Processing mold with PVC (polyvinyl chloride) film applied to PU (polyurethane) mold foaming process

Abstract

The utility model relates to the technical field of processing moulds, in particular to a processing mould with a PVC (polyvinyl chloride) film, which is applied to a PU (polyurethane) mould foaming process and comprises an upper mould and a lower mould, a U-shaped cavity is arranged inside the lower mould, a plurality of suction holes are arranged on the inner wall of the lower mould, round holes are arranged on two side surfaces of the lower mould, and the upper mould and the lower mould are arranged in the U-shaped cavity. And suction pipes are fixedly installed on the two side faces of the lower mold and communicate with the two round holes correspondingly, push blocks are slidably installed in the suction pipes through elastic assemblies, pull rods are fixedly installed on the push blocks, vertical rods are fixedly installed at the ends, away from the push blocks, of the pull rods, and locking assemblies used for locking the vertical rods are arranged on the suction pipes. Through mutual cooperation of the suction pipe, the elastic assembly, the push block, the pull rod, the vertical rod and the locking assembly, air between a PVC film and the mold cavity can be sucked out, the PVC film can be tightly attached to the interior of the mold cavity, and therefore the product forming quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of processing molds, in particular to a processing mold with a PVC film used in a PU mold foaming process. Background Art

[0002] PU foam products are widely used in high-rebound foam, slow-rebound headrests, self-jointed leather, imitation wood rigid foam, shoe materials and other products. PU foam molds are usually used when the products are molded. PU foam molds are extremely widely used in mold molding, so the quality requirements for PU foam molds are getting higher and higher. PVC film has good wear resistance, good corrosion resistance, high quality and low price. When the mold is molded, PVC film is laid inside the mold to help demolding.

[0003] However, when the PVC film is laid in the mold groove, the PVC film cannot be laid in the mold groove in a close fit, which may cause air to exist between the PVC film and the mold groove, and the existence of air may affect the molding of the product. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: when the PVC film is laid in the mold groove, the PVC film cannot be laid in the mold groove in a close fit, which may cause air to exist between the PVC film and the mold groove, and the presence of air will affect the molding of the product. A processing mold with PVC film used in a PU mold foaming process is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A processing mold with a PVC film used in a PU mold foaming process, comprising an upper mold and a lower mold, wherein a U-shaped cavity is provided inside the lower mold, a plurality of suction holes are provided on the inner wall of the lower mold, and circular holes are provided on both sides of the lower mold, which are both connected to the U-shaped cavity;

[0007] Straws are fixedly installed on both sides of the lower mold, and the two straws are respectively connected to two circular holes. A push block is slidably installed in the straw through an elastic component, a pull rod is fixedly installed on the push block, a vertical rod is fixedly installed on the end of the pull rod away from the push block, and a locking component for locking the vertical rod is provided on the straw.

[0008] Preferably, the elastic component includes a mounting frame fixedly mounted on one end of the straw and a telescopic spring sleeved on a pull rod, the mounting frame is provided with a movable hole, the pull rod is slidably inserted in the movable hole, and the two ends of the telescopic spring are respectively fixedly connected to the push block and the mounting frame.

[0009] Preferably, the locking assembly comprises a positioning block fixedly mounted at one end of the straw and a support rod rotatably mounted on the vertical rod, and a positioning groove is formed at one end of the positioning block close to the vertical rod.

[0010] Preferably, first spring rods are vertically and symmetrically fixedly installed on both the front and rear side surfaces of the lower mold, and a pressure ring is fixedly installed on the upper ends of a plurality of the first spring rods. A limiting assembly for locking the pressure ring is provided on the lower mold.

[0011] Preferably, the limit assembly includes two rotating blocks rotatably mounted on the pressure ring, two second spring rods fixedly mounted on the two rotating blocks, two clamping blocks fixedly mounted on the other ends of the second spring rods, and two limit blocks fixedly mounted on the side surfaces of the lower mold, and the limit blocks are located on the rotation paths of the two clamping blocks.

[0012] Preferably, an anti-skid pad is fixedly installed on the lower surface of the pressure ring, and the anti-skid pad is made of rubber.

[0013] In the utility model, the beneficial effects are:

[0014] When the PVC film is laid in the mold groove, the air between the PVC film and the mold groove can be sucked out through the cooperation of the straw, elastic component, push block, pull rod, vertical rod and locking component, so that the PVC film can fit tightly in the mold groove, thereby ensuring the quality of product molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a processing mold with a PVC film used in a PU mold foaming process proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional structure diagram of a lower mold in a processing mold with a PVC film used in a PU mold foaming process proposed by the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure in the middle.

