Vamp shaping jig

Abstract

The utility model relates to a vamp shaping jig in the technical field of shoe jigs, which comprises an upper die and a lower die, the surface of the upper die is provided with a raised die core, the surface of the lower die is provided with a die cavity, the die core comprises a cutting ring, the inside of the die cavity is provided with an air hole, and the inside of the lower die is connected with an air groove matched with the air hole; when an external vacuum machine connecting pipeline is connected with the air groove, a vacuum state is formed in the air groove in an air exhaust mode, air holes form adsorption force through the pressure, and the shoe materials in the mold cavity can be conveniently positioned through the acting force. The condition that the materials deviate during die assembly or cutting is avoided; besides, a mode of synchronous operation of die assembly and cutting is adopted in the structure, so that working procedures are reduced, cutting is completed through pressure of die assembly, meanwhile, trimming and edge pressing are performed through a fodder chopper, burrs or burrs of materials are reduced, and meanwhile, the working efficiency and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shoe jig technical field, especially a vamp shaping jig. BACKGROUND

[0002] Jig is a tool or device used for fixing, supporting or positioning workpieces, mainly used in the fields of machining, assembly and detection. The vamp shaping jig is a process device used for fixing and shaping the vamp to ensure that the vamp maintains a specific shape and size during processing.

[0003] The existing reference announcement number CN217565104U of Chinese patent discloses a type of pressing jig for vamp shaping, which relates to the manufacturing technology field of pressing jig, including jig base, pressure bearing unit and heating unit. The rotating shaft base is fixedly connected to the upper side of the jig base, and the rotating shaft base is movably connected to the rear side of the cover plate through the cover plate rotating shaft. The pressure bearing unit includes a moving slide rod, a pressure bearing block, a lower pressing plate, an extension rod and a spring. The pressure bearing block is fixedly connected with two rows of extension rods, and the bottom of the lower pressing plate is fixedly connected with the top of the extension rod. The heating unit includes a heating net, a supporting rod and an upper pressing plate. The bottom of the supporting rod is fixedly connected to the middle of the lower surface of the cover plate, and the heating net is embedded in the upper pressing plate. The utility model can replace the corresponding mold according to different shoe types, and can also use the heating function to better shape the vamp and improve the production efficiency.

[0004] Although the patent has the shaping effect, it does not have the positioning function. When the pressing jig is pressed, a certain air pressure will be generated during the mold closing process. Since the structure does not have the positioning function, the air pressure may cause the vamp to deviate from the specified placement position, resulting in different shapes of the vamp product after forming. When in use, the air positioning structure needs to be processed and improved, which increases the process and reduces the work efficiency. Therefore, the present inventor proposes a vamp shaping jig to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model is aimed at providing a technical solution to solve the above problems.

[0006] The upper of a shoe is shaped by a jig, which comprises an upper die and a lower die, the surface of the upper die is provided with a convex die core, and the surface of the lower die is provided with a die cavity matched with the die core, the die cavity is concave, the highest point of the die core is flush with the surface of the die cavity, and the die core and the die cavity are in clearance fit so as to leave a proper gap for molding; the die core comprises a cutting ring, which is installed on the outer side of the die core and is consistent with the shape of the die core, and the surface of the cutting ring is a cutter for assisting the cutting of the upper of the shoe when the die is closed; the inside of the die cavity is provided with an air hole, and the inside of the lower die is connected with an air groove matched with the air hole, the air groove penetrates the surface of the lower die and is communicated with the air hole;

[0007] When the external vacuum machine is connected with the air groove through the pipeline, the air groove is in a vacuum state by air extraction, the air groove is communicated with the air hole, the air pressure in the air groove is not uniform with the gas in the die cavity, the air hole is formed by the pressure to form a suction force, which is convenient for positioning the material in the die cavity and avoids the deviation of the material when the die is closed or cut, the structure is in synchronous operation with the die closing and cutting, reduces the process, completes the cutting through the pressure of the die closing, reduces the burrs and edges of the material through the cutter trimming, and improves the work efficiency and production efficiency.

