Die holder for fixing die last by utilizing gravity turnover device and positioning method of die holder

Abstract

The invention belongs to the technical field of shoe and boot processing, and particularly relates to a mold base for fixing a mold last through a gravity turnover device and a positioning method of the mold base. A die holder for fixing a die last through a gravity turnover device comprises a die holder body, a last pile is fixed to the top of the die holder body, the die holder body is rotationally connected with a stabilizer through a pin shaft, the pin shaft is arranged in a through hole of the stabilizer in a penetrating mode, one end of the stabilizer is a pressing end, the other end of the stabilizer is a clamping end, and the clamping end comprises two clamping jaws. The clamping jaw corresponds to the fibula corresponding area of the mold last, and the gravitational torque of the clamping end is larger than that of the pressing end. Compared with the prior art, the mold last overturning device has the technical effects that the stabilizer is arranged, the mold last is fixed by driving the overturning device through the gravity of the mold last, one driving power piece is omitted, and convenience is brought to shoe and boot processing.

Description

Technical Field

[0001] The invention belongs to the technical field of shoe processing, and particularly relates to a mold base for fixing a mold last by utilizing a gravity turning device and a positioning method thereof. Background Art

[0002] During the shoe manufacturing process, one of the steps is to fix the mold last, see patent document CN214386350U.

[0003] In this document, the power for opening and closing the clamping jaws comes from a hydraulic cylinder or a lifting cylinder. Summary of the invention

[0004] Technical problem to be solved by the present invention: In this document, the power for opening and closing the clamping jaws comes from a hydraulic cylinder or a lifting cylinder, which has two disadvantages: one is that it consumes more energy, and the other is that it increases the complexity of system control.

[0005] The technical solution of the present invention is specifically as follows: A mold base that uses a gravity flipping device to fix a mold last includes a mold base, a last pile is fixed on the top of the mold base, the mold base is rotatably connected to a stabilizer through a pin shaft, the pin shaft is penetrated into a through hole of the stabilizer, one end of the stabilizer is a compression end, and the other end is a clamping end, the clamping end includes two clamping claws, the clamping claws correspond to the fibula corresponding area of ​​the mold last, and the gravity moment of the clamping end is greater than the gravity moment of the compression end.

[0006] The end of the pressing end is spherical.

[0007] The pressing end is connected to the plate, and both clamping jaws are fixed on the plate.

[0008] The two clamping jaws are arranged in parallel.

[0009] A positioning method, using the above-mentioned gravity turning device to fix the mold base of the mold last, includes a fixing method and a resetting method: S1. Fixation method: When the last is placed by external force, the last falls vertically, the last pile is inserted into the inner hole of the last, the gravity of the last is pressed on the compression end, the stabilizer is forced to rotate downward with the pin as the center, the clamping end is tilted upward, and the two clamping claws are clamped on both sides of the fibula corresponding area of ​​the last. Because the fibula corresponding area of ​​the last is the outermost protrusion of the last, the two clamping claws clamp the two sides of the fibula corresponding area, which limits the last from rotating with the last pile. At the same time, the last pile prevents the last from moving forward and backward, and the last is fixed; S2. Reset method: When the external force takes away the mold last, the external force clamp extends into the back of the mold last. After the clamp is tightened, the robotic arm lifts the mold last upward in the vertical direction. The gravity of the mold last is no longer pressed on the pressing end, because the gravity moment of the clamping end is greater than the gravity moment of the pressing end. The stabilizer is reset, and the two clamps will be released and fall away from the mold last.

[0010] Compared with the prior art, the technical effect of the present invention is that the present invention is provided with a stabilizer, and utilizes the gravity of the mold last to drive the flipping device to fix the mold last, thereby reducing one driving power component and bringing convenience to shoe processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the present invention.

[0012] Figure 2 This is an enlarged schematic diagram of the stabilizer.

[0013] Figure 3 Schematic diagram (I) of the present invention in use.

[0014] Figure 4 Schematic diagram (II) of the present invention in use. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

[0016] like Figure 1-2 A mold base for fixing a mold last using a gravity flipping device includes a mold base 10, a last pile 12 is fixed on the top of the mold base 10, the mold base 10 is rotatably connected to a stabilizer 20 through a pin shaft 11, the pin shaft 11 is penetrated in a through hole 12 of the stabilizer 20, one end of the stabilizer 20 is a compression end 22, and the other end is a clamping end, the clamping end includes two jaws 24, the jaws 24 correspond to the fibula corresponding area 91 of the mold last 90, and the gravity moment of the clamping end is greater than the gravity moment of the compression end.

