Dilation device and production process

Abstract

The application discloses a kind of distraction devices and production process, belong to distraction appliance technical field, wherein, distraction device: seat body;First chuck is connected with seat body, and first chuck includes first jaw and second jaw;Second chuck is movably connected with seat body, and second chuck can be close to or away from first chuck, and second chuck includes third jaw and fourth jaw, and third jaw is oppositely arranged with first jaw, and fourth jaw is oppositely arranged with second jaw;Opening and closing drive is drivingly connected with first chuck to drive first jaw and second jaw to open, and form first inlet, and opening and closing drive is drivingly connected with second chuck to drive third jaw and fourth jaw to open, and form second inlet, the distraction device can assist worker to realize the operation of inner core into outer shoe cover inner cavity, without worker keeping the distraction state of outer shoe cover, it is favorable to simplify the operation process of inner core into outer shoe cover inner cavity, to improve the production efficiency of shoe back.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of distraction device, in particular to a distraction device and a production process. BACKGROUND

[0002] At present, the back of the shoe of the shoe is mostly connected into one by sewing process of multiple pieces of material inside and outside, and the sewing line is formed at the shoe opening of the back of the shoe connected by sewing, which is easy to scratch the human foot and affect the product appearance.

[0003] In the related art, a few enterprises adopt the way of preparing the inner core and the outer shoe cover, putting the inner core into the inner cavity of the outer shoe cover, and connecting the inner core and the outer shoe cover into one, to prepare the back of the shoe, so as to eliminate the sewing line of the back of the shoe at the shoe opening.

[0004] At present, the operation of putting the inner core into the inner cavity of the outer shoe cover is completely completed by manual work, the worker needs to keep the outer shoe cover in the open state, then gradually put the inner core into the inner cavity of the outer shoe cover, and then adjust the fitting position of the inner core and the outer shoe cover, the production efficiency is low, and it is difficult to meet the use demand of batch production. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a distraction device, which is helpful to assist the worker to put the inner core into the inner cavity of the outer shoe cover, so as to improve the production efficiency of the back of the shoe.

[0006] The present application also proposes a production process.

[0007] According to the distraction device of the first aspect of the present application, the distraction device comprises a seat body, a first chuck connected with the seat body, the first chuck comprising a first clamping jaw and a second clamping jaw, a second chuck movably connected with the seat body, the second chuck being capable of approaching or moving away from the first chuck, the second chuck comprising a third clamping jaw and a fourth clamping jaw, the third clamping jaw being oppositely arranged with the first clamping jaw, and the fourth clamping jaw being oppositely arranged with the second clamping jaw, a opening and closing drive being in transmission connection with the first chuck to drive the first clamping jaw and the second clamping jaw to open and form a first placing entrance, and the opening and closing drive being in transmission connection with the second chuck to drive the third clamping jaw and the fourth clamping jaw to open and form a second placing entrance.

[0008] The stretching device according to the embodiments of the present application has at least the following beneficial effects: when in use, the worker can drive the first clamp head and the second clamp head to move away from each other, so that the first clamp head and the second clamp head are arranged in a spaced manner, and the outer shoe cover is sleeved on the first clamp head, that is, the first clamping jaw and the second clamping jaw are inserted into one end of the inner cavity of the outer shoe cover, then the second clamp head is inserted into the other end of the inner cavity of the outer shoe cover by controlling the second clamp head to move close to the first clamp head, that is, the third clamping jaw and the fourth clamping jaw are inserted into the inner cavity of the outer shoe cover, the opening and closing drive can drive the first clamping jaw and the second clamping jaw to open, and the third clamping jaw and the fourth clamping jaw to open, that is, the first clamping jaw, the second clamping jaw, the third clamping jaw and the fourth clamping jaw jointly stretch the inner cavity of the outer shoe cover to keep the stretched state of the outer shoe cover, and a first placing opening is formed between the first clamping jaw and the second clamping jaw, and a second placing opening is formed between the third clamping jaw and the fourth clamping jaw, so that the worker can place the inner core through the first placing opening or the second placing opening, so that the inner core can be smoothly placed into the inner cavity of the outer shoe cover, and the position of the inner core in the inner cavity can be conveniently adjusted, so that the inner cavity is adapted to the outer shoe cover, that is, the stretching device can assist the worker to realize the operation of inserting the inner core into the inner cavity of the outer shoe cover, and the worker does not need to keep the stretched state of the outer shoe cover at all times, which is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby improving the production efficiency of the shoe back.

[0009] According to some embodiments of the present application, the first clamping jaw and the second clamping jaw are each provided with a first hook portion curved towards the second clamp head, and the third clamping jaw and the fourth clamping jaw are each provided with a second hook portion curved towards the first clamp head.

[0010] Considering that the shape of the shoe back or the inner core is a curved arch shape, in order to improve the fitting degree of the stretched inner cavity of the outer shoe cover and the inner core, the first clamping jaw and the second clamping jaw of the stretching device are each provided with a first hook portion curved towards the second clamp head, and the third clamping jaw and the fourth clamping jaw are each provided with a second hook portion curved towards the first clamp head, after the first clamp head and the second clamp head are inserted into the inner cavity of the outer shoe cover, the first clamp head and the second clamp head are driven by the opening and closing drive to move close to each other, so that the outer shoe cover is stretched and tensioned, and the outer shoe cover forms a shape adapted to the first hook portion and the second hook portion, so that the outer shoe cover is stretched in an arch shape, which is beneficial to facilitate the worker to place the inner core into the inner cavity of the outer shoe cover, and is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby reducing the operation time and improving the production efficiency.

