CN220219416U

CN220219416U - Shoe last assembly

Info

Publication number: CN220219416U
Application number: CN202320974030.7U
Authority: CN
Inventors: 郑国宏; 赖有金; 尹奕雯
Original assignee: Wenzhou Menglani Shoes Co ltd
Current assignee: Wenzhou Menglani Shoes Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-12-22
Anticipated expiration: 2033-04-25

Abstract

The utility model discloses a shoe tree assembly, which comprises a shoe tree body and a base, wherein the base comprises a connecting block, a first mounting seat and a second mounting seat, the base is fixedly arranged at the lower end of the shoe tree body, the upper end of the first mounting seat comprises a first positioning mechanism matched and positioned with the connecting block, the second mounting seat is fixedly connected to the lower part of the first mounting seat, the longitudinal relative position between the first mounting seat and the second mounting seat is adjustable, and the second mounting seat comprises a second positioning mechanism matched and positioned with a clamp of a production line carrier or a sole injection molding machine and a third positioning mechanism matched and positioned with a mechanical arm. The shoe last assembly of the utility model can adjust the coordinate position of the shoe last body to be suitable for the continuous upper injection molding shoe making production line with different matching standards.

Description

Shoe last assembly

Technical Field

The present utility model relates to a last assembly.

Background

The shoe last is a shoe forming mold, and the shoe last not only determines the shoe shape and style, but also has a critical effect on whether the shoe size fits the foot. Today, last plays an important role in the automated production process of shoes as well. The shoe making process includes the steps of making shoe upper on shoe last, setting the shoe last with shoe upper inside one sole injecting machine, fixing the shoe last with the fixture of the sole injecting machine, connecting the shoe last with the mold of the sole injecting machine, and injecting molten plastic into the mold for solidification to bond the formed sole and the shoe upper together. The injection molding process of the upper is applied to the production of shoes such as leather shoes, cloth shoes, sports shoes, plastic shoes and the like.

In the continuous upper injection molding process, most of the process steps are automatically completed by machines except for manual participation in the production of uppers, for example, a carrier carrying a shoe last is circularly conveyed among various processing stations, a shoe last component is transferred from the carrier to a pneumatic clamp of a sole injection molding machine by using a mechanical arm and matched with a mold to complete the injection molding of the sole, the combination of the sole and the upper is realized, the shoe last is put back on the carrier, and finally, the removal of the shoe last and the like are performed. This requires a precise fit between the last assembly and the equipment of the various stations of the production line, in particular in the course of injection moulding of the soles, a reliable fit between the last and the mould, which requires a precise position of the last coordinates. The existing shoe tree assembly and the equipment of the continuous upper injection molding production line are matched according to the unified standard, and the corresponding relation exists between the equipment and the shoe tree assembly, while the position of the shoe tree body of the traditional shoe tree assembly is fixed and kept unchanged, so that the produced shoe tree assembly can only be suitable for the continuous upper injection molding production line of the specific standard. For manufacturers of last assemblies, it is necessary to develop various types of last assemblies (mainly differing in the last coordinate positions) to accommodate different fit standard production lines, and particularly when a new production line is introduced, the last assemblies used earlier may not be suitable for the new production line, and thus, it is also necessary to purchase the adapted last assemblies again in large quantities, which results in an increase in the purchase cost of the last assemblies.

Conventional last assemblies typically include a last body secured to a base, and a retainer provided on the base. The shoe last assembly is usually required to be matched with a positioning mechanism to realize positioning, and the specific principle is that the positioning mechanism and the positioning part of the base are utilized to realize the integral positioning of the shoe last assembly, so that the shoe last assembly can be reliably and stably maintained, and the production and the processing of each process step can be matched.

Disclosure of Invention

In response to the deficiencies of the prior art, the present utility model provides a last assembly that enables adjustment of the last coordinate position to accommodate different fit standards on a lasting injection molding shoemaking line.

In order to achieve the above object, the present utility model provides a last assembly, including a last body and a base, the base includes an engagement block, a first mounting seat and a second mounting seat, the engagement block is fixedly installed at the lower end of the last body, the upper end of the first mounting seat includes a first positioning mechanism that is cooperatively positioned with the engagement block, the second mounting seat is fixedly connected to the lower portion of the first mounting seat, the longitudinal relative position between the first mounting seat and the second mounting seat is adjustable, the adjustment of the height coordinate position of the last can be achieved, the second mounting seat includes a second positioning mechanism that is cooperatively positioned with a clamp of a production line carrier or a sole injection molding machine, a third positioning mechanism that is cooperatively positioned with a mechanical arm, the second positioning mechanism is also cooperatively positioned with a clamp of the last removal machine, when the second positioning mechanism is connected with the carrier, the last assembly can be synchronously conveyed by the carrier, and when the last assembly moves to a processing station, the assembly can be transferred by the mechanical arm and the clamp can also be matched with the third positioning mechanism to achieve the sole molding machine through the second positioning mechanism and the sole injection molding machine.

