Forming die for producing inner container of electric cooker

Abstract

The forming die comprises a U-shaped groove frame, symmetrical moving dies, an upper die cover and a male die block, parallel sliding guide rods are arranged in the U-shaped groove frame, the moving dies are connected with the sliding guide rods in a sliding mode through sliding guide blocks, a bidirectional threaded rod drives the moving dies to be opened and closed synchronously, and the two ends of the bidirectional threaded rod are connected with the U-shaped groove frame and a driving device respectively. The upper die cover is controlled to lift through a hydraulic rod, and a bottom male die block and the movable die form a die cavity. The utility model has the advantages of stable structure and high mold closing precision, and effectively prolongs the service life of the mold.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of liner forming technology, and specifically relates to a forming die for electric rice cooker liner production. BACKGROUND

[0002] With the rapid development of the household appliance industry, as a necessary appliance in modern kitchens, the manufacturing process of the liner of an electric rice cooker directly affects the service performance and service life of the product. Traditional electric rice cooker liner forming mostly adopts stamping or casting process, but the following technical problems still exist in the actual production process:

[0003] 1. Insufficient die precision: the guide structure of the traditional die is simple, and deviation easily occurs when the die is closed, which leads to uneven wall thickness of the liner, affecting the uniformity of heating and service life.

[0004] 2. Poor movement stability: the drive of the moving die mostly adopts unilateral screw or hydraulic direct pushing, which easily causes the two sides of the die to be out of sync, the symmetry of the forming cavity is poor, and the product qualification rate is low.

[0005] 3. Large rigid impact: the upper die cover lacks a buffering mechanism when it is pressed down, and long-term impact easily leads to die deformation or part wear, increasing maintenance costs.

[0006] 4. Low transmission efficiency: the drive mode of ordinary motor direct connection with the screw easily produces a return gap, and cannot be self-locked, which may cause the die set to loosen during high-pressure forming.

[0007] To solve the above problems, some existing dies attempt to use double-screw synchronous drive or spring buffering structure, but still have the following limitations:

[0008] The bidirectional threaded rod lacks middle support and is easily bent and deformed at long span, affecting the movement precision of the moving die;

[0009] The buffering mechanism is mostly designed with a simple spring, and the rebound speed is uncontrollable, which easily causes the upper die cover to vibrate or the product to stick to the die;

[0010] The drive system does not integrate a self-locking function, and it is difficult to adapt to the needs of high-precision continuous production.

[0011] Therefore, a new type of electric rice cooker liner forming die is needed, which optimizes the guide, drive and buffering system, realizes high-precision and high-stability liner forming, and improves the durability and production efficiency of the die. UTILITY MODEL CONTENTS

[0012] In view of the above deficiencies in the prior art, the utility model aims to provide a forming die for electric rice cooker liner production with good stability, improved product production precision and prolonged equipment service life.

[0013] The utility model discloses a technical scheme adopted for realizing the above-mentioned purpose is: a forming die for electric rice cooker liner production, including U type groove frame, mobile die, upper die cover, male module, wherein the U type groove frame is the main support frame of mould, two groups of mutually parallel slide guide rods are fixedly connected in the U type groove frame, the slide guide rod provides linear guide path for mobile die, two groups of symmetrical mobile die are slidably connected in the U type groove frame between the slide guide rod, the inside of mobile die constitutes the main cavity side wall of liner forming, the both sides of mobile die are fixedly connected with slide guide block respectively, the slide guide block is penetrated with slide guide hole, the slide guide rod is slidably connected in the slide guide hole respectively, the both sides of mobile die are rotatably connected with two -way screw rod respectively, two -way screw rod can convert rotary motion into the linear opening and closing motion of two groups of mobile die, one end of two -way screw rod is rotatably connected in the inner wall of U type groove frame, the other end of two -way screw rod is connected with driving device after going out U type groove frame, the driving device provides stable power for the rotation of two -way screw rod, the mobile die of slide guide block top is fixedly connected with driving block respectively, the driving block is penetrated with threaded hole, the threaded hole is screw connected with two -way screw rod respectively, the upper end of two groups of mobile die is connected with upper die cover, the lower end middle part of upper die cover is fixedly connected with male module, the male module is used for shaping the shape of liner inner wall, the male module and two groups of mobile die form model cavity between, and the plastic forming of liner whole is completed through model cavity, the upper end of upper die cover is fixedly connected with fixed frame, the four corners of fixed frame are fixedly connected with hydraulic rod respectively, the other end of hydraulic rod is fixedly connected with U type groove frame, the hydraulic rod can drive upper die cover and male module to move up and down through fixed frame, and provides power for the stamping forming of liner.

[0014] In the above technical scheme, the lower end of the U-shaped groove frame is fixedly connected with a plurality of supporting blocks.