[0011] According to some embodiments of the present application, the first hook portion can be connected to the second hook portion to jointly form an arch shape; and / or,

[0012] The first clamping jaw, the second clamping jaw, the third clamping jaw and the fourth clamping jaw are each in a sheet shape; and / or,

[0013] The width of the first clamping jaw is greater than the width of the second clamping jaw, and the width of the third clamping jaw is greater than the width of the fourth clamping jaw.

[0014] Optionally, the first hook portion can be connected with the second hook portion to jointly form an arch shape, after the first clamp head and the second clamp head are inserted into the inner cavity of the outer shoe cover, the outer shoe cover is stretched and tensioned under the driving of the opening and closing driver, the outer shoe cover forms a shape suitable for the first hook portion and the second hook portion, so that the stretched outer shoe cover and the inner cavity are arranged in an arch shape, which facilitates workers to place the inner core into the inner cavity of the outer shoe cover, and is beneficial to simplify the operation of placing the inner core into the inner cavity of the outer shoe cover, thereby reducing the operation time and improving the production efficiency. The first hook portion can be connected with the second hook portion, which is beneficial to make the shape of the stretched outer shoe cover and the inner cavity more suitable for the inner core, and is beneficial to avoid the problem that the outer shoe cover is separated from the first clamp head and the second clamp head during the insertion of the inner core. Optionally, the first clamp jaw, the second clamp jaw, the third clamp jaw and the fourth clamp jaw are in a sheet shape, which is beneficial to increase the width of the opening diameter of the inner cavity, and facilitates workers to insert the inner core through the opening of the inner cavity, so that the inner core is placed into the inner cavity of the outer shoe cover, which is beneficial to reduce the friction force generated by the contact between the outer shoe cover and the inner core, and is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby reducing the operation time and improving the production efficiency. Optionally, considering that the upper end of the inner core bears a larger pressure of the human heel, the thickness of the upper end of part of the inner core is greater than that of the lower end, the width of the first clamp jaw of the stretching device is greater than that of the second clamp jaw, and the width of the third clamp jaw is greater than that of the fourth clamp jaw, so that the upper end opening diameter of the stretched inner cavity is greater than the lower end opening diameter, thereby improving the adaptability of the inner core and the inner cavity of the outer shoe cover, and is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby reducing the operation time and improving the production efficiency.

[0015] According to some embodiments of the application, the seat body comprises a guide column, the third clamp jaw and the fourth clamp jaw are rotationally connected with the guide column, and the second clamp head can rotate to approach or move away from the first clamp head.

[0016] The third clamp jaw and the fourth clamp jaw are rotationally connected with the guide column, that is, the second clamp head is rotationally connected with the guide column, and the second clamp head can approach or move away from the first clamp head by forward rotation or reverse rotation of the second clamp head and the guide column. When the second clamp head moves away from the first clamp head, workers can place the outer shoe cover between the first clamp head and the second clamp head, and as the first clamp head and the second clamp head approach each other, the first clamp head and the second clamp head are inserted into the two ends of the inner cavity of the outer shoe cover, respectively, and the first clamp jaw and the third clamp jaw are arranged opposite to each other, and the second clamp jaw and the fourth clamp jaw are arranged opposite to each other, so that the opening diameters of the two ends of the inner cavity are consistent, and workers can insert the inner core through the first placement opening or the second placement opening to place the inner core into the inner cavity of the outer shoe cover.

[0017] According to some embodiments of the present application, the seat further comprises a first sleeve block, a third sleeve block and a fourth sleeve block sleeved with the guide column, the first sleeve block is connected with the first clamping jaw, the third sleeve block is connected with the third clamping jaw, the fourth sleeve block is connected with the fourth clamping jaw, the first sleeve block and the third sleeve block are both in sliding connection with the guide column, the third clamping jaw and the fourth clamping jaw are arranged along the axial direction of the guide column, and the first clamping jaw and the second clamping jaw are arranged along the axial direction of the guide column.

[0018] The first sleeve block is connected with the first clamping jaw, the third sleeve block is connected with the third clamping jaw, the fourth sleeve block is connected with the fourth clamping jaw, and the sleeve connection of the third sleeve block and the fourth sleeve block with the guide column can guide the rotation of the third clamping jaw and the fourth clamping jaw, so that the second clamping head can rotate to approach or move away from the first clamping head, when the first clamping head and the second clamping head are in the folded state, the worker can pass the first clamping head and the second clamping head into the two ends of the inner cavity of the shoe back, the first clamping jaw and the second clamping jaw are arranged along the axial direction of the guide column, the third clamping jaw and the fourth clamping jaw are arranged along the axial direction of the guide column, and the first sleeve block and the third sleeve block are both in sliding connection with the guide column, the mutual abutment of the first sleeve block and the guide column can guide the opening and closing of the first clamping jaw and the second clamping jaw, and the mutual abutment of the third sleeve block and the guide column can guide the opening and closing of the third clamping jaw and the fourth clamping jaw.

[0019] According to some embodiments of the present application, the seat further comprises a supporting block in sliding connection with the guide column, the first sleeve block and the third sleeve block are both located above the supporting block, and the opening and closing drive is in transmission connection with the supporting block, so as to drive the supporting block to reciprocatingly slide along the guide column.

