A shoe last turning device for a shoe-making machine with a continuous upper

Abstract

A shoe last flipping device for a shoe-making machine with uppers is located in front of an operator at a workstation, and includes a shoe last and a flipping mechanism for flipping the shoe last. The flipping mechanism is used to flip the shoe last back and forth in an upward and downward position in a manner of flipping toward the operator. When the shoe last is flipped to the lower position, the shoe last forms a matching state with the bottom mold of the sole. When the shoe last is flipped to the upper position, the toe of the shoe last faces upward. The shoe last flipping device flips the shoe last back and forth up and down facing the operator at the workstation. The shoe last flipping method occupies less left and right space and has a compact layout. After flipping upward and lifting, the toe of the shoe last faces upward. The shoe last flipping method is simple and novel, and can more conveniently realize the operation of manually putting on uppers and taking finished shoes.

Description

Technical Field

[0001] The invention relates to a shoe last turning device for a shoe last making machine, which is used in conjunction with a bottom mold and an injection device of a sole and belongs to the technical field of injection molding equipment for shoe last making. Background Art

[0002] The shoemaking process of the existing uppering shoemaking machine mainly includes the processes of uppering, last turning, mold closing, injection, shaping, demoulding, etc. Uppering is that the worker puts the upper on the shoe last manually, and last turning is to turn the last head with the upper from top to bottom and turn the false last head for the sole piece to top or move it away. The action that connects the series of actions of uppering, last turning, mold closing and mold opening is the movement of the shoe last. Before uppering and after demoulding, the shoe last needs to be moved. The shoe last can be moved to a suitable position and angle to facilitate workers to put the shoe upper on the shoe last and to facilitate workers to take the finished shoes off the shoe last. The prior art usually adopts a method of moving the shoe last vertically or first moving the shoe last vertically and then swinging the shoe last left and right to move the shoe last. The method of only moving the shoe last vertically is inconvenient for workers to put on the upper and take off the finished shoes, and the method of swinging the shoe last left and right has the defect of occupying too much space on the left and right sides of the workstation. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned defects of the prior art and to provide a new shoe last flipping device for a shoe-making machine with uppers. The shoe last flipping device flips the shoe last up and down reciprocatingly at the workstation facing the operator. The shoe last flipping method occupies less space on the left and right sides of the workstation and has an extremely compact left-right layout. After flipping and lifting, the tip of the shoe last faces upward. The shoe last flipping method is not only simple but also novel enough, which greatly facilitates the workers in putting on uppers and taking out finished shoes, and greatly facilitates the convenience of operation.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A shoe last flipping device for a lasted shoemaking machine is located directly in front of an operator at a workstation, and comprises a shoe last and a flipping mechanism for flipping the shoe last. The flipping mechanism is used to flip the shoe last back and forth between the upper and lower positions in a manner of flipping toward the operator. When the shoe last is flipped to the lower position, the tip of the shoe last faces the operator, and the shoe last forms a matching state with a bottom mold of the sole. When the shoe last is flipped to the upper position, the tip of the shoe last faces upward.

[0006] By adopting the above technical scheme, a new shoe last flipping device for a continuous-last shoemaking machine is provided. The shoe last flipping device flips the shoe last up and down reciprocatingly at the workstation facing the operator. The shoe last flipping method occupies less space on the left and right sides of the workstation and has a compact layout. After flipping and lifting, the tip of the shoe last faces upward. The shoe last flipping method is simple and novel, and can more conveniently realize the operations of manually putting on the upper and taking out the finished shoes.

[0007] The present invention is further configured as follows: the flip mechanism includes a support, a rotating shaft and a shoe last placement member, and the flipping of the shoe last placement member is driven by a rotating drive device connected to the rotating shaft or a telescopic push rod directly hinged to the shoe last placement member. The rotating drive device can be a stepping motor, a servo motor or other driving device that can rotate the rotating shaft.

[0008] The present invention is further configured as follows: the flipping mechanism includes a support, a rotating shaft, a shoe last mounting member, a gear, a rack and a telescopic push rod. The rotating shaft is rotatably mounted on the support. The gear and the shoe last mounting member are both mounted on the rotating shaft. The rotation of the gear will drive the shoe last mounting member to swing synchronously. The rack is meshed with the gear. The telescopic push rod realizes the flipping of the shoe last mounting member by pushing the axial movement of the rack.