Further, the first mount pad is including first supporting shoe, and first supporting shoe is including the mounting hole that runs through its both sides, first positioning mechanism is including the swing setting splint in first supporting shoe both sides, rotate the cam that sets up in the mounting hole, set up the operating handle of first supporting shoe one end, set up the spring between splint and first supporting shoe, the lower extreme butt cooperation of cam and splint, operating handle is connected with the cam and is used for driving the cam rotation, the upper end and the linking piece cooperation centre gripping location of two splint, the middle part and the cooperation swing of first supporting shoe of splint are connected, the spring is used for driving splint lower extreme to keep the butt on the cam. The clamping plate keeps in the state of clamping and positioning with the engagement block under the abutting action of the cam in normal state, when the engagement block needs to be disassembled, the cam is driven to rotate through the operation handle, so that the upper end of the clamping plate swings and opens towards two sides, and the last body and the engagement block can be disassembled and assembled quickly and conveniently.

Further, the first mount pad is including setting up the second supporting shoe in first supporting shoe top, the second supporting shoe is supported with the bottom cooperation contact of joint piece, first positioning mechanism still including setting up on the second supporting shoe and with the reference column of joint piece bottom cooperation grafting location, can prevent to produce relative movement when the centre gripping location through the cooperation of reference column and splint to improve the positioning effect to the joint piece, the horizontal relative position between second supporting shoe and the first supporting shoe is adjustable, through the relative position of adjustment first supporting shoe and the second supporting shoe, can adjust the horizontal coordinate of last body, makes it can keep unanimous.

Further, sliding fit along the transverse direction is formed between the second support block and the first support block, and an adjusting screw for adjusting the relative position of the first support block and the second support block is arranged between the first support block and the second support block in a penetrating mode. The second supporting block and the first supporting block form sliding fit, and the relative positions between the first supporting block and the second supporting block can be adjusted conveniently and laborsaving by driving the adjusting screws penetrating through the first supporting block and the second supporting block to rotate.

Further, the lower extreme of second supporting shoe is provided with first spout, and the upper end of first supporting shoe is led to slide with first spout cooperation, adopts this kind of sliding fit mode, simple structure easily carries out, through the sliding fit of first spout and first supporting shoe upper end, also can avoid producing the interference with splint.

Further, the second supporting block comprises a second sliding groove, a first sliding block matched with the second sliding groove for guiding sliding is arranged at the upper end of the first supporting block, and the first sliding block and the second supporting block form limit matching so as to inhibit the first supporting block and the second supporting block from moving relatively along the longitudinal direction. The sliding fit mode is simple in structure and easy to implement, and interference with the clamping plate can be avoided through the sliding fit of the first sliding block and the second sliding groove. In addition, the spacing cooperation of first slider and second supporting shoe can also prevent to separate mutually between second supporting shoe and the first supporting shoe, prevents that the part from dropping, and is more reliable and stable during the use.

Further, the first supporting block comprises a third sliding groove, the second supporting block comprises a second sliding block, the second sliding block and the third sliding groove form sliding fit, the adjusting screw is rotationally arranged in the third sliding groove and forms screw joint fit with the second sliding block, and when the adjusting screw rotates, the second sliding block can be driven to slide along the third sliding groove by utilizing the screw joint of the adjusting screw and the second sliding block, and meanwhile the second supporting block can be driven to slide relative to the first supporting block. By adopting the adjusting mode, finer adjustment can be realized, the adjusting process is labor-saving, and no movement can be generated after the adjustment.

Further, a cushion block for adjusting the distance between the first installation seat and the second installation seat is arranged between the first installation seat and the second installation seat, and the first installation seat, the second installation seat and the cushion block are fixedly connected through a plurality of fasteners. Through dispose the cushion of different quantity or thickness between first mount pad and second mount pad, can realize the adjustment to the high coordinate position of last body, the suitability is wider.

Further, the second positioning mechanism comprises a first positioning hole arranged at the lower end of the second mounting seat and positioning grooves arranged at two sides of the lower part of the second mounting seat. The first positioning hole and the positioning groove are consistent with the positioning structure of the base of the standard shoe last assembly, so that the first positioning hole and the positioning groove can be matched with a transport carrier of the shoe last assembly, a clamp of a sole injection molding machine, a clamp of a last removing machine and the like on a standard continuous upper injection molding production line for positioning.

