PVC (polyvinyl chloride) blowing upper-connecting mold
By setting a feeding channel in the PVC blown upper mold, the problem of unevenness in the heel area was solved, the pass rate of the sole was improved and the production cost was reduced.
Patent Information
- Application Number
- CN202520122611.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The unevenness of existing PVC blown shoe sole molds in the heel area leads to a low pass rate for soles and increases production costs.
Design a PVC blowing mold for upper construction. By setting a first feeding channel and a second feeding channel on the top plate, which are respectively aligned with the gap between the protruding pillars of the shoe last and the forefoot area, the PVC material is ensured to be evenly distributed during the blowing process.
It improves the production qualification rate of shoe soles, reduces production costs, avoids material accumulation or loss around the protrusions, and ensures the uniformity of the heel area.
Smart Images
Figure CN223720144U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a sole forming die, concretely relates to a PVC blowing continuous upper die. BACKGROUND
[0002] PVC blowing is a common production mode for sole forming, and its principle is that: the molten PVC material is injected into the mold through the mold injection system, and when the material is injected, the molten PVC material is blown up by compressed air to make it fill every corner of the mold. This process ensures the uniformity and integrity of the sole.
[0003] With the continuous change of the shape of the sole, the pattern on the sole is becoming more and more complex, especially the heel position of some soles needs to be laid with more hole positions for the connection and adhesion of air cushion and other functional accessories, which makes the last in the sole mold be provided with more column structures, and the sole obtained by the PVC blowing of such sole mold has the defect of uneven heel area, which leads to low qualified rate of the produced sole and increases the production cost. SUMMARY
[0004] To solve the above problems, the technical scheme provided by the utility model is:
[0005] A PVC blowing continuous upper die, comprising a base plate, a base, a last, a side mold and a top plate, the base is fixed on the base plate, the front and rear ends of the base plate are respectively provided with a hinge plate and a locking plate, a containing cavity is opened on the base, the side away from the base of the containing cavity is an open mouth, the last is arranged in the containing cavity, the side mold and the top plate are both movably connected on the hinge plate, the side mold is arranged between the base and the top plate, one side of the top plate is provided with a locking assembly connected with the locking plate; a plurality of columns are arranged on the heel area of the last, column gaps are arranged between the columns, a first feeding channel and a second feeding channel are opened on the top plate, the first feeding channel comprises a first feeding hole and a plurality of first discharge holes, the second feeding channel comprises a second feeding hole and a plurality of second discharge holes; when the mold is blow-molded, the first discharge holes are respectively opposite to the column gaps, and the second discharge holes are respectively opposite to the forefoot areas of the last.
[0006] The utility model is further provided with a sole pattern on one side of the top plate close to the last, and the first discharge holes and the second discharge holes are both located in the area where the sole pattern is located.
[0007] The utility model is further provided with the first feeding hole and the second feeding hole being both located on one side of the top plate away from the last.
[0008] The utility model further sets up two side molds on the hinge plate, and the hinge plate is provided with a hinge shaft, two side mold shaft sleeves and a top plate shaft sleeve which are independently rotatable are arranged on the hinge shaft, the side mold shaft sleeves are connected with the side molds respectively, and the top plate shaft sleeve is connected with the top plate.
[0009] The utility model further sets up a side mold connecting rod on the side mold, one end of the side mold connecting rod is fixed on the side mold shaft sleeve, the other end of the side mold connecting rod is provided with a bearing, and the bearing is connected with the side mold.
[0010] The utility model further sets up a top plate connecting rod on the top plate, the top plate connecting rod comprises a bending part and an extension part, the bending part is fixedly connected with the top plate shaft sleeve, and the extension part is fixedly connected with the top plate.
[0011] The utility model further sets up an air nozzle on one side of the base, and the air nozzle is communicated with the accommodating cavity.
[0012] The utility model further sets up a locking part on the locking plate, the locking assembly comprises a locking buckle hinged to one side of the top plate and a handle connected to the locking buckle, one end of the locking buckle is provided with a reverse buckle part used for locking with the locking part.
[0013] The utility model further sets up a positioning recess on the side mold and a positioning convex on the top plate, and the positioning recess is matched with the positioning convex.
[0014] Compared with the prior art, the technical scheme has the following beneficial effects:
[0015] The working principle of the PVC blowing continuous upper mold is as follows: the target shoe tree is placed into the accommodating cavity of the base, the side molds on both sides are spliced, the top plate is buckled on the side molds, the mold is locked through the locking assembly, the external PVC injection pipeline is aligned with the first feeding hole and the second feeding hole, the molten PVC material is injected into the mold cavity from the first feeding hole and the second feeding hole, the mold cavity is blown through the air nozzle, and thus the molten PVC material is blown and inflated to obtain a shoe sole with uniform heels.
