforced polyurethane composite material from the lower mold 2. At the same time, the right partition element 42 will move to the left under the action of the connecting component 12 and synchronously separate the bottom of the reinforced polyurethane composite material from the lower mold 2. During this process, the right horizontal column 411 will slide to the left along the limit sleeve 41, and the sliding rod 242 at the right end of the horizontal column 411 will drive the movable sealing plate 241 to rotate clockwise through the rotating plate 243, so that the movable sealing plate 241 makes room for the space on the right side of the reinforced polyurethane composite material.

[0044] See also Figure 5 , Figure 7 and Figure 8 The partition element 42 includes a receiving groove 421 opened between the lower mold 2 and the support platform 1, and a plurality of vertical grooves 422 are linearly and evenly opened at the bottom of the receiving groove 421. A sleeve block 423 is fixed to the side of the horizontal column 411 close to the receiving groove 421, and an embedded block 424 is slidably connected to the sleeve block 423. The middle part of the embedded block 424 corresponds to each vertical groove 422 and is slidably connected to the up and down position with a synchronization rod 425, and a partition plate 426 is fixed to the top of all the synchronization rods 425. A coordination slope is opened on the side of the receiving groove 421 close to the connecting component 12, and a movable triangular prism 427 is fixed to the position of the partition plate 426 corresponding to the coordination slope; the position of the crossbeam 111 corresponding to the sleeve block 423 is respectively provided with a guide structure and an upward push structure.

[0045] The connecting assembly 12 includes a middle gear 121 rotatably mounted at the bottom of the support platform 1 . Sides of the two partition elements 42 close to the middle gear 121 are fixed with racks 122 through blocks. Both racks 122 are meshed with the middle gear 121 .

[0046] The guiding structure and the pushing structure can cooperate with the partition plate 426 to separate the bottom of the reinforced polyurethane composite material and the lower mold 2, while improving the effect of the partition plate 426 on separating the bottom of the reinforced polyurethane composite material and the lower mold 2, and through the connecting component 12, the two partition elements 42 can move toward each other, thereby ensuring that the partition element 42 completely separates the bottom of the reinforced polyurethane composite material and the lower mold 2.

[0047] Specifically, when the horizontal column 411 on the left side moves to the right, the horizontal column 411 on the left side will synchronously drive the outer cover block 423 to move to the right. When the outer cover block 423 moves to the right, the push-up structure will drive the partition plate 426 to move upward multiple times through the synchronization rod 425 and push the reinforced polyurethane composite material upward, so that the bottom part of the reinforced polyurethane composite material is separated from the lower mold 2, and when the outer cover block 423 gradually moves to the right, the part of the bottom of the reinforced polyurethane composite material that contacts the partition plate 426 will be gradually separated due to the movement of the partition plate 426. Separated from the lower mold 2, and through the guiding effect of the guide structure, the embedded block 424 will drive the synchronization rod 425 and the partition plate 426 to move back and forth, thereby making the partition range of the partition plate 426 wider and improving the partition effect of the partition plate 426. When the outer sleeve block 423 on the left moves to the right, the square block and the rack 122 on the left will drive the middle gear 121 to rotate, thereby driving the rack 122 on the right to move to the left, and then driving the partition element 42 on the right to move to the left, and the two partition elements 42 can separate the reinforced polyurethane composite material from the lower mold 2 at the same time.

[0048] See also Figure 5-Figure 8 The guide structure includes a guide block 428 fixed between the crossbeam 111 and the support platform 1, and the embedded block 424 is symmetrically fixed with push blocks 429 in the front and rear. The push blocks 429 slide through the outer sleeve block 423. Grooves and protruding blocks 430 are respectively provided on the opposite sides of the two guide blocks 428 and corresponding to the positions of the push blocks 429. The protruding blocks 430 and the grooves on the two guide blocks 428 correspond to each other.

[0049] The push-up structure includes a track rod 431 fixedly passing through each synchronization rod 425, a ring 432 is fixed on the synchronization rod 425 at the front and rear ends, a vertical spring is connected between the ring 432 and the embedded block 424, and a mounting plate 433 is fixed to the position of the front and rear two cross beams 111 corresponding to the track rod 431, and a guide rail 434 matching the track rod 431 is fixed to the side of the mounting plate 433, and the guide rail 434 consists of an ascending section and a plurality of bending sections arranged from left to right. The bending section is closer to the middle gear 121 than the ascending section, and the height of the bending section is higher as it is closer to the middle gear 121.