Further, the third positioning mechanism comprises second positioning holes arranged on two sides of the lower portion of the second mounting seat, and the second positioning holes are used for being matched with the mechanical arm to grasp.

The utility model has the beneficial effects that: the coordinate position of the shoe last body of the shoe last assembly can be adjusted, so that the problem of suitability between equipment of different continuous upper injection molding shoe making production lines can be solved, the shoe last assembly can be applied to different continuous upper injection molding shoe making production lines, the configuration cost of the shoe last assembly can be reduced, and the popularization degree of the production line is improved. And the device also has the advantages of simple structure, convenient adjustment and operation, easy processing and manufacturing, and the like.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is a side view of an embodiment of the present utility model;

FIG. 3 is an exploded view of FIG. 1 showing a first mount and a second mount according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of the last assembly of FIG. 2 taken along line A-A;

FIG. 5 is an exploded view of FIG. 2 showing the first mount and the second mount according to an embodiment of the present utility model;

FIG. 6 is a block diagram of a first support block according to an embodiment of the present utility model in FIG. 1;

FIG. 7 is a block diagram of a first support block according to an embodiment of the present utility model in FIG. 2;

FIG. 8 is an assembled schematic view 1 of a pad according to an embodiment of the present utility model;

fig. 9 is an assembly schematic diagram 2 of a pad according to an embodiment of the present utility model.

Detailed Description

Examples of last assemblies of the present utility model are shown in fig. 1-9: including last body a, base, the base is including linking block b, first mount pad 1, second mount pad 2 is used for cooperating with the carrier of group's shoemaking production line and even group's shoemaking production line's other station equipment of moulding plastics between fixed, wherein including the anchor clamps of sole injection molding machine, be used for carrying out the arm etc. that shifts shoe last subassembly between carrier and equipment, in the course of the work of sole injection molding machine, the last body that needs to drive the shoe last subassembly through anchor clamps realizes operations such as compound die, drawing of patterns with the sole mould, first mount pad 1 upper end is including the first positioning mechanism that cooperates the location with linking block b, second mount pad 2 is connected and is fixed in the lower part of first mount pad 1, the vertical relative position between first mount pad 1 and the second mount pad 2 is adjustable, second mount pad 2 is including the second positioning mechanism that is used for carrying out the anchor clamps cooperation location with the carrier or sole injection molding machine, be used for carrying out the third positioning mechanism that matches the arm location with the shoe last subassembly, can also be realized simultaneously carrying out the shaping machine with the carrier and carrying out the second positioning mechanism that can be used for carrying out the cooperation location with the shoe last subassembly to the equipment to the second positioning mechanism through the carrier, can also carrying out the cooperation with the second positioning mechanism to carry out the sole positioning mechanism to the carrier positioning mechanism when the sole moulding machine and carrying the second positioning mechanism is equipped with the second positioning mechanism.

The first mounting seat 1 comprises a first supporting block 10, the first supporting block 10 comprises mounting holes 101 penetrating through two sides of the first supporting block 10, the first positioning mechanism comprises clamping plates 31 arranged on two sides of the first supporting block 10 in a swinging mode, a cam 32 arranged in the mounting holes 101 in a rotating mode, an operating handle 33 arranged at one end of the first supporting block, a spring arranged between the clamping plates 31 and the first supporting block 10, through holes 102 for installing the spring are formed in two sides of the first supporting block 10, the cam 32 is in butt fit with the lower ends of the clamping plates 31, the operating handle 33 is connected with the cam 32 and used for driving the cam 32 to rotate, the upper ends of the two clamping plates 31 are provided with hook parts which extend inwards and are in matched clamping positioning with positioning grooves b1 on the connecting blocks b, the middle of the clamping plates 31 are in matched swinging connection with the first supporting block 10, in this embodiment, connecting rods 103 are arranged on two sides of the first supporting block 10, the middle of the clamping plates 31 are provided with sleeve holes matched with the connecting rods 103, the inner diameters of the sleeve holes are larger than the outer diameters of the connecting rods 103, the clamping plates 31 can swing relative to the first supporting block 10, the clamping plates 31 are in the direction of the lower ends of the connecting rods 31, and the connecting rods are used for preventing the connecting rods from falling off relative to the connecting rods 31, and the connecting rods 31 are used for preventing the connecting rods from being in the butt joint connection between the two connecting rods 31 and the connecting rods 31.

