Mould for manufacturing foaming insole

Abstract

The invention relates to the technical field of foaming insole manufacturing, in particular to a foaming insole manufacturing mold which comprises a bottom plate, a lower pressing plate, an upper mold body and a lower mold body, the top of the lower mold body is connected with an air storage assembly, the upper mold body is connected to the bottom of the lower pressing plate, and a telescopic spring is connected between the upper mold body and the lower pressing plate; a pressing rod is connected to the front side of the upper die, a cutter assembly is installed in the upper die and connected with a lower pressing plate, a limiting assembly is connected between the lower pressing plate and the upper die, and fixing assemblies are connected to the front sides of the upper die, the lower die and the lower pressing plate. According to the device, the fixing assembly is unlocked by pressing the pressing rod downwards to fix the upper mold and the lower mold, and meanwhile, the annular cutter is driven by the pressing plate to move downwards to cut cloth, so that the manufacturing process of the insole is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foam insole manufacturing, in particular to a mold for manufacturing the foam insole. Background Art

[0002] Foam insoles are made through a specific foaming process and have the advantages of being light, soft, elastic and having excellent shock-absorbing properties. When making existing foam insoles, the foaming material is first injected into a mold, and the foaming material is heated in the mold, a chemical reaction occurs to produce dense bubbles, which increases the volume of the foaming material and fits with the inner wall of the mold, and finally cools and solidifies to form an insole.

[0003] Polyurethane is one of the raw materials for foaming insoles. For example, when making polyurethane insoles, first stick a layer of cloth on the bottom of the upper mold, then turn the upper mold downward to fit it with the lower mold, and then fix the upper mold and the lower mold through a fixing device. When the foaming is completed, release the fixation between the upper mold and the lower mold to avoid the upper mold and the lower mold from shifting during the foaming process, which affects the foaming quality. At the same time, a certain pressure is also applied to the foaming material to make the foaming material better formed. Then the upper mold is turned upward to separate it from the lower mold. At this time, the insole will stick to the bottom of the cloth and detach from the lower mold together with the cloth. Then the foamed insoles are collected and transported to the cutting machine. Finally, the cutting machine is used to punch and cut the insoles to cut off the excess cloth on the top of the insole. There are many production processes and low efficiency.

[0004] For this reason, a kind of making mould of foaming insole is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a mold for making foamed insoles. In order to solve the problem that the insoles need to be punched and cut after foaming, resulting in low production efficiency, a cutting ring is added inside the upper mold, and the insole is cut during the process of opening the cover of the mold after foaming, thereby solving the problem that the insole needs to be punched and cut after foaming, resulting in low production efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A mold for making a foam insole comprises a bottom plate, a lower pressing plate, an upper mold and a lower mold, the top of the lower mold is connected with an air storage component, the upper mold is connected to the bottom of the lower pressing plate, and a telescopic spring is connected between the upper mold and the lower pressing plate, a pressing rod is connected to the front side of the upper mold, a cutting knife component is installed inside the upper mold, the cutting knife component is connected to the lower pressing plate, a limiting component is connected between the lower pressing plate and the upper mold, and a fixing component is connected to the upper mold, the lower mold and the front side of the lower pressing plate, the lower pressing plate drives the upper mold to fit the lower mold through the pressing rod, at this time the fixing component fixes the upper mold and the lower mold, and the limiting component limits the lower pressing plate from moving downward before foaming is completed, and during the foaming process, the insole releases the limit of the lower pressing plate by the limiting component by squeezing the air storage component, and when the foaming is finished, the pressing rod is continued to be pressed downward to move the lower pressing plate downward and release the fixation of the fixing component, and at the same time, the lower pressing plate drives the cutting knife component to move downward.

[0008] In the production process of existing polyurethane foam shoes, a layer of cloth is attached to the bottom of the upper mold. When the foaming is completed, the insole will adhere to the bottom of the cloth, and then the sole will be cut from the cloth by stamping. There are many production processes and low efficiency.

[0009] In the above scheme, when the insole is foamed, the cutter assembly inside the upper mold unlocks the fixing assembly by pressing the pressure rod, and at the same time, the cutter assembly is driven by the lower pressure plate to cut the fabric, thereby simplifying the insole production process and improving production efficiency.

