A sponge foaming traction device for footwear

Abstract

The application relates to the field of cylindrical sponge foaming, and particularly discloses a sponge foaming traction device for shoe materials. The sponge foaming traction device comprises a guide frame, a guide cavity for sponge movement is arranged on the inner side of the guide frame, and a plurality of lifting mechanisms are arranged on the outer side of the guide frame in a circumferential direction. The lifting mechanism comprises a lifting frame arranged on the outer side of the guide frame, a chain driving mechanism mounted on the lifting frame, a lifting seat connected with the chain driving mechanism, a traction plate in sliding connection with the lifting seat, and an insertion mechanism for driving the traction plate to insert into the sponge. The guide frame is provided with a guide hole through which the traction plate vertically slides. The application has good traction and lifting effect on large-size sponges, and the spacing of the traction plate can be set as the cutting spacing of the sponge, so that the sponge is not damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cylindrical sponge foaming, and in particular to a sponge foaming traction device for shoe materials. BACKGROUND

[0002] Shoe sponge is mostly polyurethane material, which has the advantages of light weight, high elasticity, strong impact resistance, high wear resistance, etc., and is widely used in the production of leisure shoes, sports shoes, etc. During the production of shoe sponge, a traction device is needed to promote the stable progress of the foaming process.

[0003] In related technologies, for cylindrical shoe sponge, the foaming machine generally adopts a vertically arranged traction device. The traction device includes a plurality of lifting units arranged in a circle. The area surrounded by the plurality of lifting units is a lifting cavity for lifting the cylindrical sponge. The lifting unit includes a fixed plate and a chain drive structure, and the fixed plate is connected with a plurality of fixed needles.

[0004] In related technologies, the fixed needle is inserted into the cylindrical sponge to fix the sponge relative to the fixed plate, and then the chain drive structure drives the fixed plate to move upwards, thereby pulling the cylindrical sponge to lift and completing the foaming traction action. However, if the fixed needle is thin, the traction effect on the cylindrical sponge with large diameter is insufficient, and if the fixed needle is thick, it is easy to cause damage to the sponge, affecting the subsequent shoe material processing and use. SUMMARY

[0005] In order to improve the traction effect and prevent the sponge from being damaged, the present application provides a sponge foaming traction device for shoe materials.

[0006] The sponge foaming traction device for shoe materials provided by the present application adopts the following technical solution:

[0007] A sponge foaming traction device for shoe materials, comprising a guide frame, a guide cavity for moving the sponge is arranged on the inner side of the guide frame, and a plurality of lifting mechanisms are arranged on the outer side of the guide frame in a circumferential direction.

[0008] The lifting mechanism includes a lifting frame arranged on the outer side of the guide frame, a chain drive mechanism mounted on the lifting frame, a lifting seat connected with the chain drive mechanism, a traction plate in sliding connection with the lifting seat, and an insertion mechanism for driving the traction plate to insert into the sponge.

[0009] The guide frame is provided with a guide hole through which the traction plate vertically slides.

[0010] By adopting the technical scheme, the sponge is inserted into the traction plate to be lifted, and the foaming traction is completed. On the one hand, the contact area of the traction plate and the sponge is large, the bearing force is good compared to the fixed needle, and the large-size sponge is more easily lifted; on the other hand, the spacing of the traction plate can be set as the cutting spacing of the sponge, and the traction plate can play a role in pre-cutting the sponge. After the sponge is lifted to the top end, the sponge can be cut directly along the insertion port of the traction plate, so that the traction plate does not damage the sponge.

[0011] Optionally, the insertion mechanism comprises an extrusion strip fixedly connected with the guide frame, a pressure receiving strip in sliding connection with the lifting seat, and a hinged strip hingedly connected with the lifting seat, the length direction of the extrusion strip is arranged in the vertical direction, the lower end of the extrusion strip is provided with an extrusion inclined surface, the end of the pressure receiving strip close to the extrusion strip is provided with a pressure receiving inclined surface matched with the extrusion inclined surface, one end of the hinged strip is arranged on the side of the pressure receiving strip away from the guide frame, and the other end of the hinged strip is arranged on the side of the traction plate away from the guide frame. The lifting seat is connected with the traction plate through a return spring, and the return spring applies an action force to the traction plate to move away from the guide frame.

[0012] By adopting the technical scheme, when the lifting seat moves to the lower end of the extrusion strip, the pressure receiving strip contacts the extrusion strip, and the swinging of the hinged strip can push the traction plate close to the guide frame, so that the traction plate is inserted into the sponge. The insertion mechanism is driven by the chain drive mechanism, so that the traction plate can be inserted into the lower end of the guide frame and pulled out from the upper end of the guide frame, without the need to set a motor, which is relatively energy-saving and has a reliable and stable structure.

