Hard foam foaming mold

Abstract

The utility model belongs to the technical field of rigid polyurethane foaming, and discloses a rigid foam foaming mold, which relates to the field and comprises a bottom plate, a support extending to the upper part is fixed on the inner wall of the bottom plate, and a mold assembly is fixed at the top end of the support; the mold assembly comprises a mold base assembled at the top end of the support, a mold cover covering the top of the mold base is rotatably arranged on the rear surface of the mold base, side plates are rotatably arranged at the two ends of the mold base, a stress strip is slidably arranged on the front surface of the mold base, and two sets of stroke grooves are fixed to the top of the stress strip. The top end of the stroke groove is sleeved with a connecting piece fixed to the front surface of the mold cover. Through the arrangement of the stress strip, the locking effect of the mold cover and the side plate can be synchronously controlled, a worker can take out a foamed product from the side edge more conveniently, the demolding efficiency is improved while the workload of the worker is reduced, the foamed product can be taken out smoothly and stably in the demolding process in cooperation with the inclinable mold base, and clamping stagnation or damage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rigid polyurethane foam technology, and in particular to a rigid foam foaming mold. Background Technology

[0002] Rigid polyurethane foam, or simply rigid polyurethane foam, is the second most widely used polyurethane product after flexible polyurethane foam. Rigid polyurethane foam is mostly closed-cell, possessing excellent properties such as good thermal insulation, light weight, high specific strength, and easy construction. It also features sound insulation, shock absorption, electrical insulation, heat resistance, cold resistance, and solvent resistance. It is widely used in the insulation layers of refrigerators and freezers, cold storage facilities, refrigerated trucks, and other insulation materials, as well as in building, storage tank, and pipeline insulation materials. A smaller amount is used in non-insulation applications, such as wood-look and packaging materials. During the production of polyurethane foam, foaming molds are used to shape it into the desired form.

[0003] The existing technology for rigid polyurethane foam molding molds is the old-fashioned horizontal mold. The sealing of the mold requires manual control of multiple buckles one by one. When removing the foamed product, multiple buckles also need to be opened, which makes the manual operation steps cumbersome and may even increase human fatigue and lead to low efficiency. Therefore, a rigid foam molding mold is proposed. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model proposes a rigid foam molding die that can quickly open or close the mold base, making the process simple and convenient.

[0005] This utility model provides a rigid foaming mold, including a base plate, an upper support fixed to the inner wall of the base plate, and a mold assembly fixed to the top of the support.

[0006] The mold assembly includes a mold base mounted on the top of a support. A mold cover is rotatably provided on the rear surface of the mold base and covers the top of the mold base. Side plates are rotatably provided at both ends of the mold base. A force-bearing strip is slidably provided on the front surface of the mold base. Two sets of insert rods are fixed on the top of the force-bearing strip. A connector is sleeved on the top of the insert rod and fixed to the front surface of the mold cover. A base column extending into the force-bearing strip is provided on the front surface of the side plate. A constraint groove is provided at the contact position between the force-bearing strip and the base column.

[0007] According to some embodiments of the present invention, a U-shaped platform is rotatably provided inside the bracket and near the top position. The top of the U-shaped platform is fixed to the bottom of the mold base. A gear plate is fixed inside the U-shaped platform. A locking block is engaged below the gear plate. A traction rod is fixed to the bottom of the locking block. A pedal is provided at the bottom of the traction rod and rotatably connected to the top of the base plate.

[0008] According to some embodiments of the present invention, a constant temperature chamber is assembled on the top side of the base plate, and the side of the constant temperature chamber is provided with a pipe that communicates with the mold base and the mold cover.

[0009] According to some embodiments of the present invention, the top of the mold cover is fixed with two sets of handles, and the ends of the handles extend to the front side of the mold cover.

[0010] According to some embodiments of the present invention, the rear surface of the force-bearing strip is provided with a dovetail block extending into the mold base, the mold base is provided with a stroke groove at the contact position with the dovetail block, and the upper and lower parts of the dovetail block are provided with a return spring fixed to the stroke groove.

[0011] According to some embodiments of this utility model, a constraint frame is sleeved on the bottom outer wall of the card block, the outer wall of the constraint frame is fixed to the inner wall of the bracket, and a telescopic spring is fixed inside the constraint frame, the telescopic spring being sleeved on the outer wall of the traction rod.

[0012] According to some embodiments of the present invention, the top of the card block is aligned with the teeth that have grooves on the outer wall of the toothed disc.

[0013] In summary, the present invention has the following main advantages:

[0014] This utility model, through the setting of the force strip, can simultaneously control the locking effect of the mold cover and the side plate, making it more convenient for manual removal of foamed products from the side, reducing the workload of manual labor and improving the demolding efficiency. In addition, with the tiltable mold base, the demolding process is smooth and stable, avoiding jamming or damage. Attached Figure Description

[0015] Figure 1 This is a first-view structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional view of the mold assembly of this utility model;

[0017] Figure 3 This is a front sectional view of the mold assembly of this utility model;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is a second-view structural diagram of the present invention;

[0020] Figure 6 This is a cross-sectional plan view of the bracket according to the first embodiment of this utility model;

[0021] Figure 7 This is a cross-sectional plan view of the bracket according to the first embodiment of this utility model.

