Polyurethane foaming tooling

Abstract

This application relates to the field of foaming equipment, and in particular to a polyurethane foaming fixture, comprising a base, an active module, a positioning mandrel, a driven module, and a drive device. The end of the positioning mandrel is connected to the surface of the base. The driven module and the active module are slidably connected to the surface of the base at intervals. The drive device includes a mold closing assembly and a mold opening assembly. The mold closing assembly is connected between the active module and the driven module, and the mold opening assembly is connected between the active module, the driven module, and the base. With the mold closing and opening assemblies configured in this application, operators only need to pick up the polyurethane product located on the positioning mandrel, eliminating the need for manual pushing of the active and driven modules. This reduces the labor intensity of operators using the polyurethane foaming fixture, thereby shortening the polyurethane processing cycle and reducing polyurethane production costs.

Description

Technical Field

[0001] This application relates to the field of foaming equipment, and more particularly to a polyurethane foaming fixture. Background Technology

[0002] Polyurethane foaming fixtures refer to equipment that injects raw materials into the cavity of a foaming device for foaming. During the foaming process, the raw materials in the cavity are directly subjected to deformation forces to deform, thereby obtaining products with certain shapes, sizes and properties.

[0003] When polyurethane is being molded in the cavity, workers need to open the equipment to remove the molded polyurethane. Because the equipment is relatively large or heavy, the labor intensity of workers opening the equipment is high, which prolongs the processing cycle of polyurethane and increases the production cost of polyurethane. Utility Model Content

[0004] To address the issue of high production costs for polyurethane, this application provides a polyurethane foaming fixture.

[0005] This application provides a polyurethane foaming fixture, which adopts the following technical solution: A polyurethane foaming fixture includes a base, an active module, a positioning mandrel, a driven module, and a driving device. The end of the positioning mandrel is connected to the surface of the base. The driven module and the active module are slidably connected to the surface of the base at intervals. When both the active module and the driven module slide towards the positioning mandrel, a cavity for foaming is left between the active module, the driven module, and the positioning mandrel. The driving device includes a mold closing assembly and a mold opening assembly. The mold closing assembly is connected between the active module and the driven module and can push both the active module and the driven module to slide towards the positioning mandrel to form a mold closing. The mold opening assembly is connected between the active module, the driven module, and the base and can push the active module and the driven module to slide away from the positioning mandrel to form a mold opening.

[0006] By adopting the above technical solution, when producing polyurethane products, the mold closing assembly pushes both the active and driven modules to slide towards the positioning mandrel. A cavity for foaming is formed between the active module, driven module, and positioning mandrel. Raw material is injected into the cavity, and the raw material in the cavity forms polyurethane products during the foaming process. The mold opening assembly pushes both the active and driven modules to slide away from the positioning mandrel, thus opening the mold. The operator only needs to pick up the polyurethane product located on the positioning mandrel, without the need for the operator to manually push the active and driven modules to slide. This reduces the labor intensity of the operator using the polyurethane foaming tooling, thereby shortening the processing cycle of polyurethane and reducing the production cost of polyurethane.

[0007] Optionally, the mold opening assembly includes an elastic element and a mold opening rod. One end of the mold opening rod is connected to the side of the active module near the driven module. One end of the elastic element in the elastic direction is connected to the end face of the mold opening rod away from the active module. The other end of the elastic element in the elastic direction is connected to the surface of the base away from the driven module. The elastic element has a tendency to elastically drive the active module to slide away from the positioning mandrel.

[0008] By adopting the above technical solution, when the polyurethane product in the cavity is being molded, the pressure effect of the mold closing assembly on the active module and the driven module disappears. The elastic element drives the active module to slide away from the positioning mandrel through the elastic force of the mold opening rod, thereby realizing mold opening. There is no need for the operator to manually push the active module to slide, thus improving the ease of use of the polyurethane foaming tooling.

[0009] Optionally, the mold opening assembly further includes an elastic element two and a mold opening rod two. The end of the mold opening rod two is connected to the side of the driven module near the driving module. One end of the elastic element two in the elastic direction is connected to the end face of the mold opening rod two away from the driven module, and the other end of the elastic element two in the elastic direction is connected to the surface of the base away from the driving module. The elastic element two has the tendency to elastically drive the driven module to slide away from the positioning mandrel.