[0015] In the above technical scheme, the middle part of the two sides of the U-shaped groove frame is fixedly connected with a fixed rod, the upper end of the fixed rod is fixedly connected with a guide rod, a guide hole is formed in the fixed frame, the guide rod is slidably connected in the guide hole, a helical spring is sleeved and connected on the guide rod of the upper end of the fixed rod, the lower end of the helical spring is fixedly connected with the fixed rod, the upper end of the helical spring is fixedly connected with a sliding sleeve, the sliding sleeve is sleeved and connected on the guide rod, a rubber sleeve is fixedly connected on the inner wall of the sliding sleeve, and the rubber sleeve is frictionally connected with the guide rod.

[0016] In the above technical scheme, the upper end of the fixed rod is fixedly connected with a rotating shaft block on one side, the middle part of the two-way screw rod is rotatably connected on the rotating shaft block respectively, the U-shaped groove frame is fixedly connected with a connecting block in the fixed rod on one side respectively, and the slide guide rod is fixedly connected on the connecting block respectively.

[0017] In the above technical scheme, the driving device comprises a device box, a worm wheel, a worm, a transmission shaft, a first bevel gear, a second bevel gear and a driving motor, the device box is fixedly connected to one side of the outer end of the U-shaped groove frame, the bidirectional threaded rods are rotatably connected in the device box after penetrating through the U-shaped groove frame, one end of each of the bidirectional threaded rods in the device box is fixedly connected with the worm wheel, one side of the worm wheel is meshingly connected with the worm, the worms are fixedly connected to the transmission shaft, the transmission shaft is rotatably connected in the device box, the middle part of the transmission shaft is fixedly connected with the first bevel gear, the first bevel gear is meshingly connected with the second bevel gear, the second bevel gear is fixedly connected to the end of the rotating shaft of the driving motor, and the driving motor is fixedly connected to one side of the device box.

[0018] The utility model discloses the beneficial effect:

[0019] 1. Improve the mold precision and product consistency: the utility model discloses the structure design of bidirectional threaded rod cooperation middle part pivot block support, effectively reduce the bending deformation of long span threaded rod, ensure that two groups of mobile mode realize high-precision synchronous opening and closing under the constraint of slide guide rod. The precise cooperation of the guide rod and the fixed frame further ensures the vertical motion trajectory of the upper mold cover, reduces the size error of the cavity formed by the male module and the mobile mode, and completely solves the problem of uneven inner liner wall thickness caused by the guide deviation of the traditional mold.

[0020] 2. Enhance the stability and reliability of the transmission: the driving device combined with the worm wheel, the worm and the bevel gear not only realizes the synchronous rotation and self-locking function of the bidirectional threaded rod, but also avoids the return gap of the traditional screw transmission. The middle part of the slide guide rod is rigidly connected to the U-shaped groove frame through the connecting block, which significantly improves the anti-bias load capacity of the mobile mode.

[0021] 3. Optimize the buffer performance and mold life: the innovative spiral spring-sliding sleeve buffer system realizes the gradient release of the mold closing impact force through the friction damping effect of the rubber sleeve and the guide rod. Avoid the problem of equipment vibration caused by the rapid spring rebound.

[0022] 4. Improve the degree of production automation: the coordinated control of the hydraulic drive upper mold cover and the motor drive mobile mode can realize independent adjustment of the opening and closing speed and pressure parameters, and adapt to the molding process requirements of inner liners of different materials.

[0023] 5. Reduce maintenance cost and energy consumption: the modular driving device and the standardized guide component design shorten the replacement time of key wear parts. The mechanical self-locking characteristic of the worm wheel and worm transmission avoids continuous power consumption, and the device box structure effectively isolates dust pollution, prolonging the maintenance cycle. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0025] Fig. 2 Figure is the schematic diagram of the driving device connecting structure of the utility model;

[0026] Fig. 3 Figure is the schematic diagram of the die cavity section structure of the utility model.