[0008] Further, the die core comprises a pressing block, a top block and a pressure relief groove, the pressure relief groove is located between the pressing block and the top block, and the height of the pressing block is consistent with that of the top block; the consistent height of the pressing block and the top block can effectively ensure the stability of the die core during pressing, reduce the deviation and vibration caused by the height difference, and improve the pressing efficiency and product quality; meanwhile, the structure is conducive to ensuring the correct position of the pressure relief groove and avoiding uneven pressure relief caused by the inconsistent height of the pressing block and the top block.

[0009] Further, the surface of one end of the upper die and the lower die is a parting surface, the surface of the die core is provided with a plurality of exhaust grooves for exhausting the gas generated when the die is closed, the exhaust grooves are linearly arranged on the surface of the die core, and the distance between adjacent two exhaust grooves is equally set; the equally set structure helps to improve the exhaust efficiency of the jig, maintain the product forming quality, and facilitate the cleaning and maintenance of the jig.

[0010] Further, the inside of the die cavity is provided with a plurality of anti-skid lines for increasing the contact points, the anti-skid lines are V-shaped, and the distance between adjacent two anti-skid lines is equally set; the adjacent two anti-skid lines can effectively improve the contact stability of the shoe material and the inside of the die cavity, prevent the material from sliding in the die cavity, and facilitate the maintenance and removal; the V-shaped anti-skid lines can effectively increase the friction, improve the contact area and increase the contact points, thereby reducing the sliding.

[0011] Further, the surface of the lower mold is provided with an exhaust structure for assisting in exhausting gas during pressing, the exhaust structure comprising an exhaust groove and a shunt, the shunt being V-shaped, one end of the shunt being in communication with the exhaust groove, the other end of the shunt being in communication with the inside of the mold cavity, and one end of the exhaust groove extending beyond the surface of the lower mold; the exhaust structure assists in exhausting gas during mold closing, and the gas generated during mold closing can cause the shoe material placed in the mold cavity to slightly swing, leading to uneven cutting and resulting in different sizes after mold closing; the exhaust structure assists in shunting and pressure relief of the gas during mold closing, reducing the influence of the wind pressure of the gas on the position of the material.

[0012] Further, the surface of the lower mold is provided with an exhaust structure for assisting in exhausting gas during pressing, the exhaust structure comprising an exhaust groove and a shunt, the shunt being V-shaped, one end of the shunt being in communication with the exhaust groove, the other end of the shunt being in communication with the inside of the mold cavity, and one end of the exhaust groove extending beyond the surface of the lower mold; the exhaust structure assists in exhausting gas during mold closing, and the gas generated during mold closing can cause the shoe material placed in the mold cavity to slightly swing, leading to uneven cutting and resulting in different sizes after mold closing; the exhaust structure assists in shunting and pressure relief of the gas during mold closing, reducing the influence of the wind pressure of the gas on the position of the material.

[0013] The one end of the plug extends into the inside of the gas groove, and the surface of the plug is tightly fitted with the surface of the lower mold to ensure the sealing property, avoiding the situation that the inside of the gas groove is evacuated to form a vacuum state while external oxygen is supplied, thereby reducing the adsorption pressure of the air hole; the raised portion of the plug is connected with the gas groove in a threaded manner, and this connection manner improves the reliability of the connection and facilitates future maintenance and replacement.

[0014] Compared with the prior art, the utility model has the advantages that the shoe material is positioned by pressure, when the pipeline of the external vacuum machine is connected with the gas groove, the inside of the gas groove is formed in a vacuum state by means of air extraction, the gas groove is in communication with the air hole, the air pressure in the inside of the gas groove is not uniform with the gas in the mold cavity, the air hole is formed in adsorption force by pressure, this force is convenient for positioning the shoe material in the inside of the mold cavity, and the material is prevented from deviating during mold closing or cutting;

[0015] In addition, the structure adopts a synchronous operation mode of mold closing and cutting, reduces the working procedure, completes cutting by the pressure of mold closing, cuts the edge by the cutting knife, reduces burrs and burrs of the material, and improves work efficiency and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an exploded view of a vamp shaping jig;

[0017] Figure 2 It is a perspective view of an upper mold in a vamp shaping jig;

[0018] Figure 3 It is a front view of an upper mold in a vamp shaping jig;

[0019] Figure 4 It is a perspective view of a cutting ring in a vamp shaping jig;

[0020] Figure 5 is a perspective view of a lower mold of a vamp shaping jig;