[0010] By adopting the above technical solution, when the polyurethane product in the cavity is molded, the pressure effect of the mold closing assembly on the active module and the driven module disappears, and the elastic force of the elastic element drives the driven module to slide away from the positioning mandrel, thereby realizing mold opening. There is no need for the staff to manually push the driven module to slide, thus improving the ease of use of polyurethane foaming tooling.

[0011] Optionally, the sliding direction of the active module and the sliding direction of the driven module are parallel to each other. The mold clamping assembly includes a guide rod, a mold clamping plate, a mold clamping bolt, and at least two mold clamping nuts. Both the surface of the active module and the surface of the driven module have guide holes for the guide rod to slide. The axis of the guide hole is parallel to the sliding direction of the active module. The mold clamping plate is connected to the end of the guide rod away from the driven module. The two ends of the guide rod in the axial direction protrude from the surface of the driven module and the mold clamping plate, respectively. At least two mold clamping nuts are threaded and fixed to the two ends of the guide rod in the axial direction, respectively. The surface of the mold clamping plate facing the active module has a threaded hole for the mold clamping bolt to pass through. The axis of the threaded hole is parallel to the sliding direction of the active module. One end of the mold clamping bolt faces the active module, and the other end of the mold clamping bolt is tightened by an automatic screw fastening machine.

[0012] By adopting the above technical solution, when it is necessary to push the active module and the driven module to close the mold, the drive end of the automatic screw fastening machine is embedded in the end of the mold closing bolt and drives the mold closing bolt to rotate. The end face of the mold closing bolt abuts against the surface of the active module and pushes the active module to slide towards the positioning mandrel. The elastic element 1 connected to the active module through the mold opening rod 1 is stretched, and the elastic force of the elastic element 1 increases. The increased elastic force of the elastic element 1 is greater than the undeformed elastic force of the elastic element 2. The elastic force of the elastic element 1 is applied to the mold closing plate surface through the mold opening rod 1, the active module, and the mold closing bolt, while the two mold closing nuts correspond one-to-one. The threads are tightened and fixed at both ends of the guide rod along the axial direction. One mold closing nut surface abuts against the surface of the driven module, and the other mold closing nut surface abuts against the mold closing plate surface. The mold closing plate pushes the driven module to slide towards the positioning mandrel through the guide rod and the mold closing nut. The elastic element two, which is connected to the driven module through the mold opening rod two, is stretched, and the elastic force of the elastic element two increases. The increased elastic force of the elastic element two is equal to the increased elastic force of the elastic element one, so that the active module and the driven module slide towards the positioning mandrel synchronously and close the mold, thereby improving the ease of use of the polyurethane foam tooling.

[0013] Optionally, when the active module, positioning mandrel, and driven module are closed, a feed port is provided between the active module and the driven module, through which the raw material enters the cavity. The assembly also includes a cover assembly, which includes an end cap that can be embedded in the feed port, and an air outlet is provided on the surface of the end cap, which communicates with the cavity.

[0014] By adopting the above technical solution, when both the active module and the driven module slide towards the positioning mandrel, and a cavity is formed between the active module, the driven module, and the positioning mandrel, a feed inlet is formed between the active module and the driven module. The raw material enters the cavity through the feed inlet, achieving stable injection of the raw material into the cavity. At the same time, the end cap is embedded in the feed inlet, and the outer circumference of the end cap abuts against the inner wall of the feed inlet to form a seal. Meanwhile, the gas generated during the foaming process of the raw material in the cavity is discharged from the gas outlet, achieving stable production of polyurethane products.

[0015] Optionally, the mold clamping assembly further includes a cover sliding rail and a cover seat. Both the active module and the driven module have slides on their surfaces for the cover sliding rail to slide. The sliding direction of the cover sliding rail and the sliding direction of the driven module are parallel to each other. The cover seat is connected to the end face of the cover sliding rail away from the active module. The end cap is slidably connected to the surface of the cover seat facing the driven module. The surface of the cover seat away from the driven module is abutted by the cylinder piston rod. When the cylinder piston rod extends, it pushes the cover seat to slide towards the positioning mandrel. The end of the end cap faces the feed port.

[0016] By adopting the above technical solution, when the active module and the driven module slide on the surface of the seat, they drive the cover slide rail to slide on the inner wall of the slide, making it less likely for the active module and the driven module to deviate when sliding on the surface of the seat, thereby improving the stability of the active module and the driven module sliding on the surface of the seat; when it is necessary to cover the feed inlet, the cylinder piston rod extends, the end face of the cylinder piston rod abuts against the surface of the cover seat and pushes the cover seat close to the positioning mandrel, the end of the end cover faces the feed inlet, driving the end cover to slide and embed in the direction close to the feed inlet, thereby achieving directional closure of the feed inlet.

