Single-drive foam box mold perforating structure

Abstract

The invention discloses a single-drive foam box mold perforating structure which comprises a supporting stand column, an air cylinder, a guide support, two first perforating units and two second perforating units, and the air cylinder is externally arranged on a top cover of a movable mold of a foam box and used for providing power; a supporting stand column extending in the first direction is installed at the rod end of the air cylinder, and the end of the supporting stand column is fixed to a guide support arranged in the movable mold of the foam box. The guide support is in rolling contact fit with the two first perforating units and the two second perforating units. The guide support is driven by the air cylinder to movably move in the first direction, so that the two groups of first perforating units have a first state of extending out of a first side plate and a second side plate which are opposite to each other of the movable mold of the foam box and a second state of retracting into the movable mold of the foam box; and the two groups of second perforating units have a third state of extending out of a third side plate and a fourth side plate which are opposite to each other, and have a fourth state of retracting into the foam box movable mold. Through an innovative linkage mechanism, a single air cylinder is used for driving, and punching and core pulling actions of the foam box mold in multiple directions are synchronously achieved.

Description

Technical Field

[0001] This invention relates to a single-drive perforation structure for foam box molds, belonging to the field of foam box production mold technology. Background Technology

[0002] Foam boxes are a widely used packaging material, and their production often employs mold foaming molding.

[0003] To meet specific usage requirements, foam boxes typically need to have perforated structures on their four vertical sidewalls. This necessitates the installation of a corresponding core-pulling mechanism within the mold to extract the core forming the perforations before demolding. In existing technology, the mainstream solution for achieving this function is to independently install a cylinder drive system in each of the four sidewall directions of the mold. That is, the core-pulling action in each direction is driven and controlled by a dedicated cylinder. While this "one cylinder per direction" design can achieve the basic core-pulling function, it has significant drawbacks in actual production and application: First, it requires four cylinders and corresponding solenoid valves, air lines, and control systems, resulting in a complex mold structure and high manufacturing and maintenance costs. Second, multiple cylinders occupy a large amount of external space in the mold, making the overall mold structure less compact. Therefore, there is an urgent need in the field for a multi-directional core-pulling solution for foam box molds that is structurally simpler, operates reliably, and can effectively reduce manufacturing costs. Summary of the Invention

[0004] This invention provides a single-drive perforation structure for foam box molds, which can be used to achieve one-time synchronous molding of holes in the side wall of foam boxes. This solves the problems of complex equipment structure, high manufacturing cost, and difficulty in controlling the synchronization of actions caused by the use of multiple independent cylinders for lateral core pulling in existing foam box molds.

[0005] The technical solution of this invention is: A single-drive foam box mold perforation structure, comprising: The drive unit includes a support column 2, a cylinder 8, and a guide support 17. The cylinder 8 is externally mounted on the top cover 7 of the foam box moving mold 1 and is used to provide power. The rod end of the cylinder 8 is mounted on the support column 2 extending along a first direction, and the end of the support column 2 is fixed to the guide support 17 placed inside the foam box moving mold 1. Two sets of first perforation units, which are arranged opposite to each other, can be positioned relatively close to or far apart along the second direction; Two sets of second perforated units, which are arranged opposite to each other, can be positioned relatively close to or far apart along a third direction; The guide support 17 rolls into contact with two sets of first perforated units and two sets of second perforated units. The guide support 17 is movably moved along a first direction by the cylinder 8, so that the two sets of first perforated units have a first state in which they extend out of the foam box moving mold 1 and are in a relative first side plate and second side plate, and a second state in which they retract into the foam box moving mold 1. The two sets of second perforated units have a third state in which they extend out of the foam box moving mold 1 and are in a relative third side plate and fourth side plate, and a fourth state in which they retract into the foam box moving mold 1.

[0006] Furthermore, it also includes an internal support unit, which comprises: The positioning block 4 is mounted on the bottom plate of the foam box moving mold 1 via the support base 3. The positioning block 4 is arranged in a one-to-one correspondence with the two sets of first perforation units and the two sets of second perforation units. The positioning block 4 has a first slot on the side away from the support base 3. Positioning cover plate 6, which is provided in a one-to-one correspondence with positioning block 4, and the positioning cover plate 6 is installed on positioning block 4; the positioning cover plate 6 is provided with a second groove on the side near the positioning block 4; the first groove and the second groove form a bushing limiting channel; Bushing 5 is installed in bushing limiting channel to guide the movement of each first perforated unit along the second direction and the movement of each second perforated unit along the third direction.