[0021] Figure 6 is a front view of a lower mold of a vamp shaping jig;

[0022] In the figure: upper mold-1, lower mold-2, mold core-3, mold cavity-4, cutting ring-5, cutter-6, air hole-7, air groove-8, pressing block-9, top block-10, pressure relief groove-11, parting surface-12, exhaust groove-13, anti-slip pattern-14, exhaust groove-15, distribution channel-16, plug-17. DETAILED DESCRIPTION

[0023] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0024] In this embodiment, please refer to Figures 1-6 , a vamp shaping jig in specific implementation, including upper mold 1 and lower mold 2, the surface of the upper mold 1 is equipped with the protruding mold core 3, the surface of the lower mold 2 is equipped with the mold cavity 4 used in pairs with the mold core 3, the mold cavity 4 is concave structure, the highest point of the mold core 3 is flush with the surface of the mold cavity 4, the mold core 3 and the mold cavity 4 are gap fit, so that there is appropriate allowance when closing to facilitate molding, the mold core 3 includes cutting ring 5, the cutting ring 5 is installed on the outer side of the mold core 3, the cutting ring 5 is consistent with the shape of the mold core 3, the surface of the cutting ring 5 is cutter 6 used to assist the cutting of vamp cloth when closing, the inside of the mold cavity 4 is equipped with air hole 7, the inside of the lower mold 2 is connected with air groove 8 used in pairs with air hole 7, air groove 8 penetrates the surface of the lower mold 2, and is communicated with air hole 7;

[0025] When the external vacuum machine connecting pipeline is connected with air groove 8, the vacuum state is formed in air groove 8 by adopting the air extraction mode, air groove 8 is communicated with air hole 7, the air pressure in air groove 8 is not uniform with the gas in the mold cavity 4, the adsorption force is formed in air hole 7 by pressure, the force is convenient for the positioning of shoe material in the mold cavity 4, avoids the deviation of material when closing or cutting, the structure adopts the synchronous operation mode of closing and cutting, reduces the process, completes the cutting by the pressure of closing, reduces the burrs or burrs of material at the same time by trimming the pressing edge through cutter 6, improves the work efficiency and production efficiency.

[0026] The mold core 3 includes a pressing block 9, a top block 10, and a pressure relief groove 11 located between the pressing block 9 and the top block 10, and the height of the pressing block 9 and the top block 10 is consistent; the consistent height of the pressing block 9 and the top block 10 can effectively ensure the stability of the mold core 3 during pressing, reduce the deviation and vibration caused by the height difference, and improve the pressing efficiency and product quality; at the same time, the structure is beneficial to ensure the correct position of the pressure relief groove 11, and avoid the problem of uneven pressure relief caused by the inconsistent height of the pressing block 9 and the top block 10.

[0027] Further, the surface of one end of the upper die 1 and the lower die 2 is a parting surface 12, and the surface of the mold core 3 is provided with a plurality of exhaust grooves 13 for exhausting gas generated during clamping; the exhaust grooves 13 are linearly arranged on the surface of the mold core 3, and the distance between adjacent two exhaust grooves 13 is equally set; the equally set structure helps to improve the exhaust efficiency of the jig, maintain the product forming quality, and facilitate the cleaning and maintenance of the jig.

[0028] The inside of the mold cavity 4 is provided with a plurality of anti-skid lines 14 for increasing contact points, the anti-skid lines 14 are V-shaped, and the distance between adjacent two anti-skid lines 14 is equally set; the adjacent two anti-skid lines 14 can effectively improve the contact stability of the shoe material and the inside of the mold cavity 4, prevent the material from sliding in the mold cavity 4, and facilitate maintenance and removal; and the V-shaped anti-skid lines 14 can effectively increase the friction, improve the contact area and increase the contact points, thereby reducing the occurrence of sliding.

[0029] The surface of the lower die 2 is provided with an exhaust structure for assisting gas exhaust during pressing, the exhaust structure includes an exhaust groove 15 and a shunt 16, the shunt 16 is V-shaped, one end of the shunt 16 is communicated with the exhaust groove 15, the other end of the shunt 16 is communicated with the inside of the mold cavity 4, and one end of the exhaust groove 15 extends beyond the surface of the lower die 2; the structure is used to assist gas exhaust, and the gas generated during clamping of the upper die 1 and the lower die 2 may cause the shoe material placed in the mold cavity 4 to slightly swing, resulting in uneven cutting, thereby causing size difference after clamping; the exhaust structure can assist gas shunting and pressure relief during clamping, and reduce the position influence of the air pressure of the gas on the material.

