Hydraulic pressing machine for production of protective shoes

Abstract

The invention discloses a hydraulic pressing machine for protective shoe production, which relates to the technical field of shoe production equipment and comprises a rack, a positioning pressing seat, a pressing platform, a side pressing plate and a pressing seat. The protective shoe blank is hydraulically pressed through the two inclined side pressing plates, the bottom ends of the inclined side pressing plates firstly make contact with the bottom of the protective shoe blank in the pressing process, then the inclined side pressing plates are turned over in the pressing process, the effect similar to manual pushing, scraping and flattening is achieved, an adhesive on the edge of a shoe sole is evenly extruded and spread upwards, and the production efficiency is improved. And air in the adhesive is effectively exhausted, so that the whole adhesive layer of the adhesive surface is uniform and full, and the pressing effect of the protective shoes is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of footwear production equipment technology, and in particular to a hydraulic pressing machine for the production of protective shoes. Background Technology

[0002] In the production of protective shoes (such as safety shoes and work shoes), the pressing of the upper and sole with adhesive is a key process that determines the peel strength and safety performance of the finished product. At present, the industry generally uses hydraulic pressing machines for this process. The mainstream structure usually includes a gantry pressing machine that presses vertically downwards or a side pressing machine that applies pressure directly from the side.

[0003] However, existing bonding methods have significant drawbacks. During the bonding process, after the adhesive-coated sole and upper are initially aligned, gaps or uneven adhesive layers often exist at the bonding surfaces (especially in the transition area between the sole edge and the upper sidewall). Traditional vertical or unidirectional lateral bonding applies force in a single, fixed direction, directly pressurizing the upper or sole in one direction. This makes it difficult to effectively spread and compress the adhesive from the sole edge towards the center area. The adhesive cannot be evenly compressed and spread, resulting in areas where the adhesive layer may be too thick or too thin. Furthermore, air bubbles can easily remain in the gaps between the curved surface of the sole and the upper, ultimately leading to substandard final bonding strength between the sole and upper. This severely affects the durability and safety of protective shoes, and may cause quality problems such as glue separation and sole detachment in harsh working environments.

[0004] Therefore, there is an urgent need for a new type of hydraulic pressing equipment that can dynamically adjust the angle and direction of force during the pressing process, actively spreading the adhesive from the edge to the center and ensuring complete adhesion between the upper and the curved surface of the sole, so as to fundamentally improve the pressing quality and production efficiency of protective shoes. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic pressing machine for the production of protective shoes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic pressing machine for the production of protective shoes, comprising: The frame has a positioning hydraulic rod fixedly installed at its top. The positioning pressure seat is fixedly installed at the output end of the positioning hydraulic rod and located inside the frame; A pressing platform is fixedly installed inside the bottom of the frame. A material feeding seat is fixedly installed in the middle of the upper surface of the pressing platform. The material feeding seat is used to place the protective shoe blank. Two side pressure plates are provided and installed above the pressing platform. Both side pressure plates are inclined and located on both sides of the feeding seat. Both ends of the two side pressure plates are rotatably provided with inclined connecting parts. A pressing hydraulic rod is installed on the outer side of the side pressure plate and the pressing hydraulic rod is fixedly installed on the upper surface of the pressing platform. The auxiliary pressing structure has two components, both of which are slidably mounted above the pressing platform. The two auxiliary pressing structures are located at both ends of the feeding seat. Each auxiliary pressing structure has two pressure rods, the ends of which abut against the outer wall of the connecting part.

[0007] Preferably, it also includes a rubber lining, which has multiple linings and is horizontally and sequentially fixed to the inner side of the side pressure plate and the connecting part. The rubber lining undergoes a small deformation during the pressing process of the protective shoe blank and is completely attached to the surface of the protective shoe blank to ensure the pressing effect.