[0007] Furthermore, a through clearance groove is provided on the horizontal plate of the support base 3, and a clearance area is formed between the horizontal plate and the bottom plate of the foam box moving mold 1 to provide movement space for the guide support 17.

[0008] Furthermore, the axial direction of the bushing limiting channel formed by the positioning block 4 and the positioning cover plate 6, which are arranged one-to-one with the first perforation unit, is the second direction, and the axial direction of the bushing limiting channel formed by the positioning block 4 and the positioning cover plate 6, which are arranged one-to-one with the second perforation unit, is the third direction.

[0009] Furthermore, the first perforation unit and the second perforation unit have basically the same structure. Taking the first perforation unit as an example, the first perforation unit includes: a support plate 10, a guide post 12, a support rod 13, a bearing 14, a first perforation support 15, and a first push rod 16; the first push rod 16, which extends along the second direction, has the support rod 13 installed at one end, and the axial direction of the support rod 13 is the third direction; the bearing 14, which is rotatably fitted, is installed on the support rod 13, and the bearing 14 is in rolling contact with the guide support 17; the other end of the first push rod 16 passes through and fixes the support plate 10 and the first perforation support 15, and the support plate 10 is arranged on the side closer to the bearing 14; the support plate 10 is provided with a guide post 12 extending along the second direction on the side closer to the bearing 14, for guiding the movement of the first perforation unit along the second direction; the first perforation support 15 includes a push plate and a perforation rod extending along the second direction on the side of the push plate away from the bearing 14.

[0010] Furthermore, a spring 18 is fitted onto the perforated rod located between the push plate of the first perforated support 15 and the side plate of the foam box moving mold 1.

[0011] Furthermore, the guide support 17 includes a base body, which has guide grooves along the circumference that cooperate with two sets of first perforation units and two sets of second perforation units; and the four guide grooves have a gradually expanding structure from the bottom plate of the foam box moving mold 1 towards the top cover.

[0012] The beneficial effects of this invention are as follows: Through an innovative linkage mechanism driven by a single cylinder, this invention simultaneously achieves the perforation and core-pulling actions of the foam box mold in multiple directions. Pure mechanical linkage ensures absolute synchronization of all push rod movements, significantly reducing manufacturing costs and maintenance complexity, fundamentally improving the reliability and stability of equipment operation, while also making the overall structure more compact. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall isometric structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the internal overall isometric structure of the present invention (spring not shown).

[0015] Figure 3 This is a schematic diagram of the isometric structure of the drive unit of the present invention.

[0016] Figure 4 This is an isometric structural diagram of the first perforated unit of the present invention.

[0017] Figure 5 This is a schematic diagram of the isometric structure of the second perforated unit of the present invention.

[0018] Figure 6This is an isometric structural diagram of the internal support unit of the present invention.

[0019] Figure 7 This is a schematic diagram of the assembly of the perforated unit and the internal support unit of the present invention.

[0020] Figure 8 This is a schematic diagram of the assembly of the perforated unit and the drive unit of the present invention.

[0021] Figure 9 This is a schematic diagram of the support rod assembly of the present invention.

[0022] Figure 10 This is a schematic diagram of the bearing assembly of the present invention.

[0023] Figure 11 This is a cross-sectional schematic diagram of the working condition of the present invention.

[0024] Figure 12 This is a schematic cross-sectional view of the working conditions of the present invention.

[0025] Figure 13 This is a partial structural diagram of the present invention.

[0026] The following are the labels in the diagram: 1. Foam box moving mold; 2. Support column; 3. Support base; 4. Positioning block; 5. Bushing; 6. Positioning cover plate; 7. Top cover; 8. Cylinder; 9. Second perforated support; 10. Support plate; 11. Second push rod; 12. Guide column; 13. Support rod; 14. Bearing; 15. First perforated support; 16. First push rod; 17. Guide support; 18. Spring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0028] Example 1: As Figures 1-13 As shown, a single-drive foam box mold perforation structure includes: The drive unit includes a support column 2, a cylinder 8, and a guide support 17. The cylinder 8 is externally mounted on the top cover 7 of the foam box moving mold 1 and is used to provide power. The rod end of the cylinder 8 is mounted on the support column 2 extending along a first direction, and the end of the support column 2 is fixed to the guide support 17 placed inside the foam box moving mold 1. Two sets of first perforation units, which are arranged opposite to each other, can be positioned relatively close to or far apart along the second direction; Two sets of second perforated units, which are arranged opposite to each other, can be positioned relatively close to or far apart along a third direction; The guide support 17 rolls into contact with two sets of first perforated units and two sets of second perforated units. The guide support 17 is movably moved along a first direction by the cylinder 8, so that the two sets of first perforated units have a first state in which they simultaneously extend out of the foam box moving mold 1 and are opposite to the first and second side plates, and a second state in which they simultaneously retract into the foam box moving mold 1. The two sets of second perforated units have a third state in which they simultaneously extend out of the foam box moving mold 1 and are opposite to the third and fourth side plates, and a fourth state in which they simultaneously retract into the foam box moving mold 1.