[0018] In the figure: 1 upper mold, 2 lower mold, 3 U-shaped cavity, 4 straw, 5 push block, 6 pull rod, 7 vertical rod, 8 mounting frame, 9 telescopic spring, 10 positioning block, 11 support rod, 12 first spring rod, 13 pressure ring, 14 rotating block, 15 second spring rod, 16 clamping block, 17 limit block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3 A processing mold with a PVC film used in a PU mold foaming process comprises an upper mold 1 and a lower mold 2, wherein a U-shaped cavity 3 is provided inside the lower mold 2, a plurality of suction holes are provided on the inner wall of the lower mold 2 and are all connected to the U-shaped cavity 3, and circular holes are provided on both sides of the lower mold 2 and are all connected to the U-shaped cavity 3;

[0021] Straws 4 are fixedly installed on both side surfaces of the lower mold 2. The two straws 4 are respectively connected to the two circular holes. A push block 5 is slidably installed in the straw 4 through an elastic component. A pull rod 6 is fixedly installed on the push block 5. A vertical rod 7 is fixedly installed on one end of the pull rod 6 away from the push block 5. A locking component for locking the vertical rod 7 is provided on the straw 4.

[0022] When the mold is in use, the PVC film is laid in the mold groove, and then the upper end of the PVC film is pressed against the upper end of the lower mold 2, and then the vertical rod 7 is pulled to drive the pull rod 6 to move, thereby driving the push block 5 to move in the straw 4 through the pull rod 6. The push block 5 is sealed and slidably installed in the straw 4, so that the air in the U-shaped cavity 3 will be sucked into the straw 4, and the air between the PVC film and the mold groove will be sucked into the U-shaped cavity 3, and the air between the PVC film and the mold groove will be sucked out, so that the PVC film can fit tightly in the mold groove, thereby ensuring the quality of product molding.

[0023] The elastic component includes a mounting frame 8 fixedly mounted on one end of the straw 4 and a telescopic spring 9 sleeved on the pull rod 6. A moving hole is provided on the mounting frame 8, and the pull rod 6 is slidably inserted in the moving hole. Both ends of the telescopic spring 9 are fixedly connected to the push block 5 and the mounting frame 8 respectively. The locking component includes a positioning block 10 fixedly mounted on one end of the straw 4 and a support rod 11 rotatably mounted on the vertical rod 7. A positioning groove is provided on one end of the positioning block 10 close to the vertical rod 7.

[0024] The mounting bracket 8 can drive the pull rod 6 to move in the suction tube 4. When the air between the PVC film and the mold cavity is sucked out, the support rod 11 is rotated and one end of the support rod 11 is inserted into the positioning groove, thereby limiting the pull rod 6 from moving back.

[0025] The front and rear sides of the lower mold 2 are both vertically and symmetrically fixedly installed with first spring rods 12, and the upper ends of the multiple first spring rods 12 are fixedly installed with a pressure ring 13. The lower mold 2 is provided with a limit assembly for locking the pressure ring 13, and the limit assembly includes two rotating blocks 14 respectively rotatably installed on the pressure ring 13, two second spring rods 15 respectively fixedly installed on the two rotating blocks 14, two clamping blocks 16 fixedly installed at the other ends of the second spring rods 15, and two limit blocks 17 fixedly installed on the side of the lower mold 2, and the limit block 17 is located on the rotation path of the two clamping blocks 16;

[0026] When the PVC film is laid in the mold groove, the upper end of the PVC film is put on the upper end of the lower mold 2, and then the plate pressing ring 13 is pressed downward to press the PVC film between the pressing ring 13 and the lower mold 2. The first spring rod 12 is compressed, and then the second spring rod 15 is pulled to drive the second spring rod 15 to stretch, and then the clamping block 16 is driven to rotate by the rotating block 14 and the second spring rod 15 until the clamping block 16 is rotated to the bottom of the limit block 17. Under the action of the elastic force of the second spring rod 15, the clamping block 16 and the limit block 17 are in contact, thereby limiting the upward movement of the pressing ring 13 and firmly pressing the PVC film in the mold groove.

[0027] An anti-skid pad is fixedly installed on the lower surface of the pressing ring 13. The anti-skid pad is made of rubber material. The anti-skid pad can protect the PVC film and increase the friction between the pressing ring 13 and the PVC film.