[0022] 100. Base plate;

[0023] 110. Constant temperature chamber; 120. Bracket; 121. Pedal; 122. Traction rod; 123. U-shaped platform; 124. Gear plate; 125. Constraint frame; 126. Locking block; 127. Electric push rod; 130. Mold assembly; 131. Mold base; 132. Mold cover; 133. Connector; 134. Side plate; 1341. Base column; 135. Force-bearing strip; 1351. Constraint groove; 136. Insert rod; 137. Dovetail block; 138. Return spring. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installing", "connecting", "linking", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0028] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments: Example 1

[0029] like Figures 1 to 6 A rigid foam molding die is shown, including a base plate 100, a support 120 extending upward is fixed to the inner wall of the base plate 100, and a mold assembly 130 is fixed to the top of the support 120.

[0030] The mold assembly 130 includes a mold base 131 mounted on the top of the bracket 120. A mold cover 132 is rotatably provided on the rear surface of the mold base 131 and covers the top of the mold base 131. Side plates 134 are rotatably provided at both ends of the mold base 131. A force-bearing strip 135 is slidably provided on the front surface of the mold base 131. Two sets of insert rods 136 are fixed on the top of the force-bearing strip 135. A connector 133 is sleeved on the top of the insert rod 136 and fixed to the front surface of the mold cover 132. A base column 1341 extending into the force-bearing strip 135 is provided on the front surface of the side plate 134. A constraint groove 1351 is provided at the contact position between the force-bearing strip 135 and the base column 1341.

[0031] The mold base 131 and the mold cover 132 are both covered with anti-stick film on the side that contacts the foamed product.

[0032] When the mold cover 132 is opened, a downward force is applied to the force bar 135, and the two sets of insert rods 136 at the top of it are lowered simultaneously and will separate from the connector 133. At this time, the locking of the mold cover 132 has been released, and the mold cover 132 can be opened manually to remove the product. While the force bar 135 moves down, the constraint groove 1351 will generate an external force on the base column 1341 away from the mold base 131. When the force bar 135 is lowered to the lowest point, the base column 1341 is no longer bound by the constraint groove 1351. At this time, the side plate 134 is in a slightly open state, and under its own weight, the side plate 134 will open automatically without manual opening. At this time, the demolding step can be performed directly, which can improve the preparation efficiency of foamed products.

[0033] Conversely, when the side plate 134 is closed, it can be directly moved closer to the mold base 131. The base column 1341 can lift the force strip 135. When the side plate 134 is completely in contact with the mold base 131, the base column 1341 and the constraint groove 1351 are aligned. At this time, the force strip 135 can automatically lower and lock the side plate 134, so that the next foaming operation can be carried out conveniently.

[0034] Please refer to this carefully. Figure 5 and Figure 6 A U-shaped platform 123 is rotatably provided inside the bracket 120 and near the top. The top of the U-shaped platform 123 is fixed to the bottom of the mold base 131. A gear plate 124 is fixed inside the U-shaped platform 123. A locking block 126 is engaged below the gear plate 124. A traction rod 122 is fixed to the bottom of the locking block 126. A pedal 121 is provided at the bottom of the traction rod 122 and rotatably connected to the top of the base plate 100.

[0035] A constraint frame 125 is sleeved on the bottom outer wall of the locking block 126. The outer wall of the constraint frame 125 is fixed to the inner wall of the bracket 120. A telescopic spring is fixed inside the constraint frame 125. The telescopic spring is sleeved on the outer wall of the traction rod 122. The top of the locking block 126 is connected to the teeth of the toothed disc 124 with the toothed groove on the outer wall of the toothed disc 124.

[0036] When an operator applies external force to the pedal 121 with their foot, one end of the pedal 121 rotates downwards, causing the traction rod 122 to move downwards. Then, the top locking block 126 separates from the gear plate 124. At this time, an operator can apply external force to one end of the mold assembly 130, causing its U-shaped platform 123 to rotate around the connection point with the bracket 120. This allows the mold assembly 130 to be tilted, ensuring smooth and stable removal during demolding and avoiding jamming or damage. Conversely, the mold assembly 130 can be rotated to a horizontal position, allowing the foaming operation to continue.

[0037] Please refer to this carefully. Figure 2 A constant temperature chamber 110 is installed on the top side of the base plate 100. The side of the constant temperature chamber 110 is provided with a pipe that connects to the mold base 131 and the mold cover 132. Temperature display panels are installed on the top of the mold base 131 and the bottom of the mold cover 132.

[0038] With the help of two sets of temperature display panels, the mold cover 132 and the mold base 131 can maintain a constant temperature, ensuring stable foaming of rigid polyurethane foam and improving the quality of rigid polyurethane foam.

[0039] Please refer to this carefully. Figure 1 , Figure 2 and Figure 5 Two sets of handles are fixed to the top of the mold cover 132, and the ends of the handles extend to the front side of the mold cover 132.