[0027] In the figure: 1U type groove frame, 2 moving die, 3 upper die cover, 4 male die block, 5 sliding guide rod, 6 sliding guide block, 7 bidirectional screw rod, 8 driving device, 9 driving block, 10 model cavity, 11 fixed frame, 12 hydraulic rod, 101 support block, 102 fixed rod, 103 guide rod, 104 spiral spring, 105 sliding sleeve, 106 rotating shaft block, 107 connecting block, 201 equipment box, 202 worm gear, 203 worm, 204 transmission shaft, 205 first bevel gear, 206 second bevel gear, 207 driving motor. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0029] Please refer to Figs. 1-3 A forming die for producing inner pot of electric rice cooker, including U type groove frame 1, moving die 2, upper die cover 3, male die block 4, wherein U type groove frame 1 is the main support frame of the die, two groups of mutually parallel sliding guide rods 5 are fixedly connected in U type groove frame 1, sliding guide rod 5 provides linear guide path for moving die 2, two groups of symmetrical moving die 2 are slidingly connected in U type groove frame 1 between sliding guide rod 5, moving die 2 internally constitutes the main cavity side wall of inner pot forming, the two sides of moving die 2 are fixedly connected with sliding guide block 6 respectively, sliding guide hole is penetrated through on sliding guide block 6, sliding guide rod 5 is slidingly connected in sliding guide hole respectively, bidirectional screw rod 7 is rotatably connected on the two sides of moving die 2 respectively, bidirectional screw rod 7 can convert rotary motion into linear opening and closing motion of two groups of moving die 2, one end of bidirectional screw rod 7 is rotatably connected in the inner wall of U type groove frame 1, the other end of bidirectional screw rod 7 is connected with driving device 8 after penetrating out of U type groove frame 1, driving device 8 provides stable power for the rotation of bidirectional screw rod 7, driving block 9 is fixedly connected on moving die 2 above sliding guide block 6 respectively, threaded hole is penetrated through on driving block 9, threaded hole is screw-connected with bidirectional screw rod 7 respectively, the upper end of two groups of moving die 2 is connected with upper die cover 3, the lower end of upper die cover 3 is fixedly connected with male die block 4 in the middle, male die block 4 is used for shaping inner pot inner wall shape, model cavity 10 is formed between male die block 4 and two groups of moving die 2, and the overall plastic forming of inner pot is completed through model cavity 10, the upper end of upper die cover 3 is fixedly connected with fixed frame 11, hydraulic rod 12 is fixedly connected on the four corners of fixed frame 11 respectively, the other end of hydraulic rod 12 is fixedly connected with U type groove frame 1, and hydraulic rod 12 can drive upper die cover 3 and male die block 4 to move up and down through fixed frame 11, to provide power for the stamping forming of inner pot.

[0030] In the above technical solution, the lower end of the U-shaped groove frame 1 is fixedly connected with a plurality of supporting blocks 101 for supporting the U-shaped groove frame 1.

[0031] In the above technical solution, the middle part of the two sides of the U-shaped groove frame 1 is fixedly connected with a fixed rod 102, the upper end of the fixed rod 102 is fixedly connected with a guide rod 103, the fixed frame 11 is provided with a guide hole, the guide rod 103 is slidingly connected in the guide hole, the guide rod 103 on the upper end of the fixed rod 102 is connected with a spiral spring 104 in a sleeved manner, the lower end of the spiral spring 104 is fixedly connected with the fixed rod 102, the upper end of the spiral spring 104 is fixedly connected with a sliding sleeve 105, the sliding sleeve 105 is sleevedly connected on the guide rod 103, the inner wall of the sliding sleeve 105 is fixedly connected with a rubber sleeve, the rubber sleeve is frictionally connected with the guide rod 103, wherein the fixed rod 102 supports and fixes the guide rod 103, the guide rod 103 provides a guide path for the vertical movement of the upper die cover 3, ensures the precise stamping of the punch block 4, and buffers the stamping process through the spiral spring 104 and the sliding sleeve 105 during the pressing process of the upper die cover 3. In addition, the internal rubber sleeve can resist the springback of the spring, prevent the springback of the spring from being too fast to cause the vibration of the upper die cover 3, and consume the reciprocating movement of the spring.

[0032] In the above technical solution, the upper end of the fixed rod 102 is fixedly connected with a rotating shaft block 106, the middle part of the bidirectional threaded rod 7 is rotatably connected on the rotating shaft block 106, the U-shaped groove frame 1 on one side of the fixed rod 102 is fixedly connected with a connecting block 107, and the middle part of the sliding guide rod 5 is fixedly connected with the connecting block 107, which provides a fulcrum for the middle part of the sliding guide rod 5 and the bidirectional threaded rod 7, reduces the deformation of the sliding guide rod 5 and the bidirectional threaded rod 7, and improves the movement accuracy of the moving die 2.

[0033] In the above technical scheme, the driving device 8 comprises a device box 201, a worm wheel 202, a worm 203, a transmission shaft 204, a first bevel gear 205, a second bevel gear 206, and a driving motor 207, the device box 201 is fixedly connected to one side of the outer end of the U-shaped groove frame 1, the bidirectional threaded rods 7 are respectively rotatably connected in the device box 201 after penetrating through the U-shaped groove frame 1, one end of each of the bidirectional threaded rods 7 in the device box 201 is fixedly connected with the worm wheel 202, one side of the worm wheel 202 is meshingly connected with the worm 203, the worms 203 are fixedly connected to the transmission shaft 204, the transmission shaft 204 is rotatably connected in the device box 201, the transmission shaft 204 is fixedly connected with the first bevel gear 205 at the middle part, the first bevel gear 205 is meshingly connected with the second bevel gear 206, the second bevel gear 206 is fixedly connected to the end of the rotating shaft of the driving motor 207, and the driving motor 207 is fixedly connected to one side of the device box 201, in the specific working process, the driving motor 207 drives the second bevel gear 206 to rotate, the second bevel gear 206 drives the first bevel gear 205 to rotate, the first bevel gear 205 drives the transmission shaft 204 to rotate, the transmission shaft 204 drives the worms 203 to rotate respectively, and the worms 203 drive the meshed worm wheels to rotate, so that the bidirectional threaded rods 7 can be driven to rotate through the worm wheels.