[0013] Optionally, the hinged strip and the lifting seat are hingedly connected through a hinge shaft, and the distance from the axis of the hinge shaft to the end of the hinged strip close to the pressure receiving strip is less than one third of the length of the hinged strip.

[0014] By adopting the technical scheme, a small distance movement of the pressure receiving strip can drive the traction plate to be inserted into the sponge by a large distance.

[0015] Optionally, the end of the traction plate close to the guide frame is triangular.

[0016] Optionally, the end of the traction plate close to the guide frame is connected with a plurality of insertion needles.

[0017] By adopting the technical scheme, the traction plate is easily inserted into the sponge.

[0018] Optionally, the lower end of the guide frame is connected with a forming hopper, the lower end of the forming hopper is connected with a sponge feeding pipe, the forming hopper is provided with a traction frame, and the upper end of the traction frame is connected with a traction rope.

[0019] By adopting the technical scheme, the front section of the sponge is first pulled by the traction frame, and then pulled by the traction plate.

[0020] Optionally, a plurality of connecting rods are connected between the forming hopper and the lower end of the guide frame.

[0021] By adopting the technical scheme, the area between the forming hopper and the guide frame is convenient for an operator to observe, and thus the traction condition of the front section of the sponge is convenient to determine.

[0022] Optionally, the traction frame comprises a bottom ring, a traction seat arranged on the upper side of the bottom ring, and a plurality of traction chains connected between the bottom ring and the traction seat.

[0023] Optionally, the chain drive mechanism comprises two rotating shafts rotatably connected with the lifting frame, drive sprockets fixedly sleeved on the rotating shafts, a drive chain sleeved between the two drive sprockets, and a drive motor for driving one of the rotating shafts to rotate, the lifting seats are fixedly connected with the drive chain, and a plurality of the lifting seats are arranged at intervals along the drive chain.

[0024] By adopting the technical scheme, the drive motor is started, the rotating shafts are driven to rotate, the drive sprockets are driven to rotate, and the drive chain drives the lifting seats to rotate in cycles.

[0025] Optionally, support rods are connected to both ends of the lifting seat, and an annular support surface is arranged on the outer side of the lifting frame for the support rods to abut.

[0026] By adopting the technical scheme, the lifting seat is not prone to sagging, and the traction plate is ensured to be horizontally inserted into the sponge.

[0027] In summary, the present application has the following beneficial effects:

[0028] 1. By arranging the traction plate, the contact area of the traction plate with the sponge is large, the bearing force is good compared to the fixed needle, and large-size sponge is more easily lifted; and the spacing of the traction plate can be set as the cutting spacing of the sponge, so as to play a role in pre-cutting the sponge, and the sponge is directly cut along the traction plate after being lifted to the top end, so that the traction plate does not damage the sponge.

[0029] 2. By arranging the insertion mechanism, the insertion mechanism is driven by the chain drive mechanism, so as to realize the insertion of the traction plate at the lower end of the guide frame and the pulling out of the traction plate at the upper end of the guide frame, without the need to arrange a motor, which is relatively energy-saving and has a reliable and stable structure. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structure schematic view of a sponge foaming traction device for shoe materials according to an embodiment of the present application;

[0031] Figure 2 is a structure schematic view of a guide frame, a forming hopper, a sponge feeding pipe, a traction frame and connecting rods according to an embodiment of the present application;

[0032] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0033] Figure 4 This is a schematic diagram of the lifting mechanism according to an embodiment of this application;

[0034] Figure 5 yes Figure 4 Enlarged view of region B in the middle;

[0035] Figure 6 This is a cross-sectional schematic diagram of the lifting seat, pressure bar, hinge bar, and traction plate according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Guide frame; 11. Guide cavity; 12. Guide hole; 2. Lifting mechanism; 21. Lifting frame; 211. Annular support surface; 22. Chain drive mechanism; 221. Rotating shaft; 222. Drive sprocket; 223. Drive chain; 224. Drive motor; 23. Lifting seat; 231. Support rod; 24. Traction plate; 241. Pin; 25. Insertion mechanism; 251. Extrusion bar; 2511. Extrusion slope; 252. Pressure bar; 2521. Pressure slope; 253. Hinge bar; 254. Return spring; 255. Hinge shaft; 3. Forming bucket; 4. Sponge feed pipe; 5. Traction frame; 51. Bottom ring; 52. Traction seat; 53. Traction chain; 6. Traction rope; 7. Connecting rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0038] This application discloses a sponge foaming traction device for shoe materials.