[0010] Preferably, two cutting knife grooves are provided at the bottom of the upper mold, and the cutting knife assembly is installed inside the cutting knife grooves. The cutting knife assembly includes an annular knife and a slider, and the annular knife is slidably connected inside the cutting knife groove. The cross section of the annular knife is set to be T-shaped, and the slider is connected to the top of the annular knife. The slider passes through the cutting knife groove and is connected to the lower pressing plate. The slider cross section is set to be L-shaped and arranged in two rectangles.

[0011] In the above scheme, the bottom of the annular knife is flush with the edge of the cutting groove in the initial state. When the foaming is completed, the slider is driven to move by pressing the lower pressing plate, which indirectly drives the annular knife to move downward to cut the cloth.

[0012] Preferably, the limit assembly includes a limit block and a return spring, a limit groove is provided at the top of the upper mold, the cross-section of the limit block is set to L-shape, the limit block is slidably connected to the inside of the limit groove, a limit hole is provided at the bottom of the lower pressure plate, the limit block cooperates with the limit hole, the return spring is connected between the limit block and the limit groove, and the bottom of the limit block is connected to the air storage assembly.

[0013] In the above scheme, the limit block limits the downward pressing distance of the lower pressing plate before the foaming is completed, thereby avoiding the fixing component from being accidentally opened prematurely before the foaming is completed, and also avoiding the cutting of the fabric before the foaming is completed, which affects the production quality.

[0014] Preferably, the air storage assembly is connected to the lower mold, and the air storage assembly includes a push rod, a piston and an air storage hole. The air storage hole is opened at the top of the lower mold and has a U-shaped cross-section. The piston is connected to the air storage hole, and the push rod is connected to the top of the piston. A fixing hole is opened at the bottom of the upper mold, and the push rod passes through the fixing hole and cooperates with the bottom of the limit block.

[0015] In the above scheme, when the upper mold and the lower mold are closed and sealed, air will remain between the two molds. The gas discharged from the expansion inside the mold is stored through the air storage component to avoid excessive gas in the mold, which may cause the bubbles in the insole to be too large or too many, thereby reducing the strength and durability of the insole, thereby ensuring the production quality. At the same time, the air storage component cooperates with the limit component to avoid the fixing component being opened prematurely before the foaming is completed, thereby improving the foaming quality.

[0016] Preferably, the fixing assembly includes a fixing cylinder, a push rod and a protrusion, the fixing cylinder is connected to the front side of the upper mold, a slot is provided on the rear side of the fixing cylinder, the push rod is connected to the bottom of the pressure rod, the push rod is arranged in the fixing cylinder, the protrusion is connected to the front side of the lower mold, a movable cavity is provided inside the protrusion, a block is slidably connected inside the movable cavity, the block cooperates with the slot, a circular hole is provided on the top of the protrusion, the circular hole is connected to the movable cavity and cooperates with the push rod.

[0017] In the above scheme, when the upper mold and the lower mold are fitted together, the pressure rod is pressed down to make the slot on the rear side of the fixed tube engage with the card block to fix it. When the foaming is completed, it is pressed down again to drive the card block to move backward and separate from the fixed tube to release the fixation. The annular knife is driven to cut the fabric through the action of releasing the fixation, which simplifies the processing steps of the insole and improves production efficiency.

[0018] Preferably, a roller is connected to the rear side of the block, an arc groove and a straight groove are provided on the outer wall of the roller, the arc groove is connected to the straight groove, an extension rod is connected to the inner wall of the movable cavity, the extension rod is connected to the straight groove, and a compression spring is connected between the rear end of the roller and the inner wall of the movable cavity.

[0019] In the above scheme, the arc groove on the outer wall of the roller is engaged with the extension rod, thereby delaying the reset of the clamping block, thereby preventing the clamping block from being engaged with the clamping groove again before the lower pressure plate is lifted.

[0020] Preferably, two hinged rods are connected to the bottom of the lower pressure plate, the bottom ends of the hinged rods are connected to a rectangular plate, and the bottom of the rectangular plate is connected to a sliding block.

[0021] In the above scheme, the rectangular plate is driven downward by the hinged rod, and then the sliding block is driven downward by the rectangular plate to drive the annular knife to move downward as a whole, so as to avoid the annular knife from tilting when moving downward and increasing the wear of the annular knife due to friction with the inner wall of the cutting groove.