[0020] The seat further comprises a supporting block in sliding connection with the guide column, and the first sleeve block and the third sleeve block are both located above the supporting block, under the action of gravity, the first sleeve block or the third sleeve block abuts against the supporting block, the opening and closing drive is in transmission connection with the supporting block, so as to drive the supporting block to reciprocatingly slide along the guide column, when the opening and closing drive drives the supporting block to support the first sleeve block and the third sleeve block, the first clamping jaw and the second clamping jaw can be opened, the third clamping jaw and the fourth clamping jaw can be opened, so as to expand the inner cavity of the outer shoe cover, the worker can pass the inner core through the first placing opening or the second placing opening, so as to place the inner core into the inner cavity, when the operation of placing the inner core into the inner cavity of the outer shoe cover is completed, the opening and closing drive can drive the supporting block to slide downward, so as to make the first sleeve block and the third sleeve block slide downward along the guide column, so as to make the first clamping jaw and the second clamping jaw fold, the third clamping jaw and the fourth clamping jaw fold, so as to eliminate the expansion force applied by the first clamping head and the second clamping head to the outer shoe cover, so that the worker can take down the combined outer shoe cover and the inner core, so as to simplify the operation process and improve the production efficiency of the shoe back.

[0021] According to some embodiments of the present application, the opening and closing drive comprises a cylinder body and a connecting rod, and the two ends of the connecting rod are respectively connected with the supporting block and the cylinder body.

[0022] Specifically, the opening and closing drive includes a cylinder and a connecting rod, two ends of the connecting rod are connected with the supporting block and the movable end of the cylinder respectively, the cylinder can drive the connecting rod to extend or retract, thereby driving the supporting block to slide up and down along the guide column, the cylinder can drive the connecting rod to slide upward, so that the supporting block supports the first sleeve block and the third sleeve block, the first clamping jaw and the second clamping jaw are opened, the third clamping jaw and the fourth clamping jaw are opened, so as to open the inner cavity of the outer shoe cover, the worker can pass the inner core through the first placing opening or the second placing opening, so as to place the inner core into the inner cavity, when the operation of placing the inner core into the inner cavity of the outer shoe cover is completed, the cylinder can drive the connecting rod to slide downward, so that the first sleeve block, the third sleeve block and the supporting block slide downward along the guide column, so that the first clamping jaw and the second clamping jaw are closed, the third clamping jaw and the fourth clamping jaw are closed, so that the worker can take out the combined outer shoe cover and inner core, so as to simplify the operation process and improve the production efficiency of the shoe back.

[0023] According to some embodiments of the present application, a limiting block is further arranged on the guide column, and the limiting block is located above the first sleeve block and the third sleeve block, so as to limit the sliding stroke of the first sleeve block and the third sleeve block.

[0024] Specifically, the guide column is further provided with a limiting block above the first sleeve block and the third sleeve block, the limiting block can limit the upward stroke of the first sleeve block and the third sleeve block, so as to control the length of the opening diameter of the inner cavity of the outer shoe cover, so that the opening diameter of the inner cavity of the outer shoe cover is matched with the shape and size of the inner core, so as to facilitate the worker to place the inner core into the inner cavity of the outer shoe cover, which is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, so as to reduce the operation time and improve the production efficiency.

[0025] According to some embodiments of the present application, the opening device further comprises a tensile elastic member, the third sleeve block is located above the first sleeve block, and two ends of the tensile elastic member are connected with the third sleeve block and the fourth sleeve block respectively.

[0026] The opening device further comprises a tensile elastic member, the third sleeve block is located above the first sleeve block, and two ends of the tensile elastic member are connected with the third sleeve block and the fourth sleeve block respectively, so that the tensile elastic member can exert a pulling force on the third sleeve block and the fourth sleeve block to make them close to each other, and the first sleeve block and the third sleeve block are connected with the guide column to slide, so that the first sleeve block and the third sleeve block have a downward sliding trend, and the first clamping jaw and the second clamping jaw have a closing trend under the action of the tensile elastic member, and the third clamping jaw and the fourth clamping jaw have a closing trend, which cooperates with the driving action of the opening and closing drive, so as to realize the opening and closing of the first clamping head and the second clamping head, and the control is simpler and more reliable.

[0027] According to some embodiments of the present application, the opening device further comprises a first guide rod, a first connecting block, a second connecting block and a second sleeve block sleeved on the guide column, the first connecting block is connected to the first sleeve block and connected to the first clamping jaw, the second connecting block is connected to the second sleeve block and connected to the second clamping jaw, and the first guide rod is connected to one of the first connecting block and the second connecting block and passes through the other.

[0028] In order to improve the stability of the opening and closing of the first clamping jaw and the second clamping jaw, the opening device further comprises a first guide rod, the first clamping jaw and the first sleeve block are connected to the first connecting block, the second clamping jaw and the second sleeve block are connected to the second connecting block, and the first guide rod is connected to one of the first connecting block and the second connecting block and passes through the other, and the first guide rod is connected to one of the first connecting block and the second connecting block and passes through the other. The sliding connection of the first guide rod and the first connecting block or the second connecting block can guide the opening and closing of the first clamping jaw relative to the second clamping jaw, so that the inner cavity of the outer shoe cover is opened to a predetermined shape, and the worker can place the inner core into the inner cavity of the outer shoe cover.

[0029] According to some embodiments of the present application, the opening device further comprises a second guide rod, a third connecting block and a fourth connecting block, the third connecting block is connected to the third sleeve block and connected to the third clamping jaw, the fourth connecting block is connected to the fourth sleeve block and connected to the fourth clamping jaw, and the second guide rod is connected to one of the third connecting block and the fourth connecting block and passes through the other.