[0039] Reference Figure 1 , Figure 2 A foaming traction device for shoe materials includes a cylindrical guide frame 1 with its axis arranged vertically and a guide cavity 11 provided inside the guide frame 1 for lifting and moving a cylindrical sponge from bottom to top.

[0040] Reference Figure 2 , Figure 3The lower end of the guide frame 1 is fixedly connected with three connecting rods 7 which are fixedly connected at equal intervals, and the lower end of the three connecting rods 7 is fixedly connected with a forming hopper 3. The sponge is sprayed from the foaming machine into the forming hopper 3 through the sponge feeding pipe 4 and foams and expands in the forming hopper 3. The forming hopper 3 is provided with a traction frame 5, the upper end of the traction frame 5 is fixedly connected with a traction rope 6, the upper end of the traction rope 6 extends out of the guide frame 1 and is connected with a winch. The operator can determine the forming condition of the sponge by observing the area between the forming hopper 3 and the guide frame 1, and after the sponge is formed to completely cover the traction frame 5, the winch is driven to pull the sponge to the lifting frame 21 to realize the initial foaming traction of the sponge.

[0041] Referring to Figure 2 , Figure 3 The traction frame 5 includes a bottom ring 51, a traction seat 52 arranged on the upper side of the bottom ring 51, and a plurality of traction chains 53 fixedly connected between the bottom ring 51 and the traction seat 52. The outer diameter of the bottom ring 51 is smaller than the inner diameter of the guide frame 1, the traction seat 52 is fixedly connected with the traction rope 6, and the traction chains 53 are arranged at four equal intervals along the circumference of the bottom ring 51. The traction frame 5 is conical in shape, which facilitates the covering of the sponge and ensures the traction effect of the traction frame 5 on the front section of the sponge.

[0042] Referring to Figure 1 After the sponge is pulled into the guide frame 1, if only the traction frame 5 is used for subsequent traction, the rear section of the sponge is prone to breakage, which cannot guarantee the traction effect. Therefore, four lifting mechanisms 2 are arranged at equal intervals on the outer side of the guide frame 1 to assist the lifting and traction of the sponge in the guide frame 1.

[0043] Referring to Figure 4 , Figure 5 The lifting mechanism 2 includes a lifting frame 21 arranged on the outer side of the guide frame 1, a chain drive mechanism 22 installed on the lifting frame 21, a lifting seat 23 connected with the chain drive mechanism 22, a traction plate 24 slidingly connected with the lifting seat 23, and an insertion mechanism 25 for driving the traction plate 24 to insert into the sponge. The lifting seat 23 is arranged at four equal intervals along the chain drive mechanism 22. After the chain drive mechanism 22 is started, the lifting seat 23 close to the lifting frame 21 moves from bottom to top, and the lifting seat 23 away from the lifting frame 21 moves from top to bottom, realizing the circular movement of the lifting seat 23. When the lifting seat 23 moves to the outer side of the lower end of the guide frame 1, the insertion mechanism 25 controls the traction plate 24 to insert into the sponge, and the plurality of traction plates 24 continue to move upward with the chain drive mechanism 22, realizing the lifting and traction of the rear section of the sponge.

[0044] It should be noted that the upper side of the guide frame 1 can be provided with a cutting mechanism. The cutting mechanism adopts a saw blade cutting mode. After the cylindrical sponge is moved to the upper side of the guide frame 1, the cutting mechanism is used for transverse cutting. Firstly, the sponge at the traction frame 5 can be separated from the sponge below. Secondly, the cylindrical sponge can be cut into multiple segments, which is convenient for transportation and storage. The cutting mechanism directly cuts along the socket formed after the traction plate 24 is inserted into the sponge. Thus, the sponge will not be damaged due to the insertion of the traction plate 24. The traction plate 24 can also play a role in pre-cutting the sponge. In addition, the distance between the two adjacent lifting seats 23 is equivalent to the cutting distance of the sponge, that is, the length of each cylindrical sponge.

[0045] With reference to Figure 4 , the chain drive mechanism 22 comprises two rotating shafts 221 arranged at the upper and lower ends of the lifting frame 21 respectively. The rotating shafts 221 are rotationally connected with the lifting frame 21. Driving sprockets 222 are fixedly sleeved at the two ends of the rotating shafts 221. Driving chains 223 are transmissionally sleeved between the upper and lower corresponding driving sprockets 222. The lifting seats 23 are fixedly connected between the outer sides of the two driving chains 223. One end of the rotating shaft 221 located at the lower side is provided with a driving motor 224. The driving motor 224 is a speed reducer motor, which can drive the rotating shaft 221 to rotate, thereby driving the driving sprockets 222 to rotate, so that the driving chains 223 drive the lifting seats 23 to rotate circularly.