[0017] Optionally, the cover assembly further includes a power bolt and an elastic element three. The surface of the cover seat away from the end cover has a power hole for the power bolt to pass through. One end of the power bolt faces the surface of the end cover, and the other end of the power bolt is turned by an automatic screw-locking machine. One end of the elastic element three in the elastic direction is connected to the surface of the cover seat, and the other end of the elastic element three in the elastic direction is connected to the surface of the end cover. The elastic element three has the elastic force to drive the end cover to slide away from the feed inlet, and the end of the end cover tends to disengage from the feed inlet.

[0018] By adopting the above technical solution, when the raw material is injected into the cavity, the automatic screw fastening machine drives the power bolt to slide along the inner wall of the power hole towards the end cap. The end face of the power bolt abuts against the surface of the end cap and drives the end cap to approach the feed port and embed, thus achieving a stable cover of the end cap on the inner wall of the feed port. When the polyurethane foam is formed in the cavity, the automatic screw fastening machine drives the power bolt to rotate in the opposite direction. The end face of the power bolt disengages from the end cap, and the pressure on the end cap from the power bolt disappears. The elastic element's three elastic forces drive the end cap to slide away from the feed port, and the end cap disengages from the feed port, thus achieving automatic sliding of the end cap without the need for manual control of the end cap sliding by the operator, thereby improving the ease of use of the polyurethane foaming tooling.

[0019] Optionally, a clamping ring is coaxially fixed to the outer peripheral surface of the positioning mandrel near the seat. The surfaces of the active module and the driven module facing the clamping ring are both provided with clamping cavities to accommodate the clamping ring. When the active module, the driven module, and the positioning mandrel are closed, the clamping cavities on the active module and the driven module are spliced ​​together to form an annular cavity and clamp the outer peripheral surface of the clamping ring to form a seal.

[0020] By adopting the above technical solution, when both the active module and the driven module slide towards the positioning mandrel, a cavity is formed between the active module, the driven module and the positioning mandrel. The clamping cavities on the active module and the driven module are spliced ​​together to form an annular cavity and clamp against the outer circumference of the clamping ring to form a seal, so that the raw material can be stably foamed and formed in the cavity, reducing the consumption of raw materials and thus reducing the production cost of polyurethane products.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. With the mold closing and mold opening components set up, the operator only needs to pick up the polyurethane product located on the positioning mandrel. There is no need for the operator to manually push the active and driven modules to slide, which reduces the labor intensity of the operator using the polyurethane foaming tooling, thereby shortening the processing cycle of polyurethane and reducing the production cost of polyurethane. 2. The setting of elastic element one and mold opening rod one enables mold opening without the need for staff to manually push the active module to slide, thereby improving the ease of use of polyurethane foaming tooling; 3. The setting of elastic element two and mold opening rod two: the elastic element two drives the driven module to slide away from the positioning mandrel to open the mold. There is no need for the operator to manually push the driven module to slide, thereby improving the ease of use of polyurethane foam tooling. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the overall structure in the embodiments of this application, mainly showing the second elastic element and the second mold opening rod.

[0024] Explanation of reference numerals in the attached drawings: 1. Base; 2. Active module; 21. Clamping cavity; 22. Cavity; 23. Feed port; 24. Guide hole; 25. Slide rail; 3. Driven module; 4. Positioning mandrel; 5. Drive device; 51. Mold closing assembly; 511. Guide rod; 512. Mold closing plate; 5121. Threaded hole; 513. Mold closing bolt; 514. Mold closing nut; 52. Mold opening assembly; 521. Elastic element one; 522. Elastic element two; 523. Mold opening rod one; 524. Mold opening rod two; 6. Clamping ring; 7. Limiting rod; 9. Cover assembly; 91. Power bolt; 92. Elastic element three; 93. Cover slide rail; 94. Cover seat; 941. Power hole; 95. End cap; 951. Air outlet. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0026] This application discloses a polyurethane foaming fixture. (Refer to...) Figure 1 and Figure 2The polyurethane foaming fixture includes a base 1, an active module 2, a driven module 3, a positioning mandrel 4, a cover assembly 9, and a drive device 5. The base 1 has four rotatable casters at its bottom corners, which roll in contact with the ground. The end of the positioning mandrel 4 is fixed to the end face of the base 1. The axis of the positioning mandrel 4 is parallel to the height direction of the base 1. The active module 2 and the driven module 3 are slidably connected on both sides of the length direction of the base 1. The active module 2 and the driven module 3 are located on both sides of the positioning mandrel 4. The sliding direction of the active module 2 is parallel to the sliding direction of the driven module 3, and the sliding direction of the active module 2 is parallel to the length direction of the base 1.