[0030] In order to improve the stability of the opening and closing of the third clamping jaw and the fourth clamping jaw, the opening device further comprises a second guide rod, the third clamping jaw and the third sleeve block are connected to the third connecting block, the fourth clamping jaw and the fourth sleeve block are connected to the fourth connecting block, and the second guide rod is connected to one of the third connecting block and the fourth connecting block and passes through the other. The sliding connection of the second guide rod and the third connecting block or the fourth connecting block can guide the opening and closing of the third clamping jaw relative to the fourth clamping jaw, so that the inner cavity of the outer shoe cover is opened to a predetermined shape, and the worker can place the inner core into the inner cavity of the outer shoe cover.

[0031] According to some embodiments of the present application, the opening device further comprises a rotary drive, the rotary drive is in transmission connection with the second clamping head to drive the second clamping head to approach or move away from the first clamping head.

[0032] The opening device further comprises a rotary drive, the rotary drive is in transmission connection with the second clamping head, that is, the opening device can automatically drive the second clamping head to approach or move away from the first clamping head, which is beneficial to improve the automation degree of the opening device, so as to facilitate the worker to realize the operation of opening the outer shoe cover, and is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, so as to reduce the operation time and improve the production efficiency.

[0033] According to the production process of the second aspect of the present application, the opening device as shown in the first aspect is applied, and the production process comprises:

[0034] The outer shoe cover and the inner core are provided in reserve, and the outer shoe cover has an inner cavity arranged through it;

[0035] The second clamp head is away from the first clamp head, and the outer shoe cover is sleeved on the first clamp head;

[0036] The second clamp head is close to the first clamp head, so that the first clamp head and the second clamp head are respectively inserted into two ends of the inner cavity;

[0037] The opening and closing drive drives the first clamp jaw and the second clamp jaw to open the inner cavity, and the third clamp jaw and the fourth clamp jaw to open the inner cavity;

[0038] The inner core is placed into the inner cavity from the first placing opening or the second placing opening.

[0039] The production process of the embodiment of the present application has at least the following beneficial effects: when in use, the worker can drive the first clamp head and the second clamp head to be away from each other, so that the first clamp head and the second clamp head are arranged at intervals, and the outer shoe cover is sleeved on the first clamp head, that is, the first clamp jaw and the second clamp jaw are inserted into one end of the inner cavity of the outer shoe cover, then by controlling the second clamp head to be close to the first clamp head, the second clamp head is inserted into the other end of the inner cavity of the outer shoe cover, that is, the third clamp jaw and the fourth clamp jaw are inserted into the inner cavity of the outer shoe cover, the opening and closing drive can drive the first clamp jaw and the second clamp jaw to open, and the third clamp jaw and the fourth clamp jaw to open, that is, the first clamp jaw, the second clamp jaw, the third clamp jaw and the fourth clamp jaw jointly open the inner cavity of the outer shoe cover, to maintain the open state of the outer shoe cover, and the first placing opening is formed between the first clamp jaw and the second clamp jaw, and the second placing opening is formed between the third clamp jaw and the fourth clamp jaw, so that the worker can pass the inner core through the first placing opening or the second placing opening, so that the inner core can be smoothly placed into the inner cavity of the outer shoe cover, and the position of the inner core in the inner cavity can be conveniently adjusted, so that the inner cavity is adapted to the outer shoe cover, that is, the production process can assist the worker to realize the operation of inserting the inner core into the inner cavity of the outer shoe cover, without the worker keeping the open state of the outer shoe cover at all times, which is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby improving the production efficiency of the shoe back.

[0040] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0041] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0042] Figure 1 It is a schematic diagram of the open device of an embodiment of the present application in the open state of the outer shoe cover;

[0043] Figure 2 It is a schematic diagram of the open device of an embodiment of the present application in the open state of the outer shoe cover;

[0044] Figure 3 Structure diagram of the distraction device of one embodiment of the present application omitting the outer shoe;

[0045] Figure 4 Structure diagram of the distraction device of one embodiment of the present application omitting the outer shoe;

[0046] Figure 5 Structure diagram of the distraction device of one embodiment of the present application omitting the outer shoe; Figure 4 Enlarged view of part A of the distraction device shown in the middle;

[0047] Figure 6 Flow chart of the production process of one embodiment of the present application.

[0048] Reference signs:

[0049] 100, seat body; 110, guide post; 120, first sleeve block; 130, second sleeve block; 140, third sleeve block; 150, fourth sleeve block; 160, supporting block; 170, limiting block;

[0050] 200, first chuck; 210, first clamping jaw; 220, second clamping jaw; 230, first placing entrance; 240, first hook portion;

[0051] 300, second chuck; 310, third clamping jaw; 320, fourth clamping jaw; 330, second placing entrance; 340, second hook portion;

[0052] 400, tensile elastic member;

[0053] 510, first guide rod; 520, first connecting block; 521, first sub-block; 522, first guide block; 530, second connecting block; 531, second sub-block; 532, second guide block; 540, third connecting block; 541, third sub-block; 542, lower extension block; 543, third guide block; 550, fourth connecting block; 551, fourth sub-block; 552, upper extension block; 553, fourth guide block; 560, second guide rod;

[0054] 610, cylinder body; 611, movable end; 620, connecting rod;

[0055] 700, rotary drive. DETAILED DESCRIPTION

[0056] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only for the purpose of explaining the present application, and cannot be understood as limiting the present application.