[0008] Preferably, it also includes a connecting seat, which is fixedly installed at the output end of the pressing hydraulic rod and movably connected to the top of the outer side of the side pressure plate via a pin; A fixing plate is fixedly installed at the bottom of the connecting seat. A spring is installed between the fixing plate and the bottom of the outer side of the side pressure plate. The fixing plate and the spring are used to restrict the side pressure plate from approaching the protective shoe blank in an inclined posture.

[0009] Preferably, it also includes a positioning screw hole and a positioning screw rod. The positioning screw hole is disposed through the middle of the fixed plate, and the positioning screw rod is installed inside the positioning screw hole by threads. A top block is fixedly installed at one end of the positioning screw rod, and the top block is used to limit the flipping angle of the side pressure plate.

[0010] Preferably, each of the auxiliary pressing structures includes a pressing seat, two pressing seats are perpendicular to two side pressing plates, and support rods are rotatably mounted on both sides of the pressing seat via pins. The pressing rods are fixedly mounted at both ends of the support rods, and a spherical block is fixedly mounted at one end of the pressing rod. The spherical block is used to squeeze the connecting part so that the connecting part completes the pressing of both ends of the protective shoe blank. A longitudinal hydraulic rod is installed on the outside of the pressing seat, and the longitudinal hydraulic rod is fixedly installed on the upper surface of the pressing platform. The auxiliary pressing structure also includes: The positioning rods are provided in two and located at both ends of the pressure seat. The two positioning rods are fixedly connected to the middle of the two sets of pressure rods. The middle of each of the two positioning rods is movably mounted with a connecting arm through a pin. The two connecting arms are fixedly mounted with positioning bolts at their close ends. The two positioning bolts are connected by a positioning sleeve through a thread.

[0011] Preferably, it further includes a "C" - shaped structure formed by the two pressure rods and the support rod, and the length of the lower pressure rod is shorter than that of the upper pressure rod.

[0012] Preferably, it further includes a lower pressing plate, which is fixedly installed at the bottom end of the positioning pressing seat and is set as a stepped structure.

[0013] Preferably, there are adjusting screw holes and adjusting bolts. There are two adjusting screw holes, which are respectively located at both ends of the lower pressing plate. There are two adjusting bolts, which are respectively installed in the two adjusting screw holes by threads. Pressing blocks are fixedly installed at the bottom ends of the two adjusting bolts.

[0014] Preferably, it further includes a guiding sliding sleeve and a guiding sliding rod. The guiding sliding sleeve is fixedly installed on the outside of the positioning pressing seat, and the guiding sliding rod is fixedly installed inside the machine frame and penetrates through the guiding sliding sleeve.

[0015] Preferably, the height of the lower surface edge line of the side pressing plate is lower than the height of the upper surface edge line of the blank feeding seat.

[0016] Technical effects and advantages of the present invention: 1. In the present invention, the two inclined side pressing plates are used to hydraulically press the protective shoe blank. During the pressing process, the bottom end of the inclined side pressing plate first contacts the bottom of the protective shoe blank, and then turns over during the pressing process, achieving an effect similar to manual pushing, scraping and spreading, so that the adhesive at the edge of the sole is evenly extruded and spread upward, and the air in the adhesive is effectively discharged, ensuring that the adhesive layer on the entire bonding surface is uniform and full, thereby effectively improving the pressing effect of the protective shoe; 2. In the present invention, by setting rotatable connecting parts at both ends of the side pressing plate, during the pressing process of the protective shoe blank, the two connecting parts are deformed towards the protective shoe blank under the extrusion of the pressing blocks. The deformed connecting parts can achieve self - adaptive pressing of the end of the protective shoe blank, so that the shoe upper material of the protective shoe is stably pressed at the edge of the sole, thereby effectively improving the pressing effect of the curved surface parts at both ends of the protective shoe sole. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the positioning pressing seat of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the pressing platform of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the side pressing plate of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the rubber lining of the present invention.

[0022] Figure 6 This is a schematic diagram of the pressure seat structure of the present invention.

[0023] Figure 7 This is a top view of the pressing platform structure of the present invention.