[0030] The surface of the lower die 2 is connected with a plug 17 for plugging the gas groove 8, the plug 17 is convex, one end of the plug 17 extends into the inside of the gas groove 8, the surface of the plug 17 is attached to the surface of the lower die 2, and the convex part of the plug 17 is screw-connected with the gas groove 8;

[0031] The one end of the plug 17 is deeply into the air groove 8, the surface of which is tightly matched with the surface of the lower mold 2 to ensure the sealing, avoid the external oxygen supply when the air in the air groove 8 is evacuated to form a vacuum, thereby reducing the adsorption pressure of the air hole 7, the convex part of the plug 17 is connected with the air groove 8 in a threaded mode, the connecting mode improves the reliability of the connection, and is convenient for future maintenance and replacement.

[0032] The design points of the utility model lie in: adopting pressure to position the shoe material, when the external vacuum machine connecting pipeline is connected with the air groove 8, the air groove 8 is formed in a vacuum state by adopting the air extraction mode, the air groove 8 is communicated with the air hole 7, the air pressure in the air groove 8 is not uniform with the gas in the mold cavity 4, the air hole 7 is formed in an adsorption force by pressure, the force is convenient for the positioning of the shoe material in the mold cavity 4, avoids the material deviation when the mold is closed or cut;

[0033] In addition, the structure adopts the synchronous operation mode of mold closing and cutting, reduces the process, completes the cutting through the mold closing pressure, simultaneously trims the edge through the guillotine cutter 6, reduces the burrs, flanges or burrs of the material, and improves the work efficiency and production efficiency.

[0034] The above content is further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or replacements can be made, which should be regarded as the protection range of the utility model.

Claims

1. An upper shaping fixture comprising an upper mold and a lower mold, characterized in that: The surface of the upper die is provided with a convex mold core, and the surface of the lower die is provided with a mold cavity matched with the mold core. The mold cavity is concave, the highest point of the mold core is flush with the surface of the mold cavity, the mold core and the mold cavity are gap-fitted, the mold core includes a cutting ring installed on the outer side of the mold core, the cutting ring is consistent with the shape of the mold core, the surface of the cutting ring is a cutter for assisting the cutting of the vamp cloth when the mold is closed, the inside of the mold cavity is provided with an air hole, and the inside of the lower die is connected with an air groove matched with the air hole. The air groove penetrates the surface of the lower die and communicates with the air hole.

2. An upper shaping fixture according to claim 1, wherein: The mold core includes a pressing block, a top block and a pressure relief groove, and the pressure relief groove is located between the pressing block and the top block.

3. An upper shaping fixture according to claim 1, wherein: The surface of the upper die and the surface of one end of the lower die are both parting surfaces, the surface of the mold core is provided with a plurality of exhaust grooves for exhausting gas generated when the mold is closed, the exhaust grooves are linearly arranged on the surface of the mold core, and the distance between the adjacent two exhaust grooves is equally set.

4. An upper shaping fixture according to any one of claims 1-3, characterized in that: The inside of the mold cavity is provided with a plurality of anti-skid lines for increasing the contact points, the anti-skid lines are V-shaped, and the distance between the adjacent two anti-skid lines is equally set.

5. An upper shaping fixture according to any one of claims 1-3, characterized in that: The surface of the lower die is provided with an exhaust structure for assisting the exhaust of gas when pressing, the exhaust structure includes an exhaust groove and a shunt, the shunt is V-shaped, one end of the shunt communicates with the exhaust groove, the other end of the shunt communicates with the inside of the mold cavity, and one end of the exhaust groove extends beyond the surface of the lower die.

6. An upper shaping fixture according to any one of claims 1-3, characterized in that: The surface of the lower die is connected with a plug for plugging the air groove, the plug is convex, one end of the plug extends into the inside of the air groove, the surface of the plug is attached to the surface of the lower die, and the convex part of the plug is screw-connected with the air groove.

Images