[0057] In the description of the present application, it needs to be understood that the orientation description, such as the orientation or position relationship indicated by up, down and the like, is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0058] In the description of the present application, more refers to more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0059] In the description of the present application, unless otherwise explicitly limited, the words such as arrangement, installation, connection and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0060] Referring to Figures 1 to 5 The expansion device of one embodiment of the present application includes a seat body 100, a first chuck 200, a second chuck 300 and a opening and closing drive.

[0061] The seat body 100 is used to abut against a support plane such as a desktop or a ground surface, thereby providing a support function for the first chuck 200, the second chuck 300 and the opening and closing drive. The first chuck 200 and the second chuck 300 are both connected to the seat body 100, and the second chuck 300 is movably connected to the seat body 100, so that the second chuck 300 can move close to or away from the first chuck 200.

[0062] Referring to Figure 2 and Figure 3 The first chuck 200 includes first and second clamping jaws 210 and 220 that are parallel to each other, and the second chuck 300 includes third and fourth clamping jaws 310 and 320 that are parallel to each other, and the first clamping jaw 210 is arranged opposite to the third clamping jaw 310, and the second clamping jaw 220 is arranged opposite to the fourth clamping jaw 320.

[0063] The opening and closing drive is in transmission connection with the first chuck 200, so as to drive the first and second clamping jaws 210 and 220 to open or close, and the first and second clamping jaws 210 and 220 can form a first placing opening 230 after being opened. The opening and closing drive is in transmission connection with the second chuck 300, so as to drive the third and fourth clamping jaws 310 and 320 to open or close, and the third and fourth clamping jaws 310 and 320 can form a second placing opening 330 after being opened.

[0064] In use, the worker can drive the first clamp head 200 and the second clamp head 300 to move away from each other, so that the first clamp head 200 and the second clamp head 300 are arranged in a spaced manner, and the outer shoe cover is sleeved at the first clamp head 200, that is, the first clamping jaw 210 and the second clamping jaw 220 are inserted into one end of the inner cavity of the outer shoe cover, and then by controlling the second clamp head 300 to move close to the first clamp head 200, the second clamp head 300 is inserted into the other end of the inner cavity of the outer shoe cover, that is, the third clamping jaw 310 and the fourth clamping jaw 320 are inserted into the inner cavity of the outer shoe cover, and the opening and closing drive can drive the first clamping jaw 210 and the second clamping jaw 220 to open, and the third clamping jaw 310 and the fourth clamping jaw 320 to open, that is, the first clamping jaw 210, the second clamping jaw 220, the third clamping jaw 310 and the fourth clamping jaw 320 jointly expand the inner cavity of the outer shoe cover, so as to maintain the expansion state of the outer shoe cover, and a first placement opening 230 is formed between the first clamping jaw 210 and the second clamping jaw 220, and a second placement opening 330 is formed between the third clamping jaw 310 and the fourth clamping jaw 320, and the worker can pass the inner core through the first placement opening 230 or the second placement opening 330, so that the inner core can be smoothly inserted into the inner cavity of the outer shoe cover, and the position of the inner core in the inner cavity can be conveniently adjusted, so that the inner cavity is matched with the outer shoe cover, that is, the expansion device can assist the worker to realize the operation of inserting the inner core into the inner cavity of the outer shoe cover, without the worker needing to keep the outer shoe cover in the expanded state all the time, which is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby improving the production efficiency of the shoe back.

[0065] Compared with the traditional way that the worker needs to keep the outer shoe cover in the expanded state and gradually place the inner core into the outer shoe cover, the expansion device can assist the worker to expand the outer shoe cover and keep the outer shoe cover in the expanded state, the worker can insert the inner core into the inner cavity of the outer shoe cover from one of the first placement opening 230 and the second placement opening 330, and insert the hand into the other of the first placement opening 230 and the second placement opening 330, so that a pulling force close to the inner cavity can be applied to the inner core, so as to adjust the position relationship of the inner core in the inner cavity, so that the inner core is matched with the outer shoe cover, which is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, reduce the operation time, and improve the production efficiency of the shoe back.

[0066] Referring to Figure 3 and Figure 4 It can be understood that considering that the shape of the shoe back or the inner core is arranged in a curved arch shape, in order to improve the matching degree of the expanded inner cavity of the outer shoe cover and the inner core, the first clamping jaw 210 and the second clamping jaw 220 are each provided with a first hook portion 240 curved towards the second clamp head 300, and the third clamping jaw 310 and the fourth clamping jaw 320 are each provided with a second hook portion 340 curved towards the first clamp head 200.

[0067] Referring to Figure 4 and Figure 5As shown, after the first clamp 200 and the second clamp 300 are inserted into the inner cavity of the outer shoe cover, the first hook portion 240 and the second hook portion 340 are also inserted into the inner cavity of the outer shoe cover. Under the driving action of the opening and closing drive, the outer shoe cover is opened and tightened, and the outer shoe cover forms a shape that matches the first hook portion 240 and the second hook portion 340, so that the outer shoe cover is opened in an arch shape, which makes it easier for workers to insert the inner core into the inner cavity of the outer shoe cover. This simplifies the operation process of inserting the inner core into the inner cavity of the outer shoe cover, reduces operation time, and improves production efficiency.