[0024] In the diagram: 1. Frame; 11. Positioning hydraulic rod; 2. Positioning pressure seat; 3. Pressing platform; 4. Side pressure plate; 5. Pressure seat; 21. Lower pressure plate; 22. Pressure block; 23. Adjusting screw hole; 24. Adjusting bolt; 31. Discharge seat; 41. Connecting part; 42. Rubber lining; 44. Pressing hydraulic rod; 501. Longitudinal hydraulic rod; 51. Support rod; 52. Pressure rod; 53. Spherical block; 54. Positioning rod; 55. Connecting arm; 56. Positioning bolt; 57. Positioning screw sleeve; 201. Guide sleeve; 202. Guide slide rod; 441. Connecting seat; 442. Fixing plate; 443. Spring; 444. Positioning screw hole; 445. Positioning screw; 446. Top block. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 7 As shown, the hydraulic pressing machine for the production of protective shoes provided by the present invention is essentially a hydraulic pressing machine that can ensure uniform and thorough pressing of the adhesive layer on the entire bonding surface.

[0027] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0028] In this embodiment, a hydraulic pressing machine for producing protective shoes includes: The frame 1 has a positioning hydraulic rod 11 fixedly installed at its top. The frame 1 is a three-dimensional frame structure with sufficient rigidity to provide stable support for the device. The positioning pressure seat 2 is fixedly installed at the output end of the positioning hydraulic rod 11 and located inside the frame 1; Guide sleeve 201 and guide rod 202, the guide sleeve 201 is fixedly installed on the outside of the positioning pressure seat 2, and the guide rod 202 is fixedly installed inside the frame 1 and passes through the guide sleeve 201; The lower pressure plate 21 is fixedly installed at the bottom of the positioning pressure seat 2 and is designed as a stepped structure. The stepped structure design allows the lower pressure plate 21 to match the height difference between the two ends of the slope of the protective shoe. Adjusting screw holes 23 and adjusting bolts 24 are provided. There are two adjusting screw holes 23, which are located at both ends of the lower pressure plate 21 respectively. There are two adjusting bolts 24, which are installed in the two adjusting screw holes 23 respectively by threads. The bottom end of each adjusting bolt 24 is fixedly installed with a pressure block 22. The pressure block 22 is used to contact the protective shoe blank and achieve compression. The pressing platform 3 is fixedly installed inside the bottom of the frame 1. A material feeding seat 31 is fixedly installed in the middle of the upper surface of the pressing platform 3. The material feeding seat 31 is used to place the protective shoe blank. Side pressure plates 4 are provided, and both can be slidably installed above the pressing platform 3. Both side pressure plates 4 are designed with an inclined structure and are located on both sides of the feeding seat 31. The height of the lower surface edge of the side pressure plate 4 is lower than the height of the upper surface edge of the feeding seat 31. The height difference between the side pressure plate 4 and the feeding seat 31 ensures that the contact can start from below the side edge of the shoe sole during pressing. Both ends of the two side pressure plates 4 are provided with inclined connecting parts 41 that can be rotated. The connecting parts 41 are connected to the side pressure plates 4 by elastic rubber parts made of rubber, which can ensure that the connecting parts 41 can rotate while realizing the self-resetting of the connecting parts 41. A pressing hydraulic rod 44 is installed on the outer side of the side pressure plate 4, and the pressing hydraulic rod 44 is fixedly installed on the upper surface of the pressing platform 3; The rubber lining 42 is provided in multiple ways and is