[0022] Preferably, two reinforcing plates are connected to the top of the rectangular plate, the reinforcing plates are cross-connected and connected to the diagonal lines of the rectangular plate, and the hinge rod is connected to the intersection of the two reinforcing plates.

[0023] In the above scheme, the strength of the rectangular plate is improved by the reinforcing plate, so as to avoid the middle part of the rectangular plate from being deformed due to stress, and at the same time, the force uniformity of the annular knife during downward pressure is improved.

[0024] Preferably, the cross section of the pressure rod is set to be Z-shaped, the pressure rod is hinged to the upper mold, the upper mold is hinged with a rotating plate, one end of the rotating plate is hinged to the pressure rod, and the other end is hinged to the lower pressure plate.

[0025] In the above scheme, the pressing rod and the rotating plate form two labor-saving levers, thereby increasing the pressure when pressing down, thereby achieving a labor-saving effect.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention solves the problem that after foaming is completed, it is necessary to cut the excess fabric on the top of the insole, which leads to a complicated production process and low production efficiency. When the foaming of the insole is completed, the fixing assembly is unlocked by pressing the pressure rod downward to fix the upper mold and the lower mold, and the annular knife is driven downward by the lower pressure plate to cut the fabric, thereby simplifying the production process of the insole and improving production efficiency.

[0028] 2. By setting up the air storage component, when the foaming raw material foams and expands, the gas inside the mold is squeezed into the air storage hole to avoid air interference causing the bubbles to be too large or too many bubbles to be generated, thereby ensuring the quality of the insole. At the same time, the gas in the air storage hole drives the push rod to move upward by lifting the piston, and then pushes the limit block to move, thereby releasing the limit block on the lower pressure plate, avoiding the lower pressure plate from moving downward to cut the fabric before the foaming is completed, thereby ensuring the foaming quality.

[0029] 3. By setting a rectangular plate and a hinged rod, since the downward moving trajectory of the lower pressure plate is an arc, the annular knife will tilt and rub against the inner wall of the cutting knife groove when moving downward, and thus it is easy to be worn. When the lower pressure plate moves downward, the rectangular plate is pushed downward by the hinged rod, so that the force point of the rectangular plate remains unchanged, and the downward moving trajectory of the rectangular plate is a straight line. The rectangular plate then pushes the slider to drive the annular knife to move downward, thereby preventing the annular knife from tilting and rubbing against the inner wall of the cutting knife groove and being worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the mold of the present invention when it is closed;

[0031] Figure 2 It is a schematic diagram of the overall structure of the mold of the present invention when it is opened;

[0032] Figure 3 It is a side view of the mold of the present invention when it is closed;

[0033] Figure 4 It is a cross-sectional structural schematic diagram of KK of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the gas storage component of the present invention;

[0035] Figure 6 It is a schematic diagram of the cross-sectional structure of the NN of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0037] Figure 8 It is a schematic diagram of the roller structure of the present invention;

[0038] Fig. 9 It is a schematic diagram of the rectangular plate structure of the present invention.

[0039] In the figure: 1, bottom plate; 2, lower pressure plate; 201, telescopic spring; 202, limiting hole; 203, hinge rod; 204, rectangular plate; 2041, reinforcing plate; 3, upper mold; 301, cutting knife groove; 302, limiting groove; 303, fixing hole; 304, rotating plate; 4, lower mold; 5, air storage assembly; 501, ejector rod; 502, piston; 503, air storage hole; 6, pressure rod; 7, cutting knife assembly; 70 1. Annular knife; 702. Sliding block; 8. Limiting assembly; 801. Limiting block; 802. Reset spring; 9. Fixing assembly; 901. Fixing cylinder; 9011. Slot; 902. Push rod; 903. Bump; 9031. Moving cavity; 9032. Block; 9033. Round hole; 9034. Roller; 90341. Arc groove; 90342. Straight groove; 9035. Extension rod; 9036. Compression spring. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, and combine the working state to make its structural features more detailed. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 9 The present invention provides a mold for making a foam insole, and the technical solution is as follows:

[0042] A mold for making a foam insole, referring to Figure 1 , Figure 2 and Figure 3 , including a bottom plate 1, a lower pressing plate 2, an upper mold 3 and a lower mold 4, the top of the lower mold 4 is connected to an air storage component 5, the upper mold 3 is connected to the bottom of the lower pressing plate 2, and a telescopic spring 201 is connected between the upper mold 3 and the lower pressing plate 2, the front side of the upper mold 3 is connected to a pressing rod 6, a cutter component 7 is installed inside the upper mold 3, the cutter component 7 is connected to the lower pressing plate 2, a limit position component 8 is connected between the lower pressing plate 2 and the upper mold 3, the upper mold 3, the lower mold 4 and the lower pressing plate 2 is connected to a fixing component 9 on the front side, and the lower pressing plate 2 drives the upper mold 3 to fit with the lower mold 4 through the pressing rod 6. At this time, the fixing component 9 fixes the upper mold 3 and the lower mold 4. Before the foaming is completed, the limiting component 8 limits the lower pressing plate 2 to move downward. During the foaming process, the insole releases the limiting component 8 on the lower pressing plate 2 by squeezing the air storage component 5. When the foaming is completed, the pressing rod 6 is continued to be pressed downward to move the lower pressing plate 2 downward and release the fixing of the fixing component 9. At the same time, the lower pressing plate 2 drives the cutting knife component 7 to move downward.

[0043] As an embodiment of the present invention, refer to Figure 4 and Figure 5 , two cutting grooves 301 are provided at the bottom of the upper mold 3, and the cutting knife assembly 7 is installed inside the cutting groove 301. The cutting knife assembly 7 includes an annular knife 701 and a slider 702. The annular knife 701 is slidably connected to the inside of the cutting groove 301. The cross section of the annular knife 701 is set to be T-shaped. Initially, the annular knife 701 is located inside the cutting groove 301, and the bottom is flush with the edge of the cutting groove 301. The slider 702 is connected to the top of the annular knife 701. The slider 702 passes through the cutting groove 301 and is connected to the lower pressing plate 2. When the foaming is completed, the lower pressing plate 2 drives the annular knife 701 to move downward by pushing the slider 702, and cuts the cloth. The cross section of the slider 702 is set to be L-shaped and arranged into two rectangles. The shape of the cutting groove 301 is similar to an ellipse. By designing the slider 702 to be L-shaped, the force area of ​​the annular knife 701 is avoided to be single, thereby improving the uniformity of the force, thereby improving the cutting effect.

[0044] As an embodiment of the present invention, refer to Figure 4 and Figure 6The limiting assembly 8 includes a limiting block 801 and a return spring 802. A limiting groove 302 is provided on the top of the upper mold 3. The cross section of the limiting block 801 is set to be L-shaped. The limiting block 801 is slidably connected to the inside of the limiting groove 302. A limiting hole 202 is provided at the bottom of the lower pressing plate 2. The limiting block 801 cooperates with the limiting hole 202. Initially, the limiting block 801 does not engage with the limiting hole 202, and directly contacts with the bottom of the lower pressing plate 2, thereby limiting the downward movement of the lower pressing plate 2 relative to the upper mold 3, so that the lower pressing plate 2 cannot drive the annular knife 701 to move downward before the insole foaming is completed, thereby avoiding cutting the fabric in advance when fixing. Cutting, thereby affecting the foaming quality, the reset spring 802 is connected between the limit block 801 and the limit groove 302, and the bottom of the limit block 801 is connected to the air storage component 5. When foaming is finished, the air storage component 5 pushes the limit block 801 to move, so that the top of the limit block 801 is aligned with the limit hole 202. When foaming is finished, the lower pressure plate 2 moves downward to make the limit block 801 engage with the limit hole 202, so that the lower pressure plate 2 can move downward relative to the lower mold 4, thereby driving the annular knife 701 to move downward to cut the cloth. When cutting is finished, the lower mold 4 is reset under the push of the telescopic spring 201, and then the limit plate is reset under the push of the reset spring 802.