[0050] The upward pushing structure can drive the partition plate 426 to gradually push the reinforced polyurethane composite material upward, gradually increase the pushing force, prevent the initial pushing force on the reinforced polyurethane composite material from being too large, and thereby avoid the reinforced polyurethane composite material being unable to be quickly separated from the lower mold 2 when pushed, causing the pushed part to deform. At the same time, the degree of separation of the reinforced polyurethane composite material from the lower mold 2 is ensured by gradually increasing the pushing force, and the guide structure can drive the embedded block 424 to move back and forth, so that the separation range of the partition plate 426 is wider.

[0051] Specifically, when the left outer sleeve block 423 moves to the right, the track rod 431 will first move upward along the rising section of the guide rail 434, and cooperate with the movable triangular prism 427 on the matching slope and the partition plate 426 to make the partition plate 426 move upward steadily, so that the partition plate 426 at this time changes from a state of closing the receiving groove 421 to a state of separating the reinforced polyurethane composite material and the lower mold 2, and then the track rod 431 will gradually drive the synchronization rod 425 and the partition plate 426 upward along the bending section of the guide rail 434 to The reinforced polyurethane composite material is pushed, and in this process, the pushed block 429 is affected by the cooperation of the groove and the raised block 430, so that the embedded block 424 moves back and forth, and then the partition plate 426 is synchronously driven to move back and forth through the synchronization rod 425. At this time, the partition plate 426 is located above the accommodating groove 421, so the accommodating groove 421 does not block the forward and backward movement of the partition plate 426, so that the partition plate 426 moves back and forth in the process of moving to the right, and pushes the reinforced polyurethane composite material with a gradually increasing driving force.

[0052] See also Figure 2-Figure 4 The pushing element 33 includes a U-shaped groove 331 opened on the horizontal moving block 231 and located on the inner side wall of the lower mold 2. The U-shaped groove 331 is communicated with the connecting groove 324. A limiting plate 332 is fixed to the vertical section of the U-shaped groove 331. A plurality of vertical rods 333 slide up and down through the limiting plate 332. A collecting plate 334 is commonly connected to the bottom of all the vertical rods 333. A middle plate 335 is fixed to the right side of the collecting plate 334. An avoidance structure and a protruding structure are respectively connected between the middle plate 335 and the upper and lower horizontal sections of the U-shaped groove 331.

[0053] The protruding structure includes a wedge block 337 slidably connected to the horizontal section at the lower side of the U-shaped groove 331 . The wedge block 337 is fixedly connected to the thrust plate 325 . A coordination block 338 is fixedly provided at the bottom of the middle plate 335 .

[0054] In this embodiment, if Figure 3 and Figure 4As shown, the avoidance structure includes a circular hole symmetrically opened between the horizontal moving block 231 and the connecting block 321, and a horizontal rod is connected to the circular hole through an internal spring. The right ends of the two horizontal rods are jointly fixed with an avoidance block 336, and the bottom of the avoidance block 336 and the top of the middle plate 335 are both provided with a matching inclined surface.

[0055] The pushing element 33 is used to scoop up the left end of the reinforced polyurethane composite material and push the scooped part after the partition element 42 separates the reinforced polyurethane composite material and the lower mold 2 to a certain extent, so that the reinforced polyurethane composite material is completely separated from the lower mold 2 and the demolding of the reinforced polyurethane composite material is completed. By scooping up first and then pushing the reinforced polyurethane composite material for demolding, not only can the driving force required to demold the entire reinforced polyurethane composite material be further reduced, but also the integrity of the reinforced polyurethane composite material during the demolding process can be ensured.

[0056] Specifically, after the push plate 325 moves to the right, the push plate 325 will synchronously drive the wedge block 337, and the wedge block 337 will push the coordination block 338 upward, thereby driving the coordination block 338 and the middle plate 335 to move upward together. After the middle plate 335 moves upward, the middle plate 335 will drive the avoidance block 336 to move to the left through the matching inclined surface on the top, so that the middle plate 335 has enough space to move upward and cooperate with the avoidance block 336 to close the left side of the lower mold 2, ensuring the flatness of the surface of the reinforced polyurethane composite material after the molding is completed. After pushing the coordination block 338 and the median plate 335 and extending them to the right, the wedge block 337 will contact the bottom of the reinforced polyurethane composite material until the wedge block 337 scoops up the left end of the reinforced polyurethane composite material, and then the inner slide plate 322 will change from pushing the pushed plate 325 to pushing the entire connecting block 321, thereby cooperating with the connecting block 321 and the horizontal moving block 231 to push the left end of the reinforced polyurethane composite material, and then push the reinforced polyurethane composite material through the horizontal moving block 231 and separate it from the lower mold 2 until the reinforced polyurethane composite material moves to a certain distance to the right side of the lower mold 2.