[0029] For example, the moving mold 1 of the foam box adopts a cubic cavity structure (the moving mold 1 of the foam box is the inner mold), with a top cover 7 and a bottom plate facing each other, a first side plate and a second side plate facing each other, and a third side plate and a fourth side plate facing each other. The top cover (bottom plate), the first side plate (second side plate), and the third side plate (fourth side plate) are perpendicular to each other. The bottom plate, the first side plate, the second side plate, the third side plate, and the fourth side plate form an integral box structure with an open top. The top cover 7 is used to open / close the box. The cylinder body of the cylinder 8 is fixed to the top cover 7. The rod end of the cylinder 8 is threadedly connected to one end of the support column 2, and the other end of the support column 2 is equipped with a threaded guide support 17.

[0030] Furthermore, the single-drive foam box mold perforation structure also includes an internal support unit, which comprises: The positioning block 4 is mounted on the bottom plate of the foam box moving mold 1 via the support base 3. The positioning block 4 is arranged in a one-to-one correspondence with the two sets of first perforation units and the two sets of second perforation units. The positioning block 4 has a first slot on the side away from the support base 3. Positioning cover plate 6 is provided in a one-to-one correspondence with positioning block 4, and the positioning cover plate 6 is fixedly installed on the positioning block 4; the positioning cover plate 6 is provided with a second groove on the side near the positioning block 4; the first groove and the second groove form a bushing limiting channel; Bushing 5 is installed in bushing limiting channel to guide the movement of each first perforated unit along the second direction and the movement of each second perforated unit along the third direction.

[0031] Furthermore, the horizontal plate of the support base 3 has a through clearance groove, and a clearance area is formed between the horizontal plate and the bottom plate of the foam box moving mold 1 to provide movement space for the guide support 17. The support base 3 includes a horizontal plate and a vertical plate installed on one side of the horizontal plate.

[0032] Furthermore, the axial direction of the bushing limiting channel formed by the positioning block 4 and the positioning cover plate 6, which are arranged one-to-one with the first perforation unit, is the second direction, and the axial direction of the bushing limiting channel formed by the positioning block 4 and the positioning cover plate 6, which are arranged one-to-one with the second perforation unit, is the third direction.

[0033] For example, there are a total of four sets of positioning blocks 4, two sets corresponding to the first perforation unit and two sets corresponding to the second perforation unit; taking the first side plate and the second side plate as the width direction side plates, and the third side plate and the fourth side plate as the length direction side plates, it is further explained as follows: the center of the horizontal plate of the support base 3 is provided with a through clearance groove, and the four corners of the clearance groove are provided with two sets of positioning blocks 4 corresponding to the second perforation unit. The four corners of the horizontal plate of the support base 3 are provided with two sets of positioning blocks 4 corresponding to the first perforation unit, and the "two sets of positioning blocks 4 corresponding to the second perforation unit" are located between the "two sets of positioning blocks 4 corresponding to the first perforation unit". Reference Figure 6 The positioning block referred to by the label 4 is "two sets of positioning blocks 4 that are set one-to-one with the second perforation unit".