When the connecting block b needs to be disassembled, the operating handle 33 drives the cam 32 to rotate, so that the upper end of the clamping plate 31 swings and opens to two sides, and the shoe tree assembly can be disassembled quickly and conveniently.

The first mounting seat 1 comprises a second supporting block 11 arranged above the first supporting block 10, the second supporting block 11 is used for being in contact with and supporting with the bottom of a connecting block b of the shoe tree assembly, the connection matching effect with the shoe tree assembly can be improved, the first positioning mechanism further comprises a positioning column 111 arranged on the second supporting block 11 and matched with the bottom of the connecting block b of the shoe tree assembly for plugging and positioning, relative movement can be prevented when the connecting block b is clamped and positioned through the matching of the positioning column 111 and the clamping plate 31, the positioning effect on the shoe tree body a and the connecting block b is improved, the transverse relative position between the second supporting block 11 and the first supporting block 10 is adjustable, and the transverse coordinate of the shoe tree body can be adjusted by adjusting the relative position of the first supporting block 10 and the second supporting block 11.

Through above-mentioned first positioning mechanism, can dismantle last body a and linking piece b wholly, in order to conveniently carry out the delasting with the delaminating machine cooperation, when can adopt flexible last body a (last body a comprises two parts that can move relatively), accessible first positioning mechanism is with last body a and linking piece b from first mount pad 1 upper end pull down, connects last body a and linking piece b and delaminating machine and realizes the deformation of last body a to can conveniently take off the last.

In this embodiment, the lower end of the second supporting block 11 is provided with a first chute 112, the upper end of the first supporting block 10 is guided to slide in cooperation with the first chute 112, besides adopting such a sliding cooperation mode, the second supporting block 11 includes a second chute 113, the upper end of the first supporting block 10 is provided with a first sliding block 104 that slides in cooperation with the second chute 113, the first sliding block 104 adopts a screw fixed at the upper end of the first supporting block 10, the second chute 113 is composed of a wide slot and a narrow slot, the stem portion of the screw slides in cooperation with the narrow slot, the head portion of the screw slides in cooperation with the wide slot, the narrow slot is located below the wide slot, and the head portion of the screw can also cooperate with the second supporting block 11 to prevent the first supporting block 10 and the second supporting block 11 from moving away in opposite directions longitudinally, so as to avoid the second supporting block 11 from falling off the first supporting block 10, and is more stable in use.

By adopting the sliding fit mode, the structure is simple, the processing is easy, the sliding fit in a specific direction between the first supporting block 10 and the second supporting block 11 can be kept, and interference between the second supporting block 11 and the clamping plate can be avoided.

The first supporting block 10 further comprises a third sliding groove 105, an adjusting screw 106 for adjusting the relative position of the first supporting block 10 and the second supporting block 11 is arranged between the first supporting block 10 and the second supporting block 11 in a penetrating mode, the second supporting block 11 comprises a second sliding block 114, the second sliding block 114 and the third sliding groove 105 form sliding fit, the adjusting screw 106 is rotatably arranged in the third sliding groove 105 and is in threaded fit with the second sliding block 114, an opening for exposing the adjusting screw 106 is formed in the end portion of the first supporting block 10, the adjusting screw 106 can be conveniently driven to rotate through a tool such as a screwdriver, when the adjusting screw 106 rotates, the adjusting screw 106 is matched with threads of the second sliding block 114, the second sliding block 114 can be driven to slide along the third sliding groove 105, and meanwhile the second supporting block 11 can be driven to slide relative to the first supporting block 10. By adopting the adjusting mode, finer adjustment can be realized, the adjusting process is labor-saving, and no movement can be generated after the adjustment. By adjusting the relative positions of the second support blocks 11 and the first support blocks 10, the lateral coordinates of the last can be adjusted.

As shown in fig. 8 and 9, a cushion block 3 for adjusting the distance between the first mounting seat 1 and the second mounting seat 2 is arranged between the first mounting seat 1 and the second mounting seat 2, and the first mounting seat 1, the second mounting seat 2 and the cushion block 3 are fixedly connected through a plurality of fasteners 4. By arranging the cushion blocks 3 with different numbers or thicknesses between the first mounting seat 1 and the second mounting seat 2, the adjustment of the heights of the last bodies can be realized, and the applicability of the last bodies is improved. The upper and lower both ends of cushion 3 respectively with first mount pad 1 and the contact support of second mount pad 2, cushion 3 also wears to establish on fastener 4 simultaneously, makes the installation of cushion 3 more stable, reliable.