[0046] With reference to Figure 4 , Figure 5 , in order to prevent the lifting seat 23 from sagging due to its own gravity, the lifting seat 23 is fixedly connected with a support rod 231 at both ends. The outer side of the lifting frame 21 is provided with an annular support surface 211 for the support rod 231 to abut. The distance between the annular support surface 211 and each part of the driving chain 223 is consistent. Therefore, during the circular rotation of the lifting seat 23 driven by the chain drive mechanism 22, the support rod 231 can be supported to always abut the annular support surface 211, thereby preventing the lifting seat 23 from sagging and ensuring that the traction plate 24 can be inserted into the sponge horizontally.

[0047] With reference to Figure 2 , Figure 5 , the guide frame 1 is provided with a guide hole 12 for the traction plate 24 to pass through and vertically slide, which serves as a positioning guide plate for the traction plate 24. The end of the traction plate 24 close to the guide frame 1 is isosceles triangle-shaped. A plurality of insertion needles 241 are fixedly connected at intervals at the end of the traction plate 24 close to the guide frame 1. When the insertion mechanism 25 pushes the traction plate 24 to move close to the guide frame 1, the insertion needles 241 are inserted into the sponge first, and then the sharp end of the traction plate 24 is inserted into the sponge, until the traction plate 24 is mostly inserted. The sponge is lifted by being inserted by the traction plate 24, and the foaming traction work is completed. The contact area between the traction plate 24 and the sponge is large, and the support force of the traction plate 24 is better than that of the fixed needle, so it is easier to pull and lift large-size sponges.

[0048] With reference to Figure 2 , Figure 6 , the insertion mechanism 25 comprises an extrusion strip 251 fixedly connected with the guide frame 1, a pressure strip 252 slidably connected with the lifting seat 23, and a hinged strip 253 hingedly connected with the lifting seat 23. The extrusion strip 251 is arranged vertically along the length direction, and is located at one side of the guide hole 12. The pressure strip 252 slides towards or away from the guide frame 1 relative to the lifting seat 23. The lower end of the extrusion strip 251 is provided with an extrusion inclined surface 2511, and the end of the pressure strip 252 close to the extrusion strip 251 is provided with a pressure inclined surface 2521 matched with the extrusion inclined surface 2511. When the lifting seat 23 moves from bottom to top and approaches the extrusion strip 251, the pressure strip 252 is subjected to a force moving away from the guide frame 1 through the cooperation of the extrusion inclined surface 2511 and the pressure inclined surface 2521, until the pressure strip 252 is separated from the upper end of the extrusion strip 251.

[0049] With reference to Figure 5 , Figure 6 , the middle part of the hinged strip 253 is hingedly connected with the lifting seat 23 through a hinge shaft 255, one end of the hinged strip 253 is arranged on the side away from the guide frame 1 of the pressure strip 252, and the other end is arranged on the side away from the guide frame 1 of the traction plate 24. Therefore, after the pressure strip 252 moves away from the guide frame 1, the traction plate 24 can be pushed to approach the guide frame 1 through the swing of the hinged strip 253, so that the traction plate 24 is inserted into the sponge. The upper end of the traction plate 24 is fixedly connected with a connecting plate, the lifting seat 23 is provided with a connecting hole through which the connecting plate slides, a return spring 254 is fixedly connected between the end of the connecting plate close to the guide frame 1 and the inner wall of the connecting hole, and the return spring 254 applies a force to the traction plate 24 to move away from the guide frame 1. Therefore, after the pressure strip 252 is separated from the upper end of the extrusion strip 251, the return spring 254 can push the traction plate 24 to reset, and at the same time the hinged strip 253 rotates to drive the pressure strip 252 to extend.

[0050] With reference to Figure 6 , the distance from the axis of the hinge shaft 255 to the end of the hinged strip 253 close to the pressure strip 252 is a, and the length of the hinged strip 253 is b, and a / b is less than one third. Therefore, a small distance movement of the pressure strip 252 can drive the traction plate 24 to be inserted into the sponge by a large extent. The insertion mechanism 25 can be driven by the chain driving mechanism 22 to realize the insertion of the traction plate 24 at the lower end of the guide frame 1 and the pulling out of the traction plate 24 at the upper end of the guide frame 1, without the need to set a motor, which is relatively energy-saving and has a reliable and stable structure.