[0027] Reference Figure 1 and Figure 2 Both sides of the base 1 along its length are fixed with slide rails by bolts. One slide rail is for the active module 2 to slide, and the other slide rail is for the driven module 3 to slide. This makes it less likely for the active module 2 and the driven module 3 to deviate when sliding on the surface of the base 1, thereby improving the stability of the sliding of the active module 2 and the driven module 3. When the active module 2 and the driven module 3 both slide towards the positioning mandrel 4, a cavity 22 for foaming is left between the active module 2, the driven module 3 and the positioning mandrel 4. A feed inlet 23 is left between the active module 2 and the driven module 3. The feed inlet 23 is located on the side of the cavity 22 away from the base 1. The raw material enters the cavity 22 through the feed inlet 23, realizing the stable injection of the raw material into the cavity 22.

[0028] Reference Figure 1 and Figure 2 The positioning mandrel 4 is coaxially and integrally formed with a retaining ring 6 near the outer peripheral surface of the base 1. The surfaces of the active module 2 and the driven module 3 facing the retaining ring 6 are both provided with retaining cavities 21 to accommodate the retaining ring 6. When the active module 2, the driven module 3 and the positioning mandrel 4 are closed, the retaining cavities 21 on the active module 2 and the driven module 3 are spliced ​​to form an annular cavity and press against the outer peripheral surface of the retaining ring 6 to form a seal, so that the raw material in the cavity 22 is not easy to overflow, reducing the consumption of raw materials, thereby reducing the production cost of polyurethane products.

[0029] Reference Figure 1 and Figure 2 The drive device 5 can drive the active module 2 and the driven module 3 to close or open the mold. The drive device 5 includes a mold closing component 51 and a mold opening component 52. The mold closing component 51 can control the active module 2 and the driven module 3 to close the mold, and the mold opening component 52 can control the active module 2 and the driven module 3 to open the mold.

[0030] Reference Figure 1 and Figure 2The mold opening assembly 52 includes an elastic element 1 521, an elastic element 2 522, a mold opening rod 1 523, and a mold opening rod 2 524. The elastic elements 1 521 and 2 522 can be compression springs or tension springs. In this embodiment, the elastic elements 1 521 and 2 522 are tension springs with a certain deformation capacity. One end of the mold opening rod 1 523 is welded and fixed to the surface of the active module 2 near the driven module 3. The other end of the mold opening rod 1 523 is fixed to the elastic element 1 521 by bolts. The end of the elastic element 1 521 with the elastic force direction away from the mold rod 1 523 is fixed to the surface of the base 1 near the active module 2 by bolts. The elastic element 1 521 has the elastic force to drive the active module 2 to slide away from the positioning spindle 4.

[0031] Reference Figure 1 and Figure 2 One end of the mold opening rod 524 is welded and fixed to the surface of the driven module 3 near the active module 2. The other end of the mold opening rod 524 is fixed with an elastic element 522 by bolts. The end of the elastic element 522, whose elastic force direction is far away from the mold rod 524, is fixed with bolts to the surface of the seat 1 near the driven module 3. The elastic element 522 has the tendency to drive the driven module 3 to slide away from the positioning spindle 4.

[0032] Reference Figure 1 and Figure 2 When the raw material in the cavity 22 foams to form a polyurethane product, the pressure of the mold closing assembly 51 on the active module 2 and the driven module 3 disappears. The elastic element 1 521 drives the active module 2 to slide away from the positioning mandrel 4 along the slide rail surface. At the same time, the elastic element 2 522 drives the driven module 3 to slide away from the positioning mandrel 4 along the slide rail surface. This realizes the automatic mold opening of the active module 2 and the driven module 3. The operator only needs to pick up the polyurethane product on the positioning mandrel 4. There is no need for the operator to manually push the active module 2 and the driven module 3 to slide. This reduces the labor intensity of the operator when using the polyurethane foaming tooling, thereby shortening the processing cycle of polyurethane and reducing the production cost of polyurethane.