[0045] As an embodiment of the present invention, refer to Figure 4 and Figure 5 The gas storage component 5 includes a push rod 501, a piston 502 and a gas storage hole 503. The gas storage component 5 is connected to the lower mold 4. The piston 502 is connected to the gas storage hole 503. The push rod 501 is connected to the top of the piston 502. A fixing hole 303 is opened at the bottom of the upper mold 3. The push rod 501 is sleeved through the fixing hole 303 to avoid the upper mold 3 and the lower mold 4 from deviating during foaming. The push rod 501 passes through the fixing hole 303 and cooperates with the bottom of the limit block 801. The gas storage hole 503 is opened at the top of the lower mold 4, and the cross section is U When the foaming raw material is injected into the mold and begins to foam and expand, the gas in the mold is squeezed into the air storage hole 503, thereby lifting the piston 502. When the piston 502 moves upward, it will drive the push rod 501 to move upward. When the push rod 501 moves upward, it will push the limit block 801 to move, so that the top of the limit block 801 is aligned with the limit hole 202, thereby releasing the limit of the limit block 801 on the lower pressure plate 2. At the same time, the gas is squeezed into the air storage hole to prevent the insole from being disturbed by air when expanding, resulting in excessive bubbles or excessive bubbles, thereby ensuring the quality of the insole.

[0046] As an embodiment of the present invention, refer to Figure 7 and Figure 8The fixing assembly 9 includes a fixing cylinder 901, a push rod 902 and a protrusion 903. The fixing cylinder 901 is connected to the front side of the upper mold 3. A card slot 9011 is provided on the rear side of the fixing cylinder 901. The push rod 902 is connected to the bottom of the pressure rod 6. The push rod 902 is arranged in the fixing cylinder 901. The protrusion 903 is connected to the front side of the lower mold 4. A moving cavity 9031 is provided inside the protrusion 903. A card block 9032 is slidably connected inside the moving cavity 9031. The lower pressing plate 2 is driven downward by the pressure rod 6 to fit the upper mold 3 with the lower mold 4. At the same time, the fixing cylinder 901 moves downward to push the card block 9032 into the moving cavity 9031 first, and the card block 903 2 cooperates with the card slot 9011, and then continues to move the card block 9032 downward to insert it into the card slot 9011, and fixes the upper mold 3 and the lower mold 4. A round hole 9033 is opened on the top of the convex block 903, and the round hole 9033 is connected with the moving cavity 9031 and cooperates with the push rod 902. When the foaming is finished, hold the pressure rod 6 and continue to press downward to drive the push rod 902 to move downward, so that the push rod 902 passes through the round hole 9033 to push the card block 9032 to move backward, so that the card block 9032 is separated from the card slot 9011 to release the fixation. When the fixation is released, the lower pressure plate 2 will drive the annular knife 701 to move downward to cut the cloth, thereby simplifying the production process of the insole and improving the production efficiency.

[0047] As an embodiment of the present invention, refer to Figure 7 and Figure 8 The rear side of the block 9032 is connected to a roller 9034, and the outer wall of the roller 9034 is provided with an arc groove 90341 and a straight groove 90342, and the arc groove 90341 is connected to the straight groove 90342. The inner wall of the moving cavity 9031 is connected to an extension rod 9035, and the extension rod 9035 is connected to the straight groove 90342. Initially, the extension rod 9035 is connected to the straight groove 90342. When the block 9032 moves backward, the extension rod 9035 is in the straight groove 9034. 2 slides and moves in the arc groove 90341. A compression spring 9036 is connected between the rear end of the roller 9034 and the inner wall of the moving cavity 9031. When the block 9032 is reset under the push of the compression spring 9036, the extension rod 9035 slides in the arc groove 90341. Because the length of the arc groove 90341 is greater than the straight groove 90342, the reset time of the block 9032 is extended to prevent the block 9032 from being engaged with the groove 9011 again before the lower pressure plate 2 is lifted.

[0048] As an embodiment of the present invention, refer to Figure 7The cross section of the pressure rod 6 is set to be Z-shaped. The pressure rod 6 is hinged to the upper mold 3. The upper mold 3 is hinged with a rotating plate 304. One end of the rotating plate 304 is hinged to the pressure rod 6, and the other end is hinged to the lower pressure plate 2. The hinge between the pressure rod 6 and the upper mold 3 is close to the rotating plate 304, and the hinge between the rotating plate 304 and the upper mold 3 is close to the lower pressure plate 2, so that the pressure rod 6 and the rotating plate 304 form two labor-saving levers, thereby increasing the pressure when pressing down, thereby achieving a labor-saving effect.