[0051] The implementation principle of the sponge foaming traction device for shoe materials in the embodiment of the application is as follows:

[0052] The sponge enters the forming hopper 3 along the sponge feeding pipe 4 and foams and expands in the forming hopper 3 to coat the traction frame 5, the traction frame 5 first drives the sponge to be lifted into the guide frame 1, then the chain driving mechanism 22 is started, when one of the lifting seats 23 moves to the lower end of the guide frame 1, the pressure strip 252 is extruded by the extrusion strip 251, so that the traction plate 24 is inserted into the sponge, then the traction plate 24 continuously moves upward under the driving of the driving chain 223, drives the sponge to be lifted, finally the sponge moves out from the upper end of the guide frame 1 and is segmented and cut along the insertion port of the traction plate 24 by the cutting mechanism.

[0053] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A sponge foaming traction device for shoe material, comprising a guide frame (1), a guide cavity (11) for sponge movement is arranged inside the guide frame (1), characterized in that: A plurality of lifting mechanisms (2) are arranged on the outer side of the guide frame (1) in a circumferential direction. The lifting mechanism (2) comprises a lifting frame (21) arranged on the outer side of the guide frame (1), a chain driving mechanism (22) mounted on the lifting frame (21), a lifting seat (23) connected with the chain driving mechanism (22), a traction plate (24) slidingly connected with the lifting seat (23), and an insertion mechanism (25) for driving the traction plate (24) to insert into the sponge. The guide frame (1) is provided with a guide hole (12) through which the traction plate (24) vertically slides. The insertion mechanism (25) comprises a pressing strip (251) fixedly connected with the guide frame (1), a pressure receiving strip (252) slidingly connected with the lifting seat (23), and a hinged strip (253) hingedly connected with the lifting seat (23), the length direction of the pressing strip (251) is arranged in a vertical direction, the lower end of the pressing strip (251) is provided with a pressing inclined surface (2511), the end of the pressure receiving strip (252) close to the pressing strip (251) is provided with a pressure receiving inclined surface (2521) matched with the pressing inclined surface (2511), one end of the hinged strip (253) is arranged on the side of the pressure receiving strip (252) away from the guide frame (1), and the other end is arranged on the side of the traction plate (24) away from the guide frame (1), a return spring (254) is connected between the lifting seat (23) and the traction plate (24), and the return spring (254) applies a force to the traction plate (24) to move away from the guide frame (1).

2. The sponge foamed traction device for footwear of claim 1, wherein: The hinged strip (253) and the lifting seat (23) are hingedly connected through a hinge shaft (255), and the distance from the axis of the hinge shaft (255) to the end of the hinged strip (253) close to the pressure receiving strip (252) is less than one third of the length of the hinged strip (253).

3. The sponge foamed traction device for footwear of claim 1, wherein: The end of the traction plate (24) close to the guide frame (1) is triangular.

4. The sponge foamed traction device for footwear of claim 3, wherein: The end of the traction plate (24) close to the guide frame (1) is connected with a plurality of insertion pins (241).

5. The sponge foamed traction device for footwear of claim 1, wherein: The lower end of the guide frame (1) is connected with a forming hopper (3), the lower end of the forming hopper (3) is connected with a sponge feeding pipe (4), the forming hopper (3) is provided with a traction frame (5) inside, and the upper end of the traction frame (5) is connected with a traction rope (6).

6. The sponge foamed traction device for footwear of claim 5, wherein: A plurality of connecting rods (7) are connected between the lower end of the forming hopper (3) and the guide frame (1).

7. The sponge foamed traction device for footwear of claim 5, wherein: The traction frame (5) comprises a bottom ring (51), a traction seat (52) arranged on the upper side of the bottom ring (51), and a plurality of traction chains (53) connected between the bottom ring (51) and the traction seat (52).

8. The sponge foamed traction device for footwear of claim 1, wherein: The chain driving mechanism (22) comprises two rotating shafts (221) rotatably connected with the lifting frame (21), driving sprockets (222) fixedly sleeved on the rotating shafts (221), driving chains (223) drivingly sleeved between the two driving sprockets (222), and a driving motor (224) for driving one of the rotating shafts (221) to rotate, the lifting seat (23) is fixedly connected with the driving chains (223), and a plurality of lifting seats (23) are arranged at intervals along the driving chains (223).

9. A sponge foamed traction device for footwear according to claim 8, characterized in that: The lifting seat (23) is connected with support rods (231) at both ends, and the outer side of the lifting frame (21) is provided with an annular support surface (211) for the support rods (231) to abut.

Images