[0033] Reference Figure 1 and Figure 2The mold clamping assembly 51 includes guide rods 511, mold clamping plates 512, mold clamping bolts 513, and at least two mold clamping nuts 514. The number of guide rods 511 can be one, two, or more. In this embodiment, there are two guide rods 511. Guide holes 24 for sliding of the guide rods 511 are provided on both sides of the active module 2 and the driven module 3 along their length. The axes of the guide holes 24 are parallel to the length direction of the base 1. The ends of the guide rods 511 near the active module 2 are fixed to the surface of the mold clamping plate 512. Both ends of the guide rod 511 protrude from the surface of the driven module 3 and the plate surface of the mold closing template 512 in a corresponding manner. In this embodiment, there are four mold closing nuts 514. Two mold closing nuts 514 form a group. Each group of mold closing nuts 514 corresponds to the guide rod 511. The two mold closing nuts 514 in the same group are screwed and fixed to both ends of the guide rod 511 in a corresponding manner. The end face of one mold closing nut 514 abuts against the surface of the driven module 3, and the surface of the other mold closing nut 514 abuts against the plate surface of the mold closing template 512.

[0034] Reference Figure 1 and Figure 2 The mold plate 512 has a threaded hole 5121 on its surface facing the active module 2 for the mold clamping bolt 513 to pass through. The axis of the threaded hole 5121 is parallel to the length direction of the base 1. The threaded hole 5121 passes through both sides of the mold plate 512 along its own axis. One end of the mold clamping bolt 513 passes through the threaded hole 5121 and abuts against the surface of the active module 2. The other end of the mold clamping bolt 513 is turned by an automatic locking screw machine.

[0035] Reference Figure 1 and Figure 2When the active module 2 and the driven module 3 need to be closed, the drive end of the automatic screw fastening machine is embedded in the end of the mold closing bolt 513 and drives the mold closing bolt 513 to rotate. The end face of the mold closing bolt 513 abuts against the surface of the active module 2 and pushes the active module 2 to slide closer to the positioning mandrel 4. The elastic element 521 connected to the active module 2 through the mold opening rod 523 is stretched, and the elastic force of the elastic element 521 increases. The increased elastic force of the elastic element 521 is greater than the undeformed elastic force of the elastic element 522. The elastic force of the elastic element 521 is applied to the surface of the mold closing plate 512 through the mold opening rod 523, the active module 2, and the mold closing bolt 513, while the two mold closing nuts 514 are tightened one-to-one with their corresponding threads. Fixed at both ends along the axis of the guide rod 511, one mold closing nut 514 abuts against the surface of the driven module 3, and the other mold closing nut 514 abuts against the surface of the mold closing plate 512. The mold closing plate 512 pushes the driven module 3 to slide towards the positioning mandrel 4 through the guide rod 511 and the mold closing nut 514. The elastic element 2 522, which is connected to the driven module 3 through the mold opening rod 2 524, is stretched, and the elastic force of the elastic element 2 522 increases. The increased elastic force of the elastic element 2 522 is equal to the increased elastic force of the elastic element 1 521, so that the active module 2 and the driven module 3 slide towards the positioning mandrel 4 and close the mold synchronously, thereby improving the ease of use of the polyurethane foam tooling.

[0036] Reference Figure 1 and Figure 2 The cover assembly 9 can cover the feed inlet 23. The cover assembly 9 includes an end cap 95, a cover slide rail 93, a cover seat 94, a power bolt 91, and an elastic element 92. The number of cover slide rails 93 can be one, two, or more. In this embodiment, the number of cover slide rails 93 is two. Both ends of the active module 2 and the driven module 3 in the length direction are provided with slideways 25 for the cover slide rails 93 to slide. The sliding direction of the cover slide rails 93 is parallel to the length direction of the seat 1. The ends of the slide rails 93 near the driven module 3 are fixed to the surface of the cover seat 94. The end face of the cover seat 94 away from the driven module 3 is abutted by the end face of the cylinder piston rod. Limiting rods 7 are fixed to the end faces of the two cover slide rails 93 away from the cover seat 94 and facing each other. The cover slide rails 93 are pushed to slide by the limiting rods 7, so as to adjust the distance of the cover seat 94 on the driven module 3. The cover slide rails 93 are not easy to disengage from the slide rail 25, thereby improving the stability of the cover slide rails 93 sliding on the inner wall of the slide rail 25.