[0009] By adopting the above technical scheme, a variety of shoe last flipping methods are provided. The first is to use a stepper motor / servo motor to rotate the rotating shaft to realize the flipping of the shoe last mounting member fixed on the rotating shaft. The second is to use a telescopic push rod hinged on the front and back sides of the shoe last mounting member to realize the flipping of the shoe last mounting member. At this time, the other end of the telescopic push rod is hinged on the fixing member above or below the shoe last flipping device. The third is to use a combination of a telescopic push rod, a rack and a gear to realize the flipping of the shoe last. This shoe last flipping device not only has a large flipping range, but also has the advantages of better reliability between various accessories, higher operation quality, and high shoe last flipping accuracy. In the second and third schemes, the telescopic push rod is an electric push rod, a telescopic hydraulic cylinder or a telescopic air cylinder.

[0010] The present invention is further configured as follows: the rotating shaft is arranged on two supports, the gear is arranged on the rotating shaft between the two supports, and the shoe last placement member is arranged on the rotating shaft through connecting parts located on both sides of the gear or directly arranged on the gear.

[0011] By adopting the above technical solution, the stability of the transmission structure is optimized, and the flipping reliability and flipping accuracy of the shoe last can be further guaranteed.

[0012] The present invention is further configured as follows: a false last is detachably arranged on the fixed placement member below the support, and the false last cooperates with the bottom mold to produce the shoe sole.

[0013] The present invention is further configured as follows: the false last is movably plugged into the fixed placement piece via the last plug-in plate.

[0014] By adopting the above technical scheme, a detachable false last is arranged on the fixed mounting part below the flipping device, and the false last can be used to produce the shoe sole in cooperation with the bottom mold. After removing the false last, the shoe last with the upper is turned down to realize the production of two-color upper shoes. This scheme can take into account the production of single-color upper shoes and two-color upper shoes, and has the advantages of good versatility and wide application range.

[0015] The main beneficial effects of the present invention are:

[0016] 1. The shoe last turning device of the present invention turns the shoe last up and down reciprocatingly at the workstation facing the operator. The shoe last turning method occupies less space on the left and right sides of the workstation and has a very compact left-right layout. After turning and lifting, the sole of the shoe last faces the operator and the toe of the shoe last faces upward. During the turning process, the toe of the shoe last is always located in front of and / or above the heel of the last. The shoe last turning method is not only simple but also novel enough, which greatly facilitates the workers to put on the upper and remove the finished shoes.

[0017] 2. The present invention adopts a combination of a telescopic push rod, a rack and a gear to push the shoe last to flip. The shoe last flipping device not only has the advantages of a large flipping range, but also has the advantages of good reliability between various accessories, high operational stability and high flipping angle accuracy.

[0018] 3. The present invention is provided with a detachable false last on the fixed mounting member of the turning device, which can take into account the production of single-color upper shoes and double-color upper shoes, and has the advantages of good versatility and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic structural diagram of the present invention after the shoe last is turned up;

[0021] Figure 2 It is a schematic structural diagram of the present invention after the shoe last is turned down;

[0022] Figure 3 It is a structural schematic diagram of the last inserting plate and the fixing placement member in the present invention.

[0023] In the figure, 1, shoe last; 2, support; 3, rotating shaft; 4, shoe last mounting member; 5, gear; 6, rack; 7, fixed mounting member; 8, locking part; 9, hinged part; 10, unlocking push plate; 11, supporting strip plate; 12, bottom mold; 13, telescopic cylinder; 14, last insertion plate. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] like Figures 1 to 3 As shown, a shoe last flipping device for a shoe-making machine with an upper is located in front of an operator at a workstation, and includes a shoe last 1 and a flipping mechanism for flipping the shoe last 1. The flipping mechanism is used to flip the shoe last 1 back and forth between the upper and lower positions in a manner of flipping toward the operator. When the shoe last 1 is flipped to the lowest position (such as Figure 2 As shown), the tip of the shoe last 1 faces the operator, and the shoe last 1 forms a matching state with the bottom mold 12 of the sole; when the shoe last 1 is turned to the uppermost position (as shown Figure 1 ), the toe of the shoe last 1 faces upward. During the reciprocating flipping of the shoe last 1, the toe of the shoe last 1 is always located in front of and / or above the heel of the last (the side of the flipping mechanism close to the operator is the front side, and the side away from the operator is the rear side. This position relationship definition is applicable to other expressions about the front and rear directions in the article).

[0027] The flipping mechanism includes a support 2, a rotating shaft 3, a shoe last mounting member 4, a gear 5, a rack 6 and a telescopic push rod (the telescopic push rod is an electric push rod, a telescopic hydraulic cylinder or a telescopic air cylinder 13). A shoe last 1 is mounted on the shoe last mounting member 4. The rotating shaft 3 can be rotatably mounted on the two supports 2. The gear 5 is mounted on the rotating shaft 3 between the two supports 2. The shoe last mounting member 4 is mounted on the rotating shaft 3 or directly on the gear 5 through the connecting parts located on both sides of the gear 5. The rotation of the gear 5 will drive the shoe last mounting member 4 to swing synchronously. The rack 6 is meshed with the gear 5. The telescopic push rod realizes the flipping of the shoe last mounting member 4 by pushing the axial movement of the rack 6.