[0034] Further, refer to Figure 4 The first and second perforated units have basically the same structure. The first perforated unit is described below. It includes a support plate 10, a guide post 12, a support rod 13, a bearing 14, a first perforated support 15, and a first push rod 16. One end of the first push rod 16, extending along a second direction, is fixedly mounted with the support rod 13, and the axial direction of the support rod 13 is a third direction. A rotating bearing 14 is mounted on the support rod 13, and the bearing 14 rolls into contact with the guide support 17. The other end of the first push rod 16 passes through and is fixedly fitted to the support plate 10 and the first perforated support 15, with the support plate 10 close to the bearing 14. One side arrangement (a support plate 10 is fixedly installed at the end of the first perforated support 15 so that the two are arranged in close contact; the other end of the first push rod 16 is connected to the support plate 10 and the first perforated support 15 in sequence by threads, and the end of the first push rod 16 extending out of the first perforated support 15 can be fastened with a nut); the support plate 10 is symmetrically provided with guide posts 12 extending in the second direction at both ends near the bearing 14, and the guide posts 12 are slidably installed in the bushing to guide the movement of the first perforated unit in the second direction; the first perforated support 15 includes a push plate and a perforated rod extending in the second direction provided on the side of the push plate away from the bearing 14. Further, refer to Figure 5The second perforation unit includes a support plate 10, a guide post 12, a support rod 13, a bearing 14, a second perforation support 9, and a second push rod 11. One end of the second push rod 11, which extends along a third direction, is fixedly mounted with the support rod 13, and the axial direction of the support rod 13 is the second direction. A bearing 14, which is rotatably fitted, is mounted on the support rod 13, and the bearing 14 is in rolling contact with the guide support 17. The other end of the second push rod 11 passes through and is fixedly fitted to the support plate 10 and the second perforation support 9, with the support plate 10 positioned closer to the bearing 14. Guide posts 12, extending along a third direction, are symmetrically fixed at both ends of the support plate 10 near the bearing 14 to guide the movement of the second perforation unit along the third direction. The second perforation support 9 includes a push plate and a perforation rod extending along a third direction on the side of the push plate away from the bearing 14. It should be noted that the first perforation unit and the second perforation unit have basically the same structure, the difference being that: the size of the first perforation support 15 in the first perforation unit is adapted to the first and second side plates in the width direction (i.e., the short side direction of the moving mold of the foam box); the size of the second perforation support 9 in the second perforation unit is adapted to the third and fourth side plates in the length direction (i.e., the long side direction of the moving mold of the foam box); and the first push rod 16 is longer than the second push rod 11.

[0035] Furthermore, a spring 18 is fitted onto the perforated rod located between the push plate of the first perforated support 15 and the side plate of the foam box moving mold 1.

[0036] Furthermore, the guide support 17 includes a base body, the base body having guide grooves along its circumference that mate with two sets of first perforated units and two sets of second perforated units; and the four guide grooves have a gradually expanding structure from the bottom plate of the foam box moving mold 1 towards the top cover. (Reference) Figure 8 , Figure 11 , Figure 12 Each guide groove is in rolling contact with the bearing of the corresponding perforated unit; under the action of the cylinder 8, the support column 2 can achieve axial movement; then under the action of the support column 2, the guide support 17 can achieve axial movement; then under the action of the guide support 17, the first perforated unit and the second perforated unit can achieve lateral movement in the second and third directions.

[0037] The working principle of this invention is as follows: Before using the foam box mold perforation structure equipment, first place the mechanism inside the outer mold (the outer mold is the fixed mold), according to... Figures 1-13 When using the equipment, first connect the perforated structure of the foam box mold to an external high-pressure gas, and control the piston movement of cylinder 8 through the electromagnetic reversing valve.

[0038] by Figure 11 , Figure 12From this perspective, when the piston inside cylinder 8 moves upward, the support column 2 rises accordingly (i.e., Figure 12 Switch to Figure 11 This causes the guide support 17 to move upwards. The spring 18 installed between the first and second perforated units and the moving mold 1 of the foam box (i.e., the inner mold) can push the first and second perforated units towards the center of the inner mold. With the guide support 17 moving upwards, the bearings 14 at the ends of the first and second perforated units are tightly against the guide grooves on the surface of the guide support 17. Simultaneously, the guide post 12, under the action of the bushing 5, achieves a horizontal inward movement. Figure 11 As shown, this allows for the recycling of the perforated unit, facilitating the installation of the inner mold and the removal of the foam box.

[0039] When the piston inside cylinder 8 moves downward, the support column 2 also descends (i.e., Figure 11 Switch to Figure 12 As a result, the guide support 17 also moves downwards; under the condition that the guide support 17 moves downwards, the bearings 14 at the ends of the first and second perforated units are in close contact with the guide grooves on the surface of the guide support 17, and at the same time, the guide post 12, under the action of the bushing 5, achieves the working condition of moving horizontally outwards, that is... Figure 12 As shown, this enables the perforation unit to be pushed out, so as to leave a hole structure on the four vertical side walls of the foam box when making the foam box.