[0037] Reference Figure 1 and Figure 2The end cap 95 is slidably connected to the surface of the cover seat 94 facing the driven module 3. The sliding direction of the end cap 95 is parallel to the height direction of the seat 1. The end of the end cap 95 can be embedded in the feed port 23. The outer peripheral surface of the end cap 95 abuts against the inner wall of the feed port 23 to form a seal. The surface of the end cap 95 is provided with an air outlet 951, which is connected to the cavity 22. The air outlet 951 allows the gas generated during the foaming of the raw material in the cavity 22 to be discharged, thereby improving the stability of the foaming of the raw material in the cavity 22.

[0038] Reference Figure 1 and Figure 2 The elastic element 92 can be a compression spring or a tension spring. In this embodiment, the elastic element 92 is a compression spring, which has a certain deformation capability. The surface of the cover seat 94 away from the end cover 95 is provided with a power hole 941 for the power bolt 91 to pass through. The axis of the power hole 941 is parallel to the height direction of the seat body 1. The power hole 941 passes through both sides of the cover seat 94 along its own axis. One end of the power bolt 91 passes through the power hole 941 and faces the surface of the end cover 95. The other end of the power bolt 91 is turned by an automatic screw fastening machine. The number of elastic elements 92 can be one, two or more. In this embodiment, the number of elastic elements 92 is two. One end of the elastic element 92 in the direction of elastic force is connected to the surface of the cover seat 94, and the other end of the elastic element 92 in the direction of elastic force is connected to the surface of the end cover 95. The elastic element 92 has the elastic force to drive the end cover 95 to slide away from the feed port 23, and the end of the end cover 95 tends to detach from the feed port 23.

[0039] Reference Figure 1 and Figure 2 Two elastic elements 92 are located on both sides of the power bolt 91. When the raw material is injected into the cavity 22 through the feed port 23, the automatic screw fastening machine drives the power bolt 91 to rotate and slide along the axis of the power hole 941 towards the end cover 95. The end face of the power bolt 91 abuts against the surface of the end cover 95 and pushes the end cover 95 towards the feed port 23. The end of the end cover 95 is embedded in the feed port 23. The air bubbles generated during the foaming process of the raw material in the cavity 22 are discharged through the air outlet 951. When the raw material in the cavity 22 foams... During molding, the automatic screw fastening machine drives the power bolt 91 to rotate in the opposite direction and slide away from the end cover 95 along the axis of the power hole 941. The end face of the power bolt 91 disengages from the end face of the end cover 95, and the pressure on the end cover 95 from the power bolt 91 disappears. The elastic force of the elastic element 3 92 drives the end cover 95 to slide away from the feed port 23, and the end of the end cover 95 disengages from the feed port 23, realizing the automatic sliding of the end cover 95 without the need for manual control of the end cover 95 by the operator, further improving the ease of use of the polyurethane foaming tooling.

[0040] Reference Figure 1 and Figure 2When the vent on the end cap 95 is blocked by raw materials, the limit rod 7 pushes the cover sliding rail 93 to slide away from the active module 2, and the end cap 95 moves away from the driven module 3. In this embodiment, a cylinder and a ejector pin are provided. The end of the ejector pin is fixed on the piston rod of the cylinder. The piston rod of the cylinder extends out, and the ejector pin is embedded in the vent and pushes out the blockage in the vent, thereby achieving directional cleaning of the inner wall of the vent.