[0068] The first hook portion 240 can be connected with the second hook portion 340 to form an arch together, which helps to make the shape of the outer shoe cover and inner cavity after being stretched more compatible with the inner core, and helps to avoid the problem of the outer shoe cover coming off the first clip 200 and the second clip 300 during the process of inserting the inner core.

[0069] Reference Figure 3 As shown, it can be understood that the first gripper 210, the second gripper 220, the third gripper 310, and the fourth gripper 320 are all plate-shaped. Under the spreading action of the first gripper 210, the second gripper 220, the third gripper 310, and the fourth gripper 320, the inner cavity of the outer shoe cover is opened, which helps to increase the width of the opening diameter of the inner cavity. This makes it easier for workers to pass the inner core through the opening of the inner cavity and insert the inner core into the inner cavity of the outer shoe cover. This helps to reduce the friction force generated by the contact between the outer shoe cover and the inner core, and simplifies the operation process of inserting the inner core into the inner cavity of the outer shoe cover, thereby reducing operation time and improving production efficiency.

[0070] Reference Figure 4 and Figure 5 As shown, it is understandable that, considering the greater pressure the upper end of the inner core bears from the human heel, and the thickness of the upper part of the inner core is greater than that of the lower part, the width of the first claw 210 of the spreading device is greater than the width of the second claw 220, and the width of the third claw 310 is greater than the width of the fourth claw 320. This is to make the upper port diameter of the inner cavity after it is spread larger than the lower port diameter, thereby improving the fit between the inner core and the inner cavity of the outer shoe cover. This simplifies the operation process of placing the inner core into the inner cavity of the outer shoe cover, reducing operation time and improving production efficiency.

[0071] Understandably, the base 100 includes a guide post 110, a first chuck 200 connected to the guide post 110, and a third chuck 310 and a fourth chuck 320 rotatably connected to the guide post 110. That is, the second chuck 300 is rotatably connected to the guide post 110. By rotating the second chuck 300 forward or backward relative to the guide post 110, the second chuck 300 can rotate closer to or further away from the first chuck 200.

[0072] Reference Figure 2 and Figure 3As shown, when the second clamp head 300 is away from the first clamp head 200, the worker can place the outer shoe cover between the first clamp head 200 and the second clamp head 300, and as the first clamp head 200 and the second clamp head 300 approach each other, the first clamp head 200 and the second clamp head 300 are respectively inserted into the two ends of the inner cavity of the outer shoe cover, and the first clamping jaw 210 and the third clamping jaw 310 are arranged opposite to each other, and the second clamping jaw 220 and the fourth clamping jaw 320 are arranged opposite to each other, and under the driving action of the opening and closing drive, the two ends of the inner cavity are expanded, and the caliber of the two ends of the inner cavity is consistent, so that the worker can insert the inner core through the first placing opening 230 or the second placing opening 330, so that the inner core is placed in the inner cavity.

[0073] Referring to Figure 2 and Figure 3 As shown, it can be understood that the seat body 100 further comprises a first sleeve block 120, a second sleeve block 130, a third sleeve block 140 and a fourth sleeve block 150 sleeved on the guide column 110, the first sleeve block 120 is connected with the first clamping jaw 210, the second sleeve block 130 is connected with the second clamping jaw 220, the third sleeve block 140 is connected with the third clamping jaw 310, and the fourth sleeve block 150 is connected with the fourth clamping jaw 320, the first sleeve block 120 and the third sleeve block 140 are in sliding connection with the guide column 110, the third clamping jaw 310 and the fourth clamping jaw 320 are arranged along the axial direction of the guide column 110, and the first clamping jaw 210 and the second clamping jaw 220 are arranged along the axial direction of the guide column 110.

[0074] The two ends of the guide column 110 extend upward and downward, and through the sleeving of the third sleeve block 140 and the fourth sleeve block 150 on the guide column 110, the rotation of the third clamping jaw 310 and the fourth clamping jaw 320 is guided, and the second clamp head 300 can rotate around the axis extending upward and downward, so that the second clamp head 300 approaches or moves away from the first clamp head 200, when the first clamp head 200 and the second clamp head 300 are away from each other, the worker can place the outer shoe cover between the first clamp head 200 and the second clamp head 300, when the first clamp head 200 and the second clamp head 300 are in the folded state, the worker can insert the first clamp head 200 and the second clamp head 300 into the two ends of the inner cavity of the shoe back.

[0075] The first clamping jaw 210 and the second clamping jaw 220 are arranged along the axial direction of the guide column 110, the first clamping jaw 210 is located above the second clamping jaw 220, the third clamping jaw 310 and the fourth clamping jaw 320 are arranged along the axial direction of the guide column 110, the third clamping jaw 310 is located above the fourth clamping jaw 320, the first clamping jaw 210 and the third clamping jaw 310 are located on the same horizontal plane, and the second clamping jaw 220 and the fourth clamping jaw 320 are located on the same horizontal plane, the guide column 110 can guide the opening and closing of the first clamping jaw 210 and the second clamping jaw 220, and guide the opening and closing of the third clamping jaw 310 and the fourth clamping jaw 320.

[0076] And the first sleeve block 120 and the third sleeve block 140 are all in sliding connection with the guide column 110, the mutual abutment of the first sleeve block 120 and the guide column 110 can guide the opening and closing of the first clamping jaw 210 and the second clamping jaw 220, and the mutual abutment of the third sleeve block 140 and the guide column 110 can guide the opening and closing of the third clamping jaw 310 and the fourth clamping jaw 320.