[0057] See also Figure 1-Figure 8 The working steps of the present invention are as follows: In the first step, after the reinforced polyurethane composite material is formed in the upper mold 21 and the lower mold 2, the front and rear two vertical hydraulic cylinders 222 are synchronously controlled to extend. During this process, the upper mold 21 will rotate with the L-shaped fixed plate 221, thereby separating from the reinforced polyurethane composite material until the upper mold 21 is completely away from the reinforced polyurethane composite material.

[0058] In the second step, when the upper mold 21 is completely away from the reinforced polyurethane composite material, the horizontal hydraulic cylinder 311 is controlled to drive the square push block 312 to move rightward. The square push block 312 first drives the L-shaped transmission column 313 to move the left auxiliary unit 4 to the right, and the right auxiliary unit 4 moves to the left under the action of the connecting component 12. The two move toward each other to pre-separate the bottom of the reinforced polyurethane composite material from the lower mold 2. In this process, the partition plate 426 is driven by the push-up structure and the synchronous rod 425 to push the reinforced polyurethane composite material upward for many times, so that the bottom of the reinforced polyurethane composite material is partially separated from the lower mold 2, and the partition plate 426 moves back and forth under the action of the guide structure to increase the separation range.

[0059] In the third step, when the auxiliary unit 4 pre-separates the reinforced polyurethane composite material from the lower mold 2 to a certain extent, the square push block 312 will contact the pushed plate 325 and drive it to move to the right. At this time, the pushed plate 325 will drive the wedge block 337 to move to the right, and the wedge block 337 will push the coordination block 338 and the median plate 335 to move upward, and then the median plate 335 drives the avoidance block 336 to avoid to the left, and then the wedge block 337 contacts the bottom of the reinforced polyurethane composite material and shovels up its left end.

[0060] In the fourth step, after the wedge block 337 scoops up the left end of the reinforced polyurethane composite material, the inner slide plate 322 will push the connecting block 321 and the horizontal moving block 231, thereby pushing the left end of the reinforced polyurethane composite material through the horizontal moving block 231 and the connecting block 321 and separating it from the lower mold 2 until the reinforced polyurethane composite material is pushed to a certain distance to the right side of the lower mold 2.

[0061] In the fifth step, after the separation of the reinforced polyurethane composite material from the lower mold 2 is completed, the reinforced polyurethane composite material is clamped and moved to the right by a movable clamping device preset on the right side of the lower mold 2 until the reinforced polyurethane composite material is completely separated from the lower mold 2.

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A demoulding device for a reinforced polyurethane composite material, comprising a support platform, support columns are fixed at the bottom corners of the support platform, a horizontal beam is installed between the left and right corresponding support columns, a vertical beam is installed between the front and rear corresponding support columns, a lower mold is fixed on the top of the support platform, and an upper mold is hinged on the lower mold, characterized in that: A lifting assembly is arranged between the upper mold and the lower mold, a pushing unit for providing demoulding power is arranged at the left end of the lower mold, auxiliary units driven by the pushing unit and cooperating with demoulding are arranged symmetrically at the bottom of the support platform, and a connecting assembly is connected between the two auxiliary units; The left end of the lower mold is provided with a limited sliding groove, and a horizontal moving block is slidably connected to the limited sliding groove; the pushing unit includes an L-shaped connecting plate fixed on the left side of the lower mold, a horizontal hydraulic cylinder is installed on the right side of the vertical section of the L-shaped connecting plate, a square pushing block is fixed to the pushing end of the horizontal hydraulic cylinder, and an L-shaped transmission column slidably connected to the horizontal section of the L-shaped connecting plate is fixed to the bottom of the square pushing block; a transmission element is arranged between the horizontal moving block and the square pushing block, and a pushing element for demoulding is arranged in the horizontal moving block; The auxiliary unit includes a limit sleeve fixed between the support platform and the vertical beam, and a horizontal column is slidably connected to the limit sleeve. The horizontal column on the left is fixedly connected to the right end of the horizontal section of the L-shaped transmission column, and a closing component for closing the right end of the lower mold is connected between the horizontal column on the right and the support platform. Partition elements are provided at the opposite ends of the two horizontal columns.