[0041] The implementation principle of a polyurethane foaming fixture according to an embodiment of this application is as follows: An automatic screw-locking machine tightens the mold-closing bolt 513 and drives the mold-closing bolt 513 to slide along the axis of the threaded hole 5121 towards the direction closer to the active module 2. The end face of the mold-closing bolt 513 abuts against the surface of the active module 2 and pushes the active module 2 towards the direction closer to the positioning mandrel 4. The elastic element 521 connected to the active module 2 through the mold-opening rod 523 is stretched, and the elastic force of the elastic element 521 increases. The increased elastic force of the elastic element 521 is greater than the undeformed elastic force of the elastic element 522. The elastic force of the elastic element 521 is applied to the surface of the mold-closing plate 512 through the mold-opening rod 523, the active module 2, and the mold-closing bolt 513. Two mold-closing nuts 514 are threadedly tightened and fixed at both ends of the guide rod 511 along the axial direction. The surface of one mold-closing nut 514 abuts against the surface of the driven module 3, and the surface of the other mold-closing nut 514 abuts against the surface of the mold-closing plate 512. The mold plate 512 pushes the driven module 3 to slide towards the positioning mandrel 4 via the guide rod 511 and the mold closing nut 514. The elastic element 522, which is connected to the driven module 3 via the mold opening rod 524, is stretched, and the elastic force of the elastic element 522 increases. The increased elastic force of the elastic element 522 is equal to the increased elastic force of the elastic element 521. A cavity 22 is formed between the active module 2, the driven module 3, and the positioning mandrel 4. The raw material is injected into the cavity 22 through the feed port 23. The automatic screw fastening machine drives the power bolt 91 to rotate and slide towards the end cover 95 along the axis of the power hole 941. The end face of the power bolt 91 abuts against the surface of the end cover 95 and pushes the end cover 95 towards the feed port 23. The end of the end cover 95 is embedded in the feed port 23. The bubbles generated during the foaming process of the raw material in the cavity 22 are discharged through the air outlet 951. The raw material in the cavity 22 foams to form polyurethane products, realizing the stable production of polyurethane products.When the raw material in cavity 22 foams to form a polyurethane product, the automatic screw fastening machine drives the mold clamping bolt 513 to rotate in the opposite direction. The mold clamping bolt 513 slides away from the active module 2 along the axis of the threaded hole 5121. The pressure of the mold clamping bolt 513 on the active module 2 disappears. The elastic element 1 521 drives the active module 2 to slide away from the positioning mandrel 4 along the slide rail surface. At the same time, the elastic element 2 522 drives the driven module 3 to slide away from the positioning mandrel 4 along the slide rail surface. The automatic screw fastening machine drives the power bolt 91 to rotate in the opposite direction and move away from the end cover 9 along the axis of the power hole 941. Sliding in direction 5, the end face of the power bolt 91 disengages from the end face of the end cover 95. The pressure on the end cover 95 from the power bolt 91 disappears, and the elastic force of the elastic element 3 92 drives the end cover 95 to slide away from the feed inlet 23. The end of the end cover 95 disengages from the feed inlet 23, realizing automatic mold opening of the active module 2 and the driven module 3. The operator only needs to pick up the polyurethane product on the positioning mandrel 4, eliminating the need for manual pushing of the active module 2 and the driven module 3. This reduces the labor intensity of operators using polyurethane foaming tooling, thereby shortening the polyurethane processing cycle and reducing polyurethane production costs.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A polyurethane foaming fixture, characterized in that: The device includes a base (1), an active module (2), a positioning mandrel (4), a driven module (3), and a driving device (5). The end of the positioning mandrel (4) is connected to the surface of the base (1). The driven module (3) and the active module (2) are slidably connected to the surface of the base (1) at intervals. When the active module (2) and the driven module (3) both slide towards the positioning mandrel (4), a cavity (22) for foaming is left between the active module (2), the driven module (3), and the positioning mandrel (4). The driving device (5) includes a combination of components. The mold assembly (51) and the mold opening assembly (52) are provided. The mold closing assembly (51) is connected between the active module (2) and the driven module (3). The mold closing assembly (51) can push the active module (2) and the driven module (3) to slide towards the positioning spindle (4) to form a mold closing. The mold opening assembly (52) is connected between the active module (2), the driven module (3) and the base (1). The mold opening assembly (52) can push the active module (2) and the driven module (3) to slide away from the positioning spindle (4) to form a mold opening.

2. The polyurethane foaming fixture according to claim 1, characterized in that: The mold opening assembly (52) includes an elastic element (521) and a mold opening rod (523). The end of the mold opening rod (523) is connected to the side of the active module (2) near the driven module (3). One end of the elastic element (521) in the elastic direction is connected to the end face of the mold opening rod (523) away from the active module (2). The other end of the elastic element (521) in the elastic direction is connected to the surface of the base (1) away from the driven module (3). The elastic element (521) has a tendency to elastically drive the active module (2) to slide away from the positioning spindle (4).