[0017] In order to facilitate compression, the end of the compression end 22 is spherical.

[0018] For the convenience of manufacturing, the pressing end 22 is connected to the plate 23 , and the two clamping claws 24 are fixed on the plate 23 .

[0019] For stability, the two clamping jaws 24 are arranged in parallel.

[0020] Its working principle is: like Figure 1-4 , its positioning method includes fixing method and resetting method: S1. Fixation method: When the external force (mechanical arm) places the mold last 90, the mold last 90 falls vertically, the last pile 12 is inserted into the inner hole of the mold last 90, and the gravity of the mold last 90 presses on the pressing end 22, and the stabilizer 20 is forced to move downward with the pin shaft 11 as the center ( Figure 3The clamping end is tilted upward, and the two clamping claws 24 are clamped on both sides of the fibula corresponding area 91 of the mold last 90. Because the fibula corresponding area 91 of the mold last 90 is the outermost protrusion of the mold last 90, the two clamping claws 24 clamp the two sides of the fibula corresponding area 91, which limits the mold last 90 from rotating with the last pile 12. At the same time, the last pile 12 prevents the mold last 90 from moving forward and backward, and the mold last 90 is fixed; After processing, the stabilizer is reset.

[0021] S2. Reset method: When the external force robot arm takes away the mold last 90, the external force clamp extends into the back of the mold last 90. After the clamp is tightened, the robot arm lifts the mold last 90 upward in the vertical direction. The gravity of the mold last 90 is no longer pressed on the pressing end 22, because the gravity moment of the clamping end is greater than the gravity moment of the pressing end. The stabilizer is reset, and the two clamps 24 will be released and fall down and leave the mold last 90.

[0022] For other contents, please refer to the prior art.

[0023] The above description is only the preferred implementation mode of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, which should also be regarded as the protection scope of the present invention.

Claims

1. A mold base for fixing a mold last by using a gravity turning device, comprising a mold base (10), a mold last pile (12) being fixed on the top of the mold base (10), characterized in that: The mold base (10) is rotatably connected to the stabilizer (20) via a pin shaft (11). The pin shaft (11) is inserted into a through hole (12) of the stabilizer (20). One end of the stabilizer (20) is a compression end (22), and the other end is a clamping end. The clamping end includes two clamping claws (24). The clamping claws (24) correspond to the fibula corresponding area (91) of the mold last (90). The gravity moment of the clamping end is greater than the gravity moment of the compression end.

2. The mold base for fixing the mold last by using a gravity turning device as claimed in claim 1, characterized in that: The end portion of the pressing end (22) is spherical.

3. The mold base for fixing the mold last by using a gravity turning device as claimed in claim 2, characterized in that: The pressing end (22) is connected to the plate (23), and the two clamping claws (24) are fixed on the plate (23).

4. The mold base for fixing the mold last by using a gravity turning device as claimed in claim 3, characterized in that: The two clamping jaws (24) are arranged in parallel.

5. A positioning method, characterized in that: The mold base for fixing the mold last by using the gravity turning device as claimed in claim 1 includes a fixing method and a resetting method: S1. Fixation method: When the mold last (90) is placed by external force, the mold last (90) falls vertically, the last pile (12) is inserted into the inner hole of the mold last (90), the weight of the mold last (90) presses on the pressing end (22), the stabilizer (20) is forced to rotate downward with the pin shaft (11) as the center, the clamping end is tilted upward, and the two clamping claws (24) are clamped on both sides of the fibula corresponding area (91) of the mold last (90). Because the fibula corresponding area (91) of the mold last (90) is the outermost protrusion of the mold last (90), the two clamping claws (24) clamp on both sides of the fibula corresponding area (91), which limits the mold last (90) from rotating with the last pile (12), and at the same time, the last pile (12) prevents the mold last (90) from moving forward and backward, and the mold last (90) is fixed; S2. Reset method: When the external force takes away the mold last (90), the external force clamp is inserted behind the mold last (90). After the clamp is tightened, the mechanical arm lifts the mold last (90) upward in the vertical direction. The gravity of the mold last (90) is no longer pressed on the pressing end (22). Because the gravity moment of the clamping end is greater than the gravity moment of the pressing end, the stabilizer is reset, and the two clamping claws (24) are released and fall down and leave the mold last (90).

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