[0034] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0035] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A forming die for producing an inner container of an electric rice cooker, comprising a U-shaped groove frame (1), a moving die (2), an upper die cover (3), and a male die block (4), characterized in that: The U-shaped groove frame (1) is fixedly connected with two groups of parallel sliding guide rods (5), two groups of symmetrical moving dies (2) are slidingly connected in the U-shaped groove frame (1) between the sliding guide rods (5), the two sides of the moving die (2) are fixedly connected with sliding guide blocks (6) respectively, the sliding guide blocks (6) are penetrated by sliding guide holes, the sliding guide rods (5) are slidingly connected in the sliding guide holes respectively, the two sides of the moving die (2) are rotatably connected with bidirectional threaded rods (7) respectively, one end of the bidirectional threaded rod (7) is rotatably connected with the inner wall of the U-shaped groove frame (1), the other end of the bidirectional threaded rod (7) is connected with the driving device (8) after penetrating out of the U-shaped groove frame (1), the moving die (2) above the sliding guide block (6) is fixedly connected with driving blocks (9) respectively, the driving blocks (9) are penetrated by threaded holes, the threaded holes are threadedly connected with the bidirectional threaded rods (7) respectively, the upper ends of the two groups of moving dies (2) are connected with upper die covers (3), the lower ends of the upper die covers (3) are fixedly connected with convex die blocks (4), the convex die blocks (4) and the two groups of moving dies (2) form die cavities (10) therebetween, the upper ends of the upper die covers (3) are fixedly connected with fixed frames (11), the four corners of the fixed frame (11) are fixedly connected with hydraulic rods (12) respectively, the other ends of the hydraulic rods (12) are fixedly connected with the U-shaped groove frame (1).

2. The forming die for producing an inner container of an electric rice cooker according to claim 1, characterized in that: The lower end of the U-shaped groove frame (1) is fixedly connected with a plurality of supporting blocks (101).

3. The forming die for producing an inner container of an electric rice cooker according to claim 1, characterized in that: The middle parts of the two sides of the U-shaped groove frame (1) are fixedly connected with fixed rods (102) respectively, the upper ends of the fixed rods (102) are fixedly connected with guide rods (103), guide holes are formed in the fixed frame (11), the guide rods (103) are slidingly connected in the guide holes, the guide rods (103) on the upper ends of the fixed rods (102) are sleevedly connected with helical springs (104), the lower ends of the helical springs (104) are fixedly connected with the fixed rods (102), the upper ends of the helical springs (104) are fixedly connected with sliding sleeve assemblies (105), the sliding sleeve assemblies (105) are slidingly connected on the guide rods (103), the inner walls of the sliding sleeve assemblies (105) are fixedly connected with rubber sleeves, the rubber sleeves are frictionally connected with the guide rods (103).

4. The forming die for producing an inner container of an electric rice cooker according to claim 3, characterized in that: The upper end of the fixed rod (102) is fixedly connected with a rotating shaft block (106), the middle parts of the bidirectional threaded rods (7) are rotatably connected on the rotating shaft block (106) respectively, the U-shaped groove frames (1) on one side of the fixed rods (102) are fixedly connected with connecting blocks (107) respectively, the middle parts of the sliding guide rods (5) are fixedly connected on the connecting blocks (107) respectively.

5. The forming mold for producing an inner container of an electric rice cooker according to claim 1, characterized in that: Said driving device (8) including equipment box (201), worm (202), worm (203), drive shaft (204), first bevel gear (205), second bevel gear (206), driving motor (207), equipment box (201) is fixedly connected on the outer end side of U-shaped groove frame (1), the bidirectional threaded rod (7) is respectively rotatably connected in equipment box (201) after passing through U-shaped groove frame (1), and the bidirectional threaded rod (7) in equipment box (201) is respectively fixedly connected with worm (202) at one end, one side of worm (202) is engagedly connected with worm (203), the worm (203) is all fixedly connected on drive shaft (204), drive shaft (204) is rotatably connected in equipment box (201), the middle part of drive shaft (204) is fixedly connected with first bevel gear (205), first bevel gear (205) is engagedly connected with second bevel gear (206), second bevel gear (206) is fixedly connected at the end of the rotating shaft of driving motor (207), and driving motor (207) is fixedly connected on one side of equipment box (201).

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