horizontally and sequentially fixed on the inner side of the side pressure plate 4 and the connecting part 41. The rubber lining 42 undergoes a small deformation during the pressing process of the protective shoe blank and is completely attached to the surface of the protective shoe blank to ensure the pressing effect. The connecting seat 441 is fixedly installed at the output end of the pressing hydraulic rod 44 and is movably connected to the top of the outer side of the side pressure plate 4 via a pin. A fixing plate 442 is fixedly installed at the bottom end of the connecting seat 441. A spring 443 is installed between the fixing plate 442 and the bottom end of the outer side of the side pressure plate 4. The fixing plate 442 and the spring 443 are used to restrict the side pressure plate 4 from approaching the protective shoe blank in an inclined posture. The positioning screw hole 444 and the positioning screw 445 are provided. The positioning screw hole 444 is provided through the middle of the fixed plate 442. The positioning screw 445 is installed inside the positioning screw hole 444 by thread. A top block 446 is fixedly installed at one end of the positioning screw 445. The top block 446 is used to limit the flipping angle of the side pressure plate 4. The position of the top block 446 fixed at its end can be adjusted by rotating the positioning screw 445. When the side pressure plate 4 is squeezed and may flip excessively, the top block 446 can press against the back of the side pressure plate 4, thereby precisely limiting its maximum flipping angle and ensuring the stability and repeatability of the pressing action. The pressing seat 5 is provided with two, both of which are slidably installed above the pressing platform 3, and the two pressing seats 5 are respectively located at both ends of the blank feeding seat 31. Both sides of the pressing seat 5 are rotatably installed with support rods 51 through pin shafts. Both ends of the support rod 51 are fixedly installed with pressing rods 52. One end of the pressing rod 52 is fixedly installed with a spherical block 53, and the spherical block 53 is used to squeeze the connecting portion 41 so that the connecting portion 41 completes the pressing of both ends of the protective shoe blank; A longitudinal hydraulic rod 501 is installed outside the pressing seat 5, and the longitudinal hydraulic rod 501 is fixedly installed on the upper surface of the pressing platform 3; The two pressing rods 52 and the support rod 51 form a "C" - shaped structure, and the length of the pressing rod 52 located below is shorter than the length of the pressing rod 52 located above. The setting that the two ends of the "C" - shaped structure have different lengths enables the two spherical blocks 53 to stagger and abut against the outer side surface of the connecting portion 41 to ensure the stable rotation of the connecting portion 41; The positioning rods 54 are provided with two and are respectively located at both ends of the pressing seat 5. The two positioning rods 54 are respectively fixedly connected to the middle parts of the two groups of pressing rods 52. The middle parts of the two positioning rods 54 are both movably installed with connecting arms 55 through pin shafts. One ends of the two connecting arms 55 close to each other are both fixedly installed with positioning bolts 56. A positioning nut 57 is installed between the two positioning bolts 56 through threads. The positioning nut 57 and the positioning bolt 56 are used to adjust the distance between the two positioning rods 54, so as to adjust the initial positions of the two groups of pressing rods 52 and the spherical blocks 53, so that the maximum rotation angle of the connecting portion 41 is adjusted, so that the connecting portion 41 can adapt to protective shoes of different widths or styles.