[0040] The handle allows for easy manual application of external force to the mold cover 132, causing it to rotate and open for manual operation inside the mold base 131.

[0041] Please refer to this carefully. Figure 3 The rear surface of the force bar 135 is provided with a dovetail block 137 extending into the mold base 131. A stroke groove is provided at the contact position between the mold base 131 and the dovetail block 137. The upper and lower parts of the dovetail block 137 are provided with return springs 138 fixed to the stroke groove.

[0042] The dovetail block 137 is used to make the force bar 135 rise and fall linearly on the front surface of the mold base 131, and at the same time, the return spring 138 makes the force bar 135 automatically return to its original position.

[0043] When in use, when the mold cover 132 is opened, a downward force is applied to the force bar 135. The two sets of insert rods 136 at the top of the bar are lowered simultaneously and will separate from the connector 133. At this time, the locking of the mold cover 132 has been released, and the mold cover 132 can be manually opened to remove the product. While the force bar 135 is lowered, the constraint groove 1351 will exert an external force on the base column 1341 away from the mold base 131. When the force bar 135 is lowered to the lowest point, the base column 1341 is no longer bound by the constraint groove 1351. At this time, the side plate 134 is in a slightly open state, and under its own weight, the side plate 134 will automatically open without manual opening. At this time, the demolding step can be performed directly, which can improve the preparation efficiency of foamed products.

[0044] Conversely, when the side plate 134 is closed, it can be directly moved closer to the mold base 131. The base column 1341 can lift the force strip 135. When the side plate 134 is completely in contact with the mold base 131, the base column 1341 and the constraint groove 1351 are aligned. At this time, the force strip 135 can automatically lower and lock the side plate 134, so that the next foaming operation can be carried out conveniently. The parts not involved in this device are the same as the existing technology or can be implemented by the existing technology. Example 2

[0045] Please refer to the following for details regarding the differences between this embodiment and Embodiment 1. Figure 7 The bottom of the traction rod 122 is equipped with an electric push rod 127 mounted on the top of the mounting base plate 100, and the front outer wall of the bracket 120 is equipped with a control panel for controlling the start and stop of the electric push rod 127.

[0046] The output end of the electric push rod 127 is raised or lowered, thereby driving the traction rod 122 to move synchronously. This allows the upper gear plate 124 to be locked or unlocked. It is worth noting that the electric push rod 127 can be used interchangeably with the pedal 121.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rigid foam molding die, comprising a base plate (100), characterized in that: The inner wall of the base plate (100) is fixed with a support (120) extending upward, and the top of the support (120) is fixed with a mold assembly (130). The mold assembly (130) includes a mold base (131) mounted on the top of the bracket (120). The rear surface of the mold base (131) is rotatably provided with a mold cover (132) covering the top of the mold base (131). Side plates (134) are rotatably provided at both ends of the mold base (131). A force-bearing strip (135) is slidably provided on the front surface of the mold base (131). Two sets of insert rods (136) are fixed on the top of the force-bearing strip (135). A connector (133) is sleeved on the top of the insert rod (136) and fixed to the front surface of the mold cover (132). The front surface of the side plate (134) is provided with a base column (1341) extending into the force-bearing strip (135). A constraint groove (1351) is provided at the contact position between the force-bearing strip (135) and the base column (1341).

2. The rigid foam molding die according to claim 1, characterized in that: A U-shaped platform (123) is rotatably provided inside the bracket (120) and near the top. The top of the U-shaped platform (123) is fixed to the bottom of the mold base (131). A gear plate (124) is fixed inside the U-shaped platform (123). A locking block (126) is engaged below the gear plate (124). A traction rod (122) is fixed to the bottom of the locking block (126). A pedal (121) is provided at the bottom of the traction rod (122) and rotatably connected to the top of the base plate (100).

3. The rigid foam molding die according to claim 1, characterized in that: A constant temperature chamber (110) is mounted on one side of the top of the base plate (100), and the side of the constant temperature chamber (110) is provided with a pipe that connects to the mold base (131) and the mold cover (132).

4. A rigid foam molding die according to claim 1, characterized in that: The top of the mold cover (132) is fixed with two sets of handles, and the ends of the handles extend to the front side of the mold cover (132).

5. A rigid foam molding die according to claim 1, characterized in that: The rear surface of the force strip (135) is provided with a dovetail block (137) extending into the mold base (131). The mold base (131) and the dovetail block (137) are provided with a stroke groove at the contact position. The upper and lower parts of the dovetail block (137) are provided with a return spring (138) fixed to the stroke groove.

6. A rigid foam molding die according to claim 2, characterized in that: The bottom outer wall of the card block (126) is fitted with a constraint frame (125). The outer wall of the constraint frame (125) is fixed to the inner wall of the bracket (120). A telescopic spring is fixed inside the constraint frame (125). The telescopic spring is fitted to the outer wall of the traction rod (122).

7. A rigid foam molding die according to claim 6, characterized in that: The top of the card block (126) is connected to the teeth with grooves on the outer wall of the matching toothed disc (124).

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