[0016] The utility model discloses PVC blow and help mould through setting up first feed passageway and second feed passageway on the top plate, and controlling different area (convex post clearance and forepaw area) of shoe tree that they align respectively, can ensure that PVC material can be more evenly distributed to every corner of mould in the blow process, especially for the shoe sole mould with more convex post structure in heel area, this design can effectively avoid material accumulation or lack around the convex post, thereby solve the problem of unevenness in heel area, reduce the shoe sole defect caused by material accumulation or lack, significantly improve the qualified rate of the shoe sole produced, thereby reduce the production cost. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the three-dimensional view of the PVC blow and help mould in the closed state of the utility model embodiment.
[0018] Figure 2 It is the three-dimensional view of the PVC blow and help mould in the open state of the utility model embodiment.
[0019] Figure 3 It is the plan view of the PVC blow and help mould in the open state of the utility model embodiment.
[0020] Figure 4 It is the three-dimensional view of the base of the utility model embodiment.
[0021] Figure 5 It is the three-dimensional view of the edge mould connecting rod and edge mould shaft sleeve of the utility model embodiment.
[0022] Figure 6 It is the partial three-dimensional view of the PVC blow and help mould of the utility model embodiment.
[0023] Figure 7 It is the feeding hole point position schematic view of the PVC blow and help mould of the utility model embodiment. DETAILED DESCRIPTION
[0024] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings and the embodiment.
[0025] It should be explained that, in the case of no conflict, the embodiment in the utility model and the features in the embodiment can be combined with each other.
[0026] In the description of the utility model, it should be explained that, unless another explicit provision and limitation, the terms "mount", "connect", "connect" should be understood in broad sense, for example, can be fixed connection, integrally connected, can also be detachable connection, can be mechanical connection or electrical connection, also can be the communication of two elements inside, can be directly connected, also can be indirectly connected through the intermediate medium, for the ordinary skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.
[0027] In combination with the drawings Figure 1 To the drawings Figure 7 The utility model discloses a PVC blowing continuous helping mould, including base plate 1, base 2, shoe tree 3, side mould 4 and top plate 5, the base 2 is fixed on the base plate 1, the front and rear both ends of base plate 1 are equipped with hinged plate 11 and locking plate 12 respectively, the accommodating cavity 21 is seted up on the base 2, the side of accommodating cavity 21 away from the base 2 is the open mouth of open, the shoe tree 3 is set in accommodating cavity 21, the side mould 4 and top plate 5 all movably connect on hinged plate 11, the side mould 4 is set between the base 2 and top plate 5, one side of top plate 5 is equipped with the locking assembly 6 connected with locking plate 12;The heel area 31 of shoe tree 3 is equipped with a plurality of convex columns 33, and the convex column gap 34 is arranged between the convex columns 33, the first feeding channel and the second feeding channel are set up on the top plate 5, the first feeding channel includes first feeding hole 51 and a plurality of first discharge holes 52, and the second feeding channel includes second feeding hole 53 and a plurality of second discharge holes 54;When the mould is injection blow, the first discharge hole 52 is respectively opposite the convex column gap 34, and the second discharge hole 54 is respectively opposite the forefoot region 32 of the shoe tree 3.
[0028] The utility model discloses a PVC blowing continuous helping mould, through setting up first feeding channel and second feeding channel on top plate 5, and respectively controlling them to aim at different regions (convex column gap 34 and forefoot region 32) of shoe tree, can ensure that PVC material can be more evenly distributed to every corner of mould in the blowing process, especially for the shoe sole mould with more convex column 33 structure in heel area 31, this design can effectively avoid that material accumulates or is missing around convex column 33, thereby solve the problem of unevenness of heel area, reduce the shoe sole defect caused by material accumulation or missing, significantly improve the qualified rate of produced shoe sole, thereby reduce production cost.
[0029] In the embodiment, the side of top plate 5 close to shoe tree 3 is equipped with shoe sole grain 55, and the first discharge hole 52 and the second discharge hole 54 are all located in the region where shoe sole grain 55 is located, and the shoe sole grain 55 is not shown in the drawings, which can be referred to Figure 7 For the hole distribution of first discharge hole 52 and second discharge hole 54 on shoe tree 3 in the closed state of PVC blowing continuous helping mould.
[0030] In the embodiment, the first feeding hole 51 and the second feeding hole 53 are all located on the side of top plate 5 away from shoe tree 3, that is, the surface of top plate 5.
[0031] In the embodiment, as shown in the drawings Figure 2As shown, two side molds 4 are provided. The inner side of each side mold 4 is provided with a shoe sole side pattern 41. The upper part of the hinge plate 11 is provided with a hinge shaft 13. The hinge shaft 13 is provided with two independently rotating side mold bushings 14 and a top plate bushing 15. The side mold bushings 14 are respectively connected to the side molds 4, and the top plate bushing 15 is connected to the top plate 5; as shown in the attached figure. Figure 2 , 3 As shown in Figure 6, the side mold bushing 14 and the top plate bushing 15 share a hinge shaft 13. When the mold is in the closed state, the side mold 4 and the top plate 5 are in different planes.