[0028] A locking structure is also provided on the fixed placement member 7 of the shoe last turning device at the work station to prevent the shoe last placement member 4 and the shoe last 1 from turning up together.

[0029] The locking structure is arranged in front of the left and right sides of the shoe last placement member 4, specifically at the front edge of the fixed placement member 7. The locking structure includes a locking portion 8, a hinge portion 9 and an unlocking push plate 10. The locking portion 8 and the unlocking push plate 10 are respectively arranged on both sides of the hinge portion 9, and the angle between the unlocking push plate 10 and the outer side of the main part of the locking portion 8 is an obtuse angle. The locking portion 8 and the unlocking push plate 10 are hinged to the fixed placement member 7 through the hinge portion 9. When the shoe last 1 is turned over to the lowest position, the left and right edges of the shoe last placement member 4 are placed on the supporting strip 11, pushing the locking portion 8, so that the locking portion 8 is simultaneously stuck on the shoe last placement member 4 and the supporting strip 11, and the supporting strip 11 is fixed to the fixed placement member 7.

[0030] The fixed placement member 7 below the support 2 is movably connected to the false last through the last insertion plate 14, and the false last cooperates with the bottom mold 12 to produce the shoe sole.

[0031] When the false last is not installed, the shoe last 1 cooperates with the bottom mold 12 to produce single-color upper shoes. After the false last is installed, the false last can cooperate with the bottom mold 12 to produce the shoe sole, and then the false last is removed, and the last 1 is turned down to cooperate with the bottom mold 12 to produce double-color upper shoes.

Claims

1. A shoe last flipping device for a shoe last making machine with an upper, mounted on a fixed mounting member (7) and located directly in front of an operator at a workstation, comprising a shoe last (1) and a flipping mechanism for flipping the shoe last (1), wherein the shoe last (1) is mounted on a shoe last mounting member (4) of the flipping mechanism, and characterized in that: The flipping mechanism is used to flip the shoe last (1) back and forth between the upper and lower positions in a manner of flipping toward an operator. When the shoe last (1) is flipped to the lower position, the tip of the shoe last (1) faces the operator, and the shoe last (1) forms a mating state with the bottom mold (12) of the sole. When the shoe last (1) is flipped to the upper position, the tip of the shoe last (1) faces upward. The fixed placement member (7) is provided with a locking structure for preventing the shoe last placement member (4) from flipping upward. The locking structure is arranged in front of the left and right sides of the shoe last placement member (4). The locking structure comprises a locking portion (8), a hinge portion (9) and an unlocking push plate (10). The locking structure is The buckle portion (8) and the unlocking push plate (10) are respectively arranged on both sides of the hinge portion (9); the included angle between the unlocking push plate (10) and the outer side of the main part of the buckle portion (8) is an obtuse angle; the buckle portion (8) and the unlocking push plate (10) are hinged to the fixed placement member (7) through the hinge portion (9); when the shoe last (1) is turned over to the lowest position, the left and right edges of the shoe last placement member (4) are placed on the supporting strip (11), pushing the buckle portion (8) so that the locking opening of the buckle portion (8) is simultaneously locked on the shoe last placement member (4) and the supporting strip (11); the supporting strip (11) is fixed to the fixed placement member (7); The flipping mechanism comprises a support (2), a rotating shaft (3), a shoe last mounting member (4), a gear (5), a rack (6) and a telescopic push rod. The rotating shaft (3) is rotatably mounted on the support (2). The gear (5) and the shoe last mounting member (4) are both mounted on the rotating shaft (3). The rotation of the gear (5) drives the shoe last mounting member (4) to swing synchronously. The rack (6) meshes with the gear (5). The telescopic push rod realizes the flipping of the shoe last mounting member (4) by pushing the rack (6) to move axially. The rotating shaft (3) is mounted on two supports (2), the gear (5) is mounted on the rotating shaft (3) between the two supports (2), and the shoe last mounting member (4) is mounted on the rotating shaft (3) or directly on the gear (5) via connecting portions located on both sides of the gear (5).

2. The shoe last turning device for a shoe last making machine according to claim 1, characterized in that: A false last is detachably arranged on the fixed mounting member (7) below the support (2), and the false last cooperates with the bottom mold (12) to produce the shoe sole.

3. The shoe last turning device for a shoe last making machine according to claim 2, characterized in that: The false last is movably plugged into the fixed mounting piece (7) via a last plugging plate (14).

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