Magnetic suction clamping mechanism of side edge magnetic suction mold last
By designing a magnetic clamping mechanism for the side magnetic last, the precise positioning and fixing of the last is achieved using magnetic power components and clamping cylinders, solving the problem of inconvenient fixing of traditional shoe lasts and improving the stability and quality of shoe production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIHUA 3515 LEATHER & SHOES
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional shoe molds are difficult to fix, which makes the molds prone to tilting during production, affecting production efficiency and product quality.
Design a magnetic clamping mechanism for a side magnetic suction mold last. The mechanism utilizes a magnetic power component and a clamping cylinder to achieve precise positioning and fixation of the mold last. This includes the use of a magnetic cylinder or electromagnet, as well as the cooperation between the clamping cylinder and the clamping arm, to ensure the stability of the mold last in all directions.
This achieves stable fixation of the mold last, preventing it from wobbling back and forth, left and right, up and down, thus improving the quality and efficiency of shoe and boot production.
Smart Images

Figure CN224193022U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of footwear processing technology, specifically relating to a magnetic clamping mechanism for a side magnetic last. Background Technology
[0002] In traditional shoemaking techniques, the forming process of upper shoes involves eight steps: lasting, pressing, roughing, heating, injection molding, cooling, finishing, and last removal. Traditional shoe molds consist of a mounting base and a last, which are fixed together. During shoemaking, a plastic shoe mold is first used to shape the upper, and then the shaped upper is placed on an aluminum shoe mold to cast the sole. The rationality of the mold and last structure is a key factor in the quality of the finished shoe, while the ease and speed of fixing the shoe mold and last is an important factor affecting shoe production efficiency. On an assembly line, the mold and last are not easy to fix, and they are prone to tilting during production, leading to product defects. Utility Model Content
[0003] The technical problem to be solved by this utility model is: how to design a magnetic clamping mechanism relative to a side magnetic last to prevent the last from wobbling back and forth, left and right, up and down.
[0004] The specific technical solution of this utility model is as follows:
[0005] A magnetic clamping mechanism for a side magnetic last includes a base plate tray, a base support on the base plate tray, a steel base fixed on the base support, the steel base being used to fix the last, and a clamping mechanism on the side of the base plate tray. The clamping mechanism includes a clamping cylinder with two clamping arms, one of which fixes the cylinder end of a magnetic power component, and the magnetic suction surface of the magnetic power component is located on the outer side.
[0006] The magnetic power component is either a magnetic cylinder or an electromagnet.
[0007] The base is provided with a base groove, the outline of which matches the outline of the positioning side of the mold. A central fixing post is fixed on the steel base, and the central fixing post corresponds to the insertion hole of the mold.
[0008] The steel base is equipped with screws for mold connection.
[0009] Each clamping arm has two positioning pins on its clamping surface, and the base has positioning holes that mate with the positioning pins. The axial directions of the positioning pins and positioning holes are consistent with the clamping direction of the clamping cylinder.
[0010] Compared with the prior art, the technical effect of this utility model is that it is equipped with left and right and front and back positioning devices, so the mold will not wobble in the front, back, left, right and up, which helps to improve the quality of shoes and boots. Attached Figure Description
[0011] Figure 1 This is a schematic diagram showing the fit between the tray and the mold.
[0012] Figure 2 This is a three-dimensional schematic diagram of the base.
[0013] Figure 3 yes Figure 1 A left-side view diagram.
[0014] Figure 4 This is a schematic diagram of the present invention.
[0015] Figure 5 yes Figure 4 A top-down view.
[0016] Figure 6 This is a schematic diagram showing the fit between the tray and the mold.
[0017] Figure 7 yes Figure 6 A top-down view. Detailed Implementation
[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0019] like Figure 1-7 A magnetic clamping mechanism for a side magnetic last includes a base plate tray 10, a base support 2 on the base plate tray 10, and a steel base 1 fixed on the base support 2. The steel base 1 is used to fix the last 5.
[0020] like Figure 4-5 The bottom plate tray 10 is provided with a clamping mechanism on its side. The clamping mechanism includes a clamping cylinder 8. The clamping cylinder 8 is provided with two clamping arms 9. One of the clamping arms 9 fixes the cylinder end of the magnetic power component 6. The magnetic attraction surface 7 of the magnetic power component 6 is located on the outside.