[0077] The second clamping head 300 and the first clamping head 200 are respectively inserted into the left end and the right end of the inner cavity of the outer shoe cover, and after the opening and closing drive drives the first clamping jaw 210 to be away from the second clamping jaw 220 and the third clamping jaw 310 to be away from the fourth clamping jaw 320, a first placing opening 230 is formed between the first clamping jaw 210 and the second clamping jaw 220, and a second placing opening 330 is formed between the third clamping jaw 310 and the fourth clamping jaw 320, and the second placing opening 330 and the first placing opening 230 are arranged left and right.

[0078] The first sleeve block 120 can be fixedly connected with the guide column 110, that is, the first clamping head 200 does not need to rotate, and only through the rotation of the second clamping head 300, the operation of placing the first clamping head 200 and the second clamping head 300 into the inner cavity of the outer shoe cover can be realized. The fourth sleeve block 150 is in rotational connection with the guide column 110, so as to realize the forward rotation or reverse rotation of the second clamping head 300 and the guide column 110.

[0079] As another embodiment, the second clamping head 300 is in linear sliding connection with the seat body 100, and the second clamping head 300 can move linearly along the seat body 100, so that the second clamping head 300 can be close to or away from the first clamping head 200. When the first clamping head 200 and the second clamping head 300 are separated, it is convenient for workers to place the outer shoe cover between the first clamping head 200 and the second clamping head 300. When the first clamping head 200 and the second clamping head 300 are close to each other, the first clamping head 200 and the second clamping head 300 are respectively inserted into the two ends of the inner cavity of the outer shoe cover, and cooperate with the operation of the opening and closing drive, so that the first clamping jaw 210, the second clamping jaw 220, the third clamping jaw 310 and the fourth clamping jaw 320 jointly expand the outer shoe cover.

[0080] As another embodiment, the first clamping jaw 210 and the second clamping jaw 220 are arranged front and back, and the third clamping jaw 310 and the fourth clamping jaw 320 are arranged front and back, that is, the opening and closing drive can drive the first clamping jaw 210 to slide front and back relative to the second clamping jaw 220, and the third clamping jaw 310 to slide front and back relative to the fourth clamping jaw 320, so as to expand the outer shoe cover, so as to facilitate workers to place the inner core into the inner cavity of the outer shoe cover.

[0081] As another embodiment, the first clamping head 200 and the second clamping head 300 are arranged up and down, so that the first placing opening 230 and the second placing opening 330 are arranged up and down, and cooperate with the driving action of the opening and closing drive, so as to expand the outer shoe cover, so as to facilitate workers to place the inner core into the inner cavity of the outer shoe cover.

[0082] Referring to Figure 2 and Figure 3 It can be understood that, in the embodiment, the seat body 100 further comprises a supporting block 160 connected with the guide column 110 in a sliding manner, the first sleeve block 120 and the third sleeve block 140 are both located above the supporting block 160, and the opening and closing drive is in transmission connection with the supporting block 160, so as to drive the supporting block 160 to reciprocate along the guide column 110.

[0083] Under the action of gravity, the first sleeve block 120 or the third sleeve block 140 abuts against the supporting block 160, the opening and closing drive is in transmission connection with the supporting block 160, so as to drive the supporting block 160 to reciprocate along the guide column 110, when the opening and closing drive drives the supporting block 160 to hold up the first sleeve block 120 and the third sleeve block 140, the first clamping jaw 210 and the second clamping jaw 220 can be opened, and the third clamping jaw 310 and the fourth clamping jaw 320 can be opened, so as to open the inner cavity of the outer shoe cover. The worker can pass the inner core through the first placing opening 230 or the second placing opening 330, so as to place the inner core into the inner cavity, when the operation of placing the inner core into the inner cavity of the outer shoe cover is completed, the opening and closing drive can drive the supporting block 160 to slide downward, so as to drive the first sleeve block 120 and the third sleeve block 140 to slide downward along the guide column 110, so as to make the first clamping jaw 210 and the second clamping jaw 220 close, and the third clamping jaw 310 and the fourth clamping jaw 320 close, so as to eliminate the opening force applied to the outer shoe cover by the first clamping head 200 and the second clamping head 300, so that the worker can take out the combined outer shoe cover and inner core, so as to facilitate the worker to open the next outer shoe cover, so as to simplify the operation process and improve the production efficiency of the shoe back.

[0084] Referring to Figure 2 and Figure 3 It can be understood that, in the embodiment, the seat body 100 further comprises a supporting block 160 connected with the guide column 110 in a sliding manner, the first sleeve block 120 and the third sleeve block 140 are both located above the supporting block 160, and the opening and closing drive is in transmission connection with the supporting block 160, so as to drive the supporting block 160 to reciprocate along the guide column 110.

[0085] The guide column 110 is arranged in the accommodation space and connected with the lower horizontal plate, the cylinder body 610 has a fixed end, a movable end 611 and a rod body, the two ends of the rod body are connected with the fixed end and the movable end 611 respectively, the rod body passes through the upper horizontal plate and is arranged, the fixed end is connected with the upper end of the upper horizontal plate, and the movable end 611 is located in the accommodation space and arranged above the guide column 110.