[0028] In the utility model, when the mold is in use, the PVC film is laid in the mold groove, and then the upper end of the PVC film is pressed against the upper end of the lower mold 2, and then the vertical rod 7 is pulled, and the push block 5 is driven to move in the straw 4 through the pull rod 6, so that the air in the U-shaped cavity 3 is sucked into the straw 4, and the air between the PVC film and the mold groove is sucked into the U-shaped cavity 3, and the air between the PVC film and the mold groove is sucked out, so that the PVC film can fit tightly in the mold groove, thereby ensuring the quality of product molding.

[0029] In general, with respect to the technical problem that when the PVC film is laid in the mold groove, the PVC film cannot be laid in the mold groove in a close fit, which may cause air to exist between the PVC film and the mold groove, and the presence of air will affect the molding of the product; a technical solution is adopted: the air between the PVC film and the mold groove can be sucked out through the cooperation of the straw 4, the elastic component, the push block 5, the pull rod 6, the vertical rod 7 and the locking component; because the implementation process of the technical solution is: when the mold is in use, the PVC film is laid in the mold groove, and then the upper end of the PVC film is pressed against the upper end of the lower mold 2, and then the vertical rod 7 is pulled, and the push block 5 is driven to move in the straw 4 through the pull rod 6, so that the air in the U-shaped cavity 3 will be sucked into the straw 4, and the air between the PVC film and the mold groove will be sucked into the U-shaped cavity 3, and the air between the PVC film and the mold groove will be sucked out; so the technical problem can definitely be solved, and the technical effect achieved is: the PVC film can fit tightly in the mold groove, thereby ensuring the quality of product molding.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A processing mold with a PVC film used in a PU mold foaming process, comprising an upper mold (1) and a lower mold (2), characterized in that: A U-shaped cavity (3) is provided inside the lower mold (2), a plurality of suction holes are provided on the inner wall of the lower mold (2) and are all connected to the U-shaped cavity (3), and circular holes are provided on both sides of the lower mold (2) and are all connected to the U-shaped cavity (3); Both side surfaces of the lower mold (2) are fixedly mounted with straws (4), the two straws (4) being respectively connected to the two circular holes, a push block (5) being slidably mounted in the straw (4) via an elastic component, a pull rod (6) being fixedly mounted on the push block (5), a vertical rod (7) being fixedly mounted on one end of the pull rod (6) away from the push block (5), and a locking component for locking the vertical rod (7) is provided on the straw (4).

2. The processing mold with PVC film used in the PU mold foaming process according to claim 1, characterized in that: The elastic component comprises a mounting frame (8) fixedly mounted on one end of the straw (4) and a telescopic spring (9) sleeved on the pull rod (6); a movable hole is provided on the mounting frame (8), the pull rod (6) is slidably inserted in the movable hole, and two ends of the telescopic spring (9) are respectively fixedly connected to the push block (5) and the mounting frame (8).

3. The processing mold with PVC film used in the PU mold foaming process according to claim 1, characterized in that: The locking assembly comprises a positioning block (10) fixedly mounted on one end of the straw (4) and a support rod (11) rotatably mounted on the vertical rod (7); a positioning groove is formed at one end of the positioning block (10) close to the vertical rod (7).

4. The processing mold with PVC film used in the PU mold foaming process according to claim 1, characterized in that: First spring rods (12) are vertically and symmetrically fixedly mounted on both front and rear side surfaces of the lower mold (2), and pressure rings (13) are fixedly mounted on the upper ends of a plurality of the first spring rods (12). A limiting assembly for locking the pressure rings (13) is provided on the lower mold (2).

5. The processing mold with PVC film used in the PU mold foaming process according to claim 4, characterized in that: The limit assembly comprises two rotating blocks (14) respectively rotatably mounted on the pressure ring (13), two second spring rods (15) respectively fixedly mounted on the two rotating blocks (14), two clamping blocks (16) fixedly mounted on the other ends of the second spring rods (15), and two limit blocks (17) fixedly mounted on the side surfaces of the lower mold (2), wherein the limit blocks (17) are located on the rotation path of the two clamping blocks (16).

6. The processing mold with PVC film used in the PU mold foaming process according to claim 4, characterized in that: An anti-skid pad is fixedly mounted on the lower surface of the pressure ring (13), and the anti-skid pad is made of rubber.

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