[0049] As an embodiment of the present invention, refer to Fig. 9 Two hinged rods 203 are connected to the bottom of the lower pressure plate 2, and a rectangular plate 204 is connected to the bottom end of the hinged rod 203. The bottom of the rectangular plate 204 is connected to the slider 702. When the lower pressure plate 2 moves downward, the moving trajectory is an arc. When the annular knife 701 moves downward, one end is first subjected to force, and then the whole is subjected to force. When one end is subjected to force, the annular knife 701 will tilt and rub against the inner wall of the cutting groove 301, which is easy to be worn. When the lower pressure plate 2 moves downward, the rectangular plate 204 is pushed by the hinged rod 203 to drive the slider 702 to move downward, so that the force point of the rectangular plate 204 remains unchanged, and then the movable annular knife 701 will not tilt when moving downward, thereby avoiding the wear of the annular knife 701 and the inner wall of the cutting groove 301.

[0050] As an embodiment of the present invention, refer to Fig. 9 Two reinforcing plates 2041 are connected to the top of the rectangular plate 204. The reinforcing plates 2041 are cross-connected and connected to the diagonal of the rectangular plate 204. The hinge rod 203 is connected to the intersection of the two reinforcing plates 2041. Because the rectangular plate 204 is subjected to force at one point, it is easy to be concave and deformed. The reinforcing plate 2041 can improve the overall strength of the rectangular plate 204 and avoid the middle part of the rectangular plate 204 from being concave and deformed. At the same time, it also improves the force uniformity of the annular knife 701 when pressing down.

[0051] Working principle: By adding an annular knife 701 inside the upper mold 3, when the foaming is completed, the insole is cut by releasing the fixing action, thereby solving the problem of needing to punch and cut the insole after the foaming is completed.

[0052] Specifically, the foaming raw material is first injected into the top of the upper mold 4, and then the cloth is attached to the bottom of the upper mold 3 to completely cover the bottom of the lower mold 4, and then the lower pressing plate 2 is driven downward by the pressing rod 6. When the lower pressing plate 2 moves downward, it will drive the upper mold 3 to move downward and fit the lower mold 4. When fitting, the ejector pin 501 will be inserted into the fixing hole 303, so as to avoid the displacement between the upper mold 3 and the lower mold 4 during foaming. At the same time, the fixing cylinder 901 moves downward to insert the clamping block 9032 into the clamping groove 9011, so as to fix the upper mold 3 and the lower mold 4;

[0053] During the foaming process, when the upper mold 3 and the lower mold 4 are closed and sealed, air will remain between the two molds. When the insole expands in the mold, the gas will be squeezed into the air storage hole 503 to lift the piston 502. When the piston 502 moves upward, it drives the push rod 501 to move upward. The upward movement of the push rod 501 will push the limit block 801 to move so that it is aligned with the limit hole 202, so that the lower pressing plate 2 can move downward relative to the upper mold 3;

[0054] When foaming is finished, hold the pressure rod 6 and continue to press downward to move the lower pressure plate 2 downward. When the lower pressure plate 2 moves downward, it drives the annular knife 701 to move downward to cut the cloth. At the same time, the push rod 902 passes through the circular hole 9033 to push the block 9032 to move backward, so that the block 9032 is separated from the slot 9011 and the fixation is released.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold for making a foam insole, comprising a base plate (1) and a lower pressing plate (2), characterized in that: The invention also comprises an upper mold (3) and a lower mold (4), wherein the top of the lower mold (4) is connected to an air storage assembly (5), the upper mold (3) is connected to the bottom of the lower pressing plate (2), and a telescopic spring (201) is connected between the upper mold (3) and the lower pressing plate (2), the front side of the upper mold (3) is connected to a pressing rod (6), a cutting knife assembly (7) is installed inside the upper mold (3), the cutting knife assembly (7) is connected to the lower pressing plate (2), a limiting assembly (8) is connected between the lower pressing plate (2) and the upper mold (3), and the front side of the upper mold (3), the lower mold (4) and the lower pressing plate (2) are connected to each other. The side is connected with a fixing component (9), and the lower pressing plate (2) drives the upper mold (3) and the lower mold (4) to fit together through the pressing rod (6). At this time, the fixing component (9) fixes the upper mold (3) and the lower mold (4). Before the foaming is completed, the limiting component (8) limits the lower pressing plate (2) from moving downward. During the foaming process, the insole releases the limiting effect of the limiting component (8) on the lower pressing plate (2) by squeezing the air storage component (5). When the foaming is completed, the pressing rod (6) is continuously pressed downward to move the lower pressing plate (2) downward and release the fixing of the fixing component (9). At the same time, the lower pressing plate (2) drives the cutting knife component (7) to move downward.