The second positioning mechanism comprises a first positioning hole 51 arranged at the lower end of the second mounting seat 2 and positioning grooves 52 arranged at two sides of the lower part of the second mounting seat 2. The first positioning hole 51 and the positioning groove 52 are consistent with the positioning structure of the base of the standard shoe last assembly, so that the direct positioning matching with the transportation carrier of the standard shoe last assembly, the clamp of the sole injection molding machine and the like can be realized. I.e., a positioning mechanism that can be used to mate with a positioning structure on the base of a conventional standard last assembly, can also be directly mated with the second positioning mechanism of the present embodiment.

The third positioning mechanism comprises second positioning holes 6 arranged on two sides of the lower portion of the second mounting seat 2, and the second positioning holes 6 are arranged to be matched with the mechanical arm for grabbing. A robotic arm that can be used to grasp in cooperation with the base of a conventional standard last assembly can also directly grasp in cooperation with the second locating hole 6 of the second mount 2.

The last body a and the linking block b are matched in a sliding insertion manner along the transverse direction, and meanwhile, the longitudinal limiting fixed installation matching is formed, and after the last body a and the linking block b are inserted in the insertion manner, locking is achieved through bolts which penetrate through the last body a and the linking block b in the lateral direction at the same time, so that the last body a and the linking block b are prevented from being separated from each other.

The above embodiment is only one of the preferred embodiments of the present utility model, and common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are included in the scope of the present utility model.

Claims

1. A last assembly comprising a last body, a base, characterized in that: the base comprises a connecting block, a first mounting seat and a second mounting seat, wherein the connecting block is fixedly arranged at the lower end of the shoe last body, the upper end of the first mounting seat comprises a first positioning mechanism matched and positioned with the connecting block, the second mounting seat is fixedly connected with the lower part of the first mounting seat, the longitudinal relative position between the first mounting seat and the second mounting seat is adjustable, and the second mounting seat comprises a second positioning mechanism matched and positioned with a clamp of a production line carrier or a sole injection molding machine and a third positioning mechanism matched and positioned with the mechanical arm.

2. The last assembly according to claim 1, wherein: the first mounting seat comprises a first supporting block, the first supporting block comprises mounting holes penetrating through two sides of the first supporting block, the first positioning mechanism comprises clamping plates arranged on two sides of the first supporting block in a swinging mode, a cam arranged in the mounting holes in a rotating mode, an operating handle arranged at one end of the first supporting block, a spring arranged between the clamping plates and the first supporting block, the lower ends of the cam and the clamping plates are in butt fit, the operating handle is connected with the cam and used for driving the cam to rotate, the upper ends of the two clamping plates are clamped and positioned in a matched mode, and the lower ends of the driving clamping plates are in butt fit with the cam.

3. The last assembly according to claim 2, wherein: the first mounting seat comprises a second supporting block arranged above the first supporting block, the second supporting block is in contact with the connecting block in a matched mode for supporting, the first positioning mechanism further comprises a positioning column arranged on the second supporting block and in matched insertion positioning with the bottom of the connecting block, and the transverse relative position between the second supporting block and the first supporting block is adjustable.

4. The last assembly according to claim 3, wherein: the second support block and the first support block form sliding fit along the transverse direction, and an adjusting screw for adjusting the relative position of the first support block and the second support block is arranged between the first support block and the second support block in a penetrating way.

5. The last assembly according to claim 4, wherein: the lower extreme of second supporting shoe is provided with first spout, and the upper end of first supporting shoe and first spout cooperation direction slip.

6. The last assembly according to claim 4, wherein: the second supporting block comprises a second sliding groove, a first sliding block matched with the second sliding groove for guiding sliding is arranged at the upper end of the first supporting block, and the first sliding block and the second supporting block form limit matching so as to inhibit the first supporting block and the second supporting block from moving relatively along the longitudinal direction.

7. The last assembly according to claim 4, wherein: the first supporting block comprises a third sliding groove, the second supporting block comprises a second sliding block, the second sliding block and the third sliding groove form sliding fit, and the adjusting screw is rotatably arranged in the third sliding groove and forms threaded fit with the second sliding block.

8. The last assembly according to claim 1, wherein: the cushion block used for adjusting the distance between the first installation seat and the second installation seat is arranged between the first installation seat and the second installation seat, and the first installation seat, the second installation seat and the cushion block are fixedly connected through a plurality of fasteners.

9. The last assembly according to claim 1, wherein: the second positioning mechanism comprises a first positioning hole arranged at the lower end of the second mounting seat and positioning grooves arranged on two sides of the lower part of the second mounting seat.

10. The last assembly according to claim 1, wherein: the third positioning mechanism comprises second positioning holes arranged on two sides of the lower portion of the second mounting seat.