[0032] In this embodiment, the side mold 4 is provided with a side mold connecting rod 42. One end of the side mold connecting rod 42 is fixed on the side mold bushing 14, and the other end of the side mold connecting rod 42 is provided with a bearing 43, which is connected to the side mold 4.
[0033] In this embodiment, the top plate 5 is provided with a top plate connecting rod 56, which includes a bent portion 561 and an extension portion 562. The bent portion 561 is fixedly connected to the top plate bushing 15, and the extension portion 562 is fixedly connected to the top plate 5. The structure of the top plate connecting rod 56 enables the top plate 5 to be smoothly pressed onto the side mold 4.
[0034] In this embodiment, an air nozzle 22 is provided on one side of the base 2, and the air nozzle 22 is connected to the receiving cavity 21.
[0035] In this embodiment, the locking plate 12 is provided with a locking part 16, and the locking assembly 6 includes a locking buckle 61 hinged to one side of the top plate 5 and a handle 62 connected to the locking buckle 61. One end of the locking buckle 61 is provided with a reverse buckle 63 for locking with the locking part 16.
[0036] In this embodiment, the side mold 4 is provided with a positioning recess 44, and the top plate 5 is provided with a positioning protrusion 57. The positioning recess 44 and the positioning protrusion 57 are adapted to each other and are used for positioning in the mold closed state to ensure injection molding accuracy.
[0037] In this embodiment, the working principle of the PVC blown-upper mold is as follows: the target shoe last 3 is placed into the receiving cavity 21 of the base 2, the side molds 4 on both sides are assembled, and the top plate 5 is fastened to the side mold 4. The mold is locked by the locking component 6. The external PVC injection pipe is aligned with the first feed hole 51 and the second feed hole 53. Molten PVC material is injected into the mold cavity from the first discharge hole 52 and the second discharge hole 54. Then, air is blown into the mold cavity through the air nozzle 22, thereby inflating the molten PVC material to obtain a shoe sole with a uniform heel.
[0038] The above describes the utility model and its embodiments in a schematic manner, and the description is not restrictive, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are designed without creativity, and all should belong to the protection scope of the utility model.
Claims
1. A PVC blow-through upper mold characterized by, The utility model provides a mould for injection blow moulding, which comprises a base plate, a base, a last, a side mould and a top plate, the base is fixed on the base plate, the front and rear ends of the base plate are respectively provided with a hinged plate and a locking plate, a containing cavity is formed in the base, the side away from the base of the containing cavity is an open mouth, the last is arranged in the containing cavity, the side mould and the top plate are movably connected to the hinged plate, the side mould is arranged between the base and the top plate, one side of the top plate is provided with a locking assembly connected with the locking plate, a plurality of convex columns are arranged on the heel area of the last, a convex column gap is arranged between the convex columns, a first feeding channel and a second feeding channel are formed in the top plate, the first feeding channel comprises a first feeding hole and a plurality of first discharging holes, the second feeding channel comprises a second feeding hole and a plurality of second discharging holes, when the mould is used for injection blow moulding, the first discharging holes are respectively opposite to the convex column gaps, and the second discharging holes are respectively opposite to the forefoot areas of the last.
2. A PVC blow last form according to claim 1, wherein, The side of the top plate close to the last is provided with a sole pattern, and the first discharging holes and the second discharging holes are located in the area where the sole pattern is located.
3. A PVC blow last form according to claim 2, wherein, The first feeding hole and the second feeding hole are located on the side of the top plate away from the last.
4. The PVC blow last form according to claim 1, wherein, The side mould is provided with two side moulds, the inner side of the side mould is provided with a sole side pattern, the upper part of the hinged plate is provided with a hinged shaft, the hinged shaft is provided with two side mould shaft sleeves and a top plate shaft sleeve which rotate independently, the side mould shaft sleeves are connected with the side mould respectively, and the top plate shaft sleeve is connected with the top plate.
5. A PVC blow last form according to claim 4, wherein, The side mould is provided with a side mould connecting rod, one end of the side mould connecting rod is fixed on the side mould shaft sleeve, the other end of the side mould connecting rod is provided with a bearing, and the bearing is connected with the side mould.
6. A PVC blow last form according to claim 4, wherein, The top plate is provided with a top plate connecting rod, the top plate connecting rod comprises a bending part and an extension part, the bending part is fixedly connected with the top plate shaft sleeve, and the extension part is fixedly connected with the top plate.
7. A PVC blow last form according to any one of claims 1 to 6, wherein, One side of the base is provided with an air nozzle, and the air nozzle is communicated with the containing cavity.
8. A PVC blow last form according to any one of claims 1 to 6, wherein, The locking plate is provided with a locking part, the locking assembly comprises a locking buckle hinged to one side of the top plate and a handle connected to the locking buckle, and one end of the locking buckle is provided with a reverse buckle part used for mutual locking with the locking part.
9. A PVC blow last form according to any one of claims 1 to 6, wherein, The side mould is provided with a positioning recess, the top plate is provided with a positioning protrusion, and the positioning recess is matched with the positioning protrusion.