2. The mold for making a foam insole according to claim 1, characterized in that: Two cutting grooves (301) are provided at the bottom of the upper mold (3), and the cutting knife assembly (7) is installed inside the cutting knife groove (301). The cutting knife assembly (7) comprises an annular knife (701) and a sliding block (702). The annular knife (701) is slidably connected to the inside of the cutting knife groove (301), and the cross section of the annular knife (701) is set to be T-shaped. The sliding block (702) is connected to the top of the annular knife (701), and the sliding block (702) passes through the cutting knife groove (301) and is connected to the lower pressing plate (2).

3. The mold for making a foam insole according to claim 2, characterized in that: The cross section of the slider (702) is set to be L-shaped, and is arranged into two rectangles with the bending point as the vertex.

4. The mold for making a foam insole according to claim 2, characterized in that: The limit assembly (8) comprises a limit block (801) and a return spring (802); a limit groove (302) is provided at the top of the upper mold (3); the cross section of the limit block (801) is set to be L-shaped; the limit block (801) is slidably connected to the inside of the limit groove (302); a limit hole (202) is provided at the bottom of the lower pressure plate (2); the limit block (801) cooperates with the limit hole (202); the return spring (802) is connected between the limit block (801) and the limit groove (302); and the bottom of the limit block (801) is connected to the air storage assembly (5).

5. The mold for making a foam insole according to claim 4, characterized in that: The gas storage assembly (5) is connected to the lower mold (4), and comprises a push rod (501), a piston (502) and a gas storage hole (503). The gas storage hole (503) is opened at the top of the lower mold (4) and has a U-shaped cross section. The piston (502) is connected to the gas storage hole (503). The push rod (501) is connected to the top of the piston (502). A fixing hole (303) is opened at the bottom of the upper mold (3). The push rod (501) passes through the fixing hole (303) and cooperates with the bottom of the limit block (801).

6. The mold for making a foam insole according to claim 1, characterized in that: The cross section of the pressure rod (6) is set to be Z-shaped. The pressure rod (6) is hinged to the upper mold (3). The upper mold (3) is hinged with a rotating plate (304). One end of the rotating plate (304) is hinged to the pressure rod (6) and the other end is hinged to the lower pressure plate (2).

7. The mold for making a foam insole according to claim 5, characterized in that: The fixing assembly (9) comprises a fixing cylinder (901), a push rod (902) and a protrusion (903); the fixing cylinder (901) is connected to the front side of the upper mold (3); a slot (9011) is provided on the rear side of the fixing cylinder (901); the push rod (902) is connected to the bottom of the pressure rod (6); the push rod (902) is arranged in the fixing cylinder (901); the protrusion (903) is connected to the front side of the lower mold (4); a movable cavity (9031) is provided inside the protrusion (903); a block (9032) is slidably connected inside the movable cavity (9031); the block (9032) cooperates with the slot (9011); a round hole (9033) is provided on the top of the protrusion (903); the round hole (9033) is communicated with the movable cavity (9031) and cooperates with the push rod (902).

8. The mold for making a foam insole according to claim 7, characterized in that: The rear side of the block (9032) is connected to a roller (9034), the outer wall of the roller (9034) is provided with an arc groove (90341) and a straight groove (90342), the arc groove (90341) is connected to the straight groove (90342), the inner wall of the movable cavity (9031) is connected to an extension rod (9035), the extension rod (9035) is connected to the straight groove (90342), and a compression spring (9036) is connected between the rear end of the roller (9034) and the inner wall of the movable cavity (9031).

9. The mold for making a foam insole according to claim 2, characterized in that: The bottom of the lower pressure plate (2) is connected to two hinged rods (203), the bottom ends of the hinged rods (203) are connected to a rectangular plate (204), and the bottom of the rectangular plate (204) is connected to a slider (702).

10. The mold for making a foam insole according to claim 9, characterized in that: Two reinforcing plates (2041) are connected to the top of the rectangular plate (204); the reinforcing plates (2041) are cross-connected and diagonally connected to the rectangular plate (204); and the hinge rod (203) is connected to the intersection of the two reinforcing plates (2041).

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