3. The polyurethane foaming fixture according to claim 2, characterized in that: The mold opening assembly (52) further includes an elastic element two (522) and a mold opening rod two (524). The end of the mold opening rod two (524) is connected to the side of the driven module (3) near the active module (2). One end of the elastic element two (522) in the elastic direction is connected to the end face of the mold opening rod two (524) away from the driven module (3), and the other end of the elastic element two (522) in the elastic direction is connected to the surface of the seat (1) away from the active module (2). The elastic element two (522) has the tendency to elastically drive the driven module (3) to slide away from the positioning spindle (4).

4. The polyurethane foaming fixture according to claim 3, characterized in that: The sliding direction of the active module (2) and the sliding direction of the driven module (3) are parallel to each other. The mold clamping assembly (51) includes a guide rod (511), a mold clamping plate (512), a mold clamping bolt (513), and at least two mold clamping nuts (514). The surfaces of the active module (2) and the driven module (3) are provided with guide holes (24) for the guide rod (511) to slide. The axis of the guide hole (24) is parallel to the sliding direction of the active module (2). The mold clamping plate (512) is connected to the end of the guide rod (511) away from the driven module (3). The two ends of the guide rod (511) in the axial direction protrude one-to-one from the surface of the driven module (3) and the mold clamping plate (514). 12) On the plate, at least two of the mold-closing nuts (514) are threaded and fixed at both ends of the guide rod (511) in the axial direction. The surface of one of the mold-closing nuts (514) abuts against the surface of the driven module (3), and the surface of the other mold-closing nut (514) abuts against the plate surface of the mold-closing template (512). The surface of the mold-closing template (512) facing the active module (2) has a threaded hole (5121) for the mold-closing bolt (513) to pass through. The axis of the threaded hole (5121) and the sliding direction of the active module (2) are parallel to each other. One end of the mold-closing bolt (513) faces the active module (2), and the other end of the mold-closing bolt (513) is turned by an automatic screw fastening machine.

5. The polyurethane foaming fixture according to claim 1, characterized in that: When the active module (2), positioning mandrel (4) and driven module (3) are closed, a feed port (23) is left between the active module (2) and the driven module (3). The raw material enters the cavity (22) through the feed port (23). The mold also includes a cover assembly (9). The cover assembly (9) includes an end cap (95). The end cap (95) can be embedded in the feed port (23), and an air outlet (951) is opened on the surface of the end cap (95). The air outlet (951) is connected to the cavity (22).

6. The polyurethane foaming fixture according to claim 5, characterized in that: The cover assembly (9) also includes a cover slide rail (93) and a cover seat (94). The surfaces of the active module (2) and the driven module (3) are provided with slides (25) for the cover slide rail (93) to slide. The sliding direction of the cover slide rail (93) and the sliding direction of the driven module (3) are parallel to each other. The cover seat (94) is connected to the end face of the cover slide rail (93) away from the active module (2). The end cap (95) is slidably connected to the surface of the cover seat (94) facing the driven module (3). The surface of the cover seat (94) away from the driven module (3) is abutted by the end face of the cylinder piston rod. When the cylinder piston rod extends, it pushes the cover seat (94) to slide towards the positioning spindle (4). The end of the end cap (95) faces the feed port (23).

7. The polyurethane foaming fixture according to claim 6, characterized in that: The cover assembly (9) also includes a power bolt (91) and an elastic element three (92). The surface of the cover seat (94) away from the end cover (95) is provided with a power hole (941) for the power bolt (91) to pass through. One end of the power bolt (91) faces the surface of the end cover (95), and the other end of the power bolt (91) is turned by an automatic screw fastening machine. One end of the elastic element three (92) in the elastic direction is connected to the surface of the cover seat (94), and the other end of the elastic element three (92) in the elastic direction is connected to the surface of the end cover (95). The elastic element three (92) has the elastic force to drive the end cover (95) to slide away from the feed port (23), and the end of the end cover (95) tends to disengage from the feed port (23).

8. The polyurethane foaming fixture according to claim 1, characterized in that: The positioning mandrel (4) is coaxially fixed with a clamping ring (6) near the outer peripheral surface of the seat (1). The surfaces of the active module (2) and the driven module (3) facing the clamping ring (6) are both provided with clamping cavities (21) to accommodate the clamping ring (6). When the active module (2), the driven module (3) and the positioning mandrel (4) are closed, the clamping cavities (21) on the active module (2) and the driven module (3) are spliced ​​to form an annular cavity and clamp the outer peripheral surface of the clamping ring (6) to form a seal.

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