2. A demoulding device for reinforced polyurethane composite material according to claim 1, characterized in that: The lifting assembly includes an L-shaped fixing plate symmetrically fixed to the top of the upper mold, a vertical hydraulic cylinder is installed at the bottom of the horizontal section of the L-shaped fixing plate, and a pushing section of the vertical hydraulic cylinder is hinged to the side of the lower mold.

3. A demoulding device for reinforced polyurethane composite material according to claim 1, characterized in that: The transmission element includes a connecting block fixed on the left side of the horizontal moving block, a square groove is opened in the connecting block, an inner slide is slidably connected in the square groove, a fixed column is fixed on the left end of the inner slide and slides through the connecting block, the fixed column is fixedly connected to the square push block, a connecting groove connected to the square groove is opened in the connecting block, a push plate is connected in the connecting groove through an elastic reset member, and the push plate can drive the pushing element to assist in demolding.

4. A demoulding device for reinforced polyurethane composite material according to claim 3, characterized in that: The pushing element includes a U-shaped groove opened on the inner side wall of the horizontal moving block located at the lower mold, the U-shaped groove is communicated with the connecting groove, a limit plate is fixed on the vertical section of the U-shaped groove, a plurality of vertical rods slide up and down through the limit plate, a collecting plate is connected to the bottom of all the vertical rods, a middle plate is fixed on the right side of the collecting plate, and an avoidance structure and a protruding structure are respectively connected between the middle plate and the upper and lower horizontal sections of the U-shaped groove.

5. A demoulding device for reinforced polyurethane composite material according to claim 4, characterized in that: The protruding structure includes a wedge block that is slidably connected to the horizontal section at the lower side of the U-shaped groove. The wedge block is fixedly connected to the pushed plate. A coordination block is fixed at the bottom of the middle plate. The wedge block pushes the coordination block and shovels the bottom of the polyurethane material.

6. A demoulding device for reinforced polyurethane composite material according to claim 1, characterized in that: The closing assembly includes a movable closing plate hinged on the right side of the support platform, and a right opening is opened on the right side of the lower mold; sliding rods are symmetrically fixed to the right end of the right horizontal column, and a rotating plate is connected between each sliding rod and the movable closing plate, and a giving way groove is opened on the rotating plate to give way to the sliding rods.

7. A demoulding device for reinforced polyurethane composite material according to claim 1, characterized in that: The partition element includes a receiving groove opened between the lower mold and the support platform, and a plurality of vertical grooves are linearly and evenly opened at the bottom of the receiving groove; an outer sleeve block is fixed to the side of the horizontal column close to the receiving groove, and an embedded block is connected to the outer sleeve block for forward and backward sliding; a synchronous rod is connected to the middle of the embedded block for upward and downward sliding corresponding to each vertical groove, and a partition plate is fixed to the top of all the synchronous rods; a coordination slope is opened on the side of the receiving groove close to the connecting component, and a movable triangular prism is fixed to the position of the partition plate corresponding to the coordination slope; a guide structure and an upward push structure are respectively provided above and below the position of the cross beam corresponding to the outer sleeve block.

8. A demoulding device for reinforced polyurethane composite material according to claim 7, characterized in that: The guide structure is used to drive the embedded block to move back and forth. The guide structure includes a guide block fixed between the crossbeam and the support platform. The embedded block is symmetrically fixed with push blocks in the front and back. The push blocks slide through the outer sleeve block. Grooves and protrusions are respectively provided on the opposite sides of the two guide blocks and corresponding to the positions of the push blocks. The protrusions and grooves on the two guide blocks correspond to each other.

9. A demoulding device for reinforced polyurethane composite material according to claim 7, characterized in that: The push-up structure includes a track rod fixedly passing through each synchronization rod, a ring fixed on the synchronization rods at the front and rear ends, a vertical spring connected between the ring and the embedded block, a mounting plate fixed at the positions of the front and rear beams corresponding to the track rods, and a guide rail matching the track rod is fixed on the side of the mounting plate.

10. The demoulding device of a reinforced polyurethane composite material according to claim 1, characterized in that: The connecting assembly comprises a middle gear rotatably mounted at the bottom of the support platform, and racks are fixed to the sides of the two separating elements close to the middle gear through blocks, and the two racks are meshed with the middle gear.

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