[0029] When using a hydraulic press for the production of protective shoes in this embodiment, first place the protective shoe blank that has been coated with adhesive and has completed preliminary alignment above the blank feeding seat 31 on the pressing platform 3, and adjust the maximum flipping angle of the side pressing plate 4 according to the size and style of the protective shoe blank. By rotating the positioning screw 445, the position of the top block 446 is adjusted, so that the maximum flipping angle of the side pressing plate 4 is adjusted, and at the same time, the maximum rotation range of the connecting portions 41 at both ends of the side pressing plate 4 is adjusted. By rotating the positioning nut 57, the distance between the two connecting arms 55 is adjusted, so that the positions of the two pressing rods 52 and the spherical blocks 53 are adjusted, so that when the connecting portion 41 rotates to the maximum angle, it can fit with both ends of the protective shoe blank; After the protective shoe blank is placed, control the positioning hydraulic rod 11 to push out. The positioning hydraulic rod 11 drives the positioning pressing seat 2 to slide stably downward along the guiding slide rod 202. The positioning pressing seat 2 squeezes the protective shoe blank downward through the lower pressing plate 21 and the pressing block 22 so that the protective shoe blank is pressed tightly on the blank feeding seat 31, providing a stable basis for subsequent lateral pressing and preventing the movement of the protective shoe blank from affecting the pressing effect; After the protective shoe blank is compressed, the two pressing hydraulic rods 44 are pushed out simultaneously. The two pressing hydraulic rods 44 push the two side pressure plates 4 to slide horizontally towards the protective shoe blank. During this process, the bottom end of the side pressure plate 4 is kept in an inclined state under the action of the spring 443 and moves closer to the protective shoe blank in the inclined state. Furthermore, the height of the lower surface edge of the side pressure plate 4 is lower than the upper surface edge of the feeding seat 31, so that the side pressure plate 4 first contacts the edge of the sole of the protective shoe blank. At this time, the rubber lining 42 on the surface of the side pressure plate 4 contacts the edge of the sole of the protective shoe and undergoes a small-amplitude adaptive deformation to achieve the pressing treatment of the edge of the sole of the protective shoe. During the horizontal movement of the side pressure plate 4, the bottom of the side pressure plate 4 is squeezed by the edge of the protective shoe blank sole and stops moving. At this time, the pushing action of the pressing hydraulic rod 44 causes the side pressure plate 4 to rotate around the contact point between its bottom end and the edge of the protective shoe blank sole, so that the side pressure plate 4 changes from tilted rotation to vertical state, so as to flatten and press the adhesive at the connection between the protective shoe blank sole and the upper. After the side pressure plate 4 is in position, it controls the two longitudinal hydraulic rods 501 to extend. The two longitudinal hydraulic rods 501 drive the two sets of pressure rods 52 and the spherical block 53 to slide towards the protective shoe blank. During the sliding process, the spherical block 53 comes into contact with the outer side of the connecting part 41 and squeezes the connecting part 41 so that the connecting part 41 moves towards the end of the protective shoe blank. As the longitudinal hydraulic rods 501 continue to extend, the rubber lining 42 on the inner side of the connecting part 41 contacts the end of the protective shoe blank and applies pressure, thereby achieving the pressing treatment of the end of the protective shoe. After the side pressure plate 4 and the connecting part 41 reach the predetermined position, the positioning hydraulic rod 11, the pressing hydraulic rod 44 and the longitudinal hydraulic rod 501 are controlled to stop moving and maintain pressure to ensure that the adhesive is completely cured. Then, the longitudinal hydraulic rod 501, the pressing hydraulic rod 44 and the positioning hydraulic rod 11 are controlled to reset in sequence, thus completing the hydraulic pressing of the protective shoe blank.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic pressing machine for the production of protective shoes, characterized in that, include: The frame (1) has a positioning hydraulic rod (11) fixedly installed at its top. The positioning pressure seat (2) is fixedly installed at the output end of the positioning hydraulic rod (11) and located inside the frame (1); A pressing platform (3) is fixedly installed at the bottom of the inside of the frame (1). A feeding seat (31) is fixedly installed in the middle of the upper surface of the pressing platform (3). The feeding seat (31) is used to place the protective shoe blank. Two side pressure plates (4) are provided and installed above the pressing platform (3). The two side pressure plates (4) are both inclined and located on both sides of the feeding seat (31). The two ends of the two side pressure plates (4) are rotatably provided with inclined connecting parts (41). A pressing hydraulic rod (44) is installed on the outside of the side pressure plate (4), and the pressing hydraulic rod (44) is fixedly installed on the upper surface of the pressing platform (3). The auxiliary pressing structure is provided in two and can be slidably installed above the pressing platform (3). The two auxiliary pressing structures are located at both ends of the feeding seat (31). The auxiliary pressing structure has two pressure rods (52), and the ends of the two pressure rods (52) abut against the outer wall of the connecting part (41).