[0040] As can be seen from the above technical solution, the present invention provides a highly reliable mold structure that can ensure a compact mold structure, a simplified drive unit, and absolutely synchronized actions, providing a reliable hardware foundation for efficient and low-cost foam box production.

[0041] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A single drive foam box mold piercing structure, characterized by, The utility model relates to a foam box moulding machine, which comprises a driving unit, a supporting unit and an internal supporting unit. The driving unit comprises a supporting column (2), a cylinder (8) and a guide support (17), the cylinder (8) is externally arranged on the top cover (7) of the foam box moulding machine (1) and is used for providing power, the rod end of the cylinder (8) is provided with the supporting column (2) extending in the first direction, and the end of the supporting column (2) is fixed to the guide support (17) arranged in the foam box moulding machine (1). Two groups of first perforating units are oppositely arranged and can be relatively close or far away in the second direction. Two groups of second perforating units are oppositely arranged and can be relatively close or far away in the third direction. The guide support (17) is in rolling contact with the two groups of first perforating units and the two groups of second perforating units, the guide support (17) is driven by the cylinder (8) to move in the first direction, so that the two groups of first perforating units have a first state of extending out of the foam box moulding machine (1) to form opposite first side plates and second side plates and have a second state of retracting into the foam box moulding machine (1), and the two groups of second perforating units have a third state of extending out of the foam box moulding machine (1) to form opposite third side plates and fourth side plates and have a fourth state of retracting into the foam box moulding machine (1).

2. The single drive foam box mold piercing structure of claim 1, wherein, The internal supporting unit comprises a positioning block (4) and a positioning cover plate (6). The positioning block (4) is arranged on the bottom plate of the foam box moulding machine (1) through the supporting seat (3) and is arranged in one-to-one correspondence with the two groups of first perforating units and the two groups of second perforating units, and the first notch is arranged on the side of the positioning block (4) away from the supporting seat (3). The positioning cover plate (6) is arranged in one-to-one correspondence with the positioning block (4) and is arranged on the positioning block (4), the second notch is arranged on the side of the positioning cover plate (6) close to the positioning block (4), and the first notch and the second notch form a bushing limiting channel. The bushing (5) is arranged in the bushing limiting channel and is used for guiding the movement of each first perforating unit in the second direction and the movement of each second perforating unit in the third direction.

3. The single drive foam box mold piercing structure of claim 2, wherein, The horizontal plate of the supporting seat (3) is provided with a through avoiding groove, and an avoiding area is formed between the horizontal plate and the bottom plate of the foam box moulding machine (1) to provide a movement space for the guide support (17).

4. The single drive foam box mold piercing structure of claim 3, wherein, The axial direction of the bushing limiting channel formed by the positioning block (4) and the positioning cover plate (6) arranged in one-to-one correspondence with the first perforating unit is the second direction, and the axial direction of the bushing limiting channel formed by the positioning block (4) and the positioning cover plate (6) arranged in one-to-one correspondence with the second perforating unit is the third direction.

5. The single drive foam box mold piercing structure of claim 1, wherein, The first perforating unit and the second perforating unit are basically identical, and the first perforating unit is described as follows: the first perforating unit comprises a support plate (10), a guide column (12), a support rod (13), a bearing (14), a first perforating support (15), and a first push rod (16); one end of the first push rod (16) extending along a second direction is provided with the support rod (13), and the axial direction of the support rod (13) is a third direction; the support rod (13) is provided with the bearing (14) in rotation fit, the bearing (14) is in rolling contact fit with the guide support (17); the other end of the first push rod (16) penetrates through the support plate (10) and the first perforating support (15), and the support plate (10) is arranged close to the bearing (14); the support plate (10) close to the bearing (14) is provided with the guide column (12) extending along the second direction, so as to guide the movement of the first perforating unit along the second direction; the first perforating support (15) comprises a push plate and a perforating rod extending along the second direction and arranged on the side of the push plate away from the bearing (14).

6. The single drive foam box mold piercing structure of claim 1, wherein, A spring (18) is sleeved on the perforating rod between the push plate of the first perforating support (15) and the side plate of the movable mold (1) of the foam box.

7. The single drive foam box mold piercing structure of claim 1, wherein, The guide support (17) comprises a seat body, the seat body is provided with guide grooves in circumferential direction, the guide grooves are matched with the two groups of first perforating units and the two groups of second perforating units, and the four guide grooves are in a gradually expanding structure from the bottom plate to the top cover of the movable mold (1) of the foam box.

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