[0021] The magnetic power component 6 is either a magnetic cylinder or an electromagnet.
[0022] For precise positioning, the base 2 is provided with a base groove 13, the outline of which matches the outline of the positioning side of the mold. A central fixing post 3 is fixed on the steel base 1, and the central fixing post 3 corresponds to the insertion hole of the mold.
[0023] For stability, the steel base 1 is equipped with molded screws 4.
[0024] To facilitate front and rear positioning, each clamping arm 9 has two positioning pins 11 on its clamping surface, and the base 2 has positioning holes 12 that cooperate with the positioning pins 11. The axial directions of the positioning pins 11 and the positioning holes 12 are consistent with the clamping direction of the clamping cylinder 8.
[0025] Its working principle is as follows:
[0026] S1. Preparation: As follows Figure 1 The mold 5 is fixed to the steel base 1. The lower part of the steel base 1 is inserted into the base support 2, which has a base support groove 13. The clamping cylinder 8 is installed at the front end of the robotic arm.
[0027] S2, Pushing out: After the mold 5, steel base 1, and base 2 are transported to the designated area via the assembly line, the robotic arm will push the clamping cylinder 8 and clamping arm 9 out to the side of the base plate tray 10.
[0028] S3. Attraction: When the magnetic power component 6 is energized, it uses magnetic force to attract the steel base 1 to the magnetic surface 7, in the left-right direction ( Figure 4 The overall positioning of mold 5, steel base 1, and base support 2 was completed in the left and right directions.
[0029] S4. Clamping: Because the positioning is completed in the left and right direction, the positioning pin 11 and the positioning hole 12 are axially aligned. At this time, the clamping cylinder 8 is activated, causing the base support 2 to move to the clamping center of the clamping cylinder 8. The four positioning pins 11 are also gradually inserted into the positioning hole 12, which completely completes the overall precise positioning and fixing of the mold 5, steel base 1, and base support 2. During the processing of the mold, the mold will not shake back and forth, left and right, up and down.
[0030] It should be noted that in this step, the mold 5, steel base 1, base support 2 as a whole (hereinafter referred to as the whole) and clamping arm 9 will have relative displacement. It is only necessary to overcome the maximum static friction between steel base 1 and magnetic surface 7. Even if the magnetic force between steel base 1 and magnetic surface 7 is relatively large, the maximum static friction can be reduced by adjusting the coefficient of friction, thus providing convenience for clamping.
[0031] For other details, please refer to the existing technology.
[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.
Claims
1. A magnetic clamping mechanism for a side magnetic suction mold last, comprising a base plate tray (10), a base support (2) provided on the base plate tray (10), and a steel base (1) fixed on the base support (2), the steel base (1) being used to fix the mold last (5), characterized in that: The bottom plate tray (10) is provided with a clamping mechanism on the side. The clamping mechanism includes a clamping cylinder (8). The clamping cylinder (8) is provided with two clamping arms (9). One of the clamping arms (9) fixes the cylinder end of the magnetic power component (6). The magnetic attraction surface (7) of the magnetic power component (6) is located on the outside.
2. The magnetic clamping mechanism of the side magnetic suction mold as described in claim 1, characterized in that: The magnetic power component (6) is a magnetic cylinder or an electromagnet.
3. The magnetic clamping mechanism of the side magnetic suction mold as described in claim 2, characterized in that: The base (2) is provided with a base groove (13), the outline of which matches the outline of the positioning side of the mold, and a central fixing post (3) is fixed on the steel base (1), the central fixing post (3) corresponding to the insertion hole of the mold.
4. The magnetic clamping mechanism of the side magnetic suction mold as described in claim 3, characterized in that: The steel base (1) is provided with molded screws (4).
5. The magnetic clamping mechanism of the side magnetic suction mold as described in claim 4, characterized in that: Each clamping arm (9) has two positioning pins (11) on its clamping surface, and the base (2) has positioning holes (12) that cooperate with the positioning pins (11). The axial directions of the positioning pins (11) and the positioning holes (12) are consistent with the clamping direction of the clamping cylinder (8).