2. The hydraulic pressing machine for producing protective shoes according to claim 1, characterized in that, Also includes: The rubber lining (42) is provided in multiple ways and is horizontally fixedly installed on the inner side of the side pressure plate (4) and the connecting part (41). The rubber lining (42) undergoes a small deformation during the pressing process of the protective shoe blank and is completely attached to the surface of the protective shoe blank to ensure the pressing effect.

3. A hydraulic pressing machine for producing protective shoes according to claim 2, characterized in that, Also includes: The connecting seat (441) is fixedly installed at the output end of the pressing hydraulic rod (44) and is movably connected to the top of the outer side of the side pressure plate (4) through a pin. A fixing plate (442) is fixedly installed at the bottom of the connecting seat (441). A spring (443) is installed between the fixing plate (442) and the bottom of the outer side of the side pressure plate (4). The fixing plate (442) and the spring (443) are used to restrict the side pressure plate (4) from approaching the protective shoe blank in an inclined posture.

4. A hydraulic pressing machine for producing protective shoes according to claim 3, characterized in that, Also includes: The positioning screw hole (444) and the positioning screw (445) are provided in the middle of the fixing plate (442). The positioning screw (445) is installed inside the positioning screw hole (444) by thread. A top block (446) is fixedly installed at one end of the positioning screw (445). The top block (446) is used to limit the flipping angle of the side pressure plate (4).

5. A hydraulic pressing machine for producing protective shoes according to claim 1, characterized in that, Each of the auxiliary pressing structures includes a pressing seat (5), two pressing seats (5) are perpendicular to two side pressing plates (4), and support rods (51) are rotatably mounted on both sides of the pressing seat (5) via pins. The pressing rods (52) are fixedly mounted at both ends of the support rods (51), and a spherical block (53) is fixedly mounted at one end of the pressing rod (52). The spherical block (53) is used to press the connecting part (41) so that the connecting part (41) completes the pressing of both ends of the protective shoe blank. A longitudinal hydraulic rod (501) is installed on the outside of the pressing seat (5), and the longitudinal hydraulic rod (501) is fixedly installed on the upper surface of the pressing platform (3). The auxiliary pressing and fitting structure further includes: Positioning rods (54), two of which are provided and are respectively located at both ends of the pressing seat (5). The two positioning rods (54) are respectively fixedly connected to the middle parts of two groups of pressing rods (52). The middle parts of the two positioning rods (54) are both movably installed with connecting arms (55) through pin shafts. Positioning bolts (56) are fixedly installed at the ends of the two connecting arms (55) close to each other. A positioning nut (57) is installed between the two positioning bolts (56) by means of threads.

6. A hydraulic pressing machine for producing protective shoes according to claim 1, characterized in that, It further includes: The two pressing rods (52) and the support rod (51) form a "C" - shaped structure, and the length of the lower pressing rod (52) is shorter than that of the upper pressing rod (52).

7. A hydraulic pressing machine for producing protective shoes according to claim 1, characterized in that, It further includes: The lower pressing plate (21) is fixedly installed at the bottom end of the positioning pressing seat (2) and is set as a stepped structure.

8. A hydraulic pressing machine for producing protective shoes according to claim 7, characterized in that, It further includes: Adjusting screw holes (23) and adjusting bolts (24). Two adjusting screw holes (23) are provided and are respectively located at both ends of the lower pressing plate (21). Two adjusting bolts (24) are provided and are respectively installed in the two adjusting screw holes (23) by means of threads. Pressing blocks (22) are fixedly installed at the bottom ends of the two adjusting bolts (24).

9. A hydraulic pressing machine for producing protective shoes according to claim 1, characterized in that, It further includes: A guiding sliding sleeve (201) and a guiding sliding rod (202). The guiding sliding sleeve (201) is fixedly installed on the outside of the positioning pressing seat (2), and the guiding sliding rod (202) is fixedly installed inside the frame (1) and penetrates through the guiding sliding sleeve (201).

10. A hydraulic pressing machine for producing protective shoes according to claim 1, characterized in that, It further includes: The height of the lower surface edge line of the side pressing plate (4) is lower than the height of the upper surface edge line of the material placing seat (31).

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