[0086] Two ends of the connecting rod 620 are connected with the supporting block 160 and the movable end 611 of the cylinder body 610 respectively, the cylinder body 610 can drive the connecting rod 620 to extend or retract, so as to drive the supporting block 160 to slide up and down along the guide column 110, the cylinder body 610 can drive the connecting rod 620 to slide upward, so as to make the supporting block 160 support the first sleeve block 120 and the third sleeve block 140, and make the first clamping jaw 210 and the second clamping jaw 220 open, and the third clamping jaw 310 and the fourth clamping jaw 320 open, so as to open the inner cavity of the outer shoe cover. The worker can put the inner core through the first placing opening 230 or the second placing opening 330, so as to put the inner core into the inner cavity, when the operation of putting the inner core into the inner cavity of the outer shoe cover is completed, the cylinder body 610 can drive the connecting rod 620 to slide downward, so as to make the first sleeve block 120, the third sleeve block 140 and the supporting block 160 slide downward along the guide column 110, so as to make the first clamping jaw 210 and the second clamping jaw 220 close, and the third clamping jaw 310 and the fourth clamping jaw 320 close, so as to make the worker realize the opening of the next outer shoe cover, and make the first chuck 200 and the second chuck 300 more easily put into the inner cavity of the outer shoe cover, so as to simplify the operation process and improve the production efficiency of the shoe back.

[0087] Specifically, the cylinder body 610 can be a pneumatic cylinder, two connecting rods 620 are arranged at the left end and the right end of the supporting block 160 respectively, and the cylinder body 610 can drive the two connecting rods 620 to extend or retract synchronously, which is beneficial to make the sliding of the supporting block 160 along the guide column 110 more stable, and is beneficial to avoid the problem that the supporting block 160 is stuck with the guide column 110 due to the deflection of the supporting block 160 to the left or right.

[0088] Referring to Figure 3 It can be understood that the limit block 170 is arranged on the guide column 110, and the limit block 170 is located above the first sleeve block 120 and the third sleeve block 140, so as to limit the sliding stroke of the first sleeve block 120 and the third sleeve block 140, thereby controlling the length of the opening diameter of the inner cavity of the outer shoe cover, so as to make the opening diameter of the inner cavity of the outer shoe cover adapt to the shape and size of the inner core, so as to facilitate the worker to put the inner core into the inner cavity of the outer shoe cover, and is beneficial to simplify the operation process of putting the inner core into the inner cavity of the outer shoe cover, so as to reduce the operation time and improve the production efficiency.

[0089] The distraction device further comprises a tensile elastic member 400, the third sleeve block 140 is located above the first sleeve block 120, and two ends of the tensile elastic member 400 are connected with the third sleeve block 140 and the fourth sleeve block 150 respectively, so that the third sleeve block 140 and the fourth sleeve block 150 can be applied with a pulling force to move close to each other, and the first sleeve block 120 and the third sleeve block 140 are in sliding connection with the guide column 110, so that the first sleeve block 120 and the third sleeve block 140 have a tendency to slide downward, and under the action of the tensile elastic member 400, the first clamping jaw 210 and the second clamping jaw 220 have a tendency to close, and the third clamping jaw 310 and the fourth clamping jaw 320 have a tendency to close, and cooperating with the driving action of the opening and closing drive, the opening and closing of the first chuck 200 and the second chuck 300 can be realized, and the control is simpler and more reliable.

[0090] It should be noted that the tensile elastic member 400 is a spring, and under the elastic action of the spring, the first clamping jaw 210 and the second clamping jaw 220 have a tendency to close, and the third clamping jaw 310 and the fourth clamping jaw 320 have a tendency to close.

[0091] It can be understood that the distraction device further comprises a stop block, the second sleeve block 130 and the fourth sleeve block 150 are clamped between the two stop blocks, the stop block is sleeved on the guide column 110, and the second sleeve block 130 is located above the fourth sleeve block 150, and through the arrangement of the stop block, the sliding of the second sleeve block 130 and the fourth sleeve block 150 along the guide column 110 can be limited, so that the movable connection between the fourth sleeve block 150 and the guide column 110 is limited to a rotary connection.

[0092] Referring to Figure 1 and Figure 2 It can be understood that, in order to improve the stability of the opening and closing of the first clamping jaw 210 and the second clamping jaw 220, the distraction device further comprises a first guide rod 510, a first connecting block 520 and a second connecting block 530, the first clamping jaw 210 and the first sleeve block 120 are connected with the first connecting block 520, the second clamping jaw 220 and the second sleeve block 130 are connected with the second connecting block 530, and the first guide rod 510 is connected with one of the first connecting block 520 and the second connecting block 530 and passes through the other, and through the sliding connection of the first guide rod 510 with the first connecting block 520 or the second connecting block 530, the opening and closing of the first clamping jaw 210 relative to the second clamping jaw 220 can be guided, so that the inner cavity of the outer shoe cover is expanded to a predetermined shape, so as to facilitate the worker to place the inner core into the inner cavity of the outer shoe cover.

[0093] Referring to Figure 1 and Figure 2As shown, specifically, the first connecting block 520 comprises a first sub-block 521 and a first guide block 522, the first sub-block 521 extends along the radial direction of the guide column 110 and is connected with the first sleeve block 120, the first guide block 522 is connected with the lower end of the first sub-block 521, the first clamping jaw 210 is connected with the lower end of the first guide block 522, the first sub-block 521 can be connected with the first sleeve block 120 integrally through a welding process, and the first sub-block 521, the first guide block 522 and the first clamping jaw 210 can be connected integrally through a threaded fastener, so as to realize the detachable connection of the first clamping jaw 210 and the first guide block 522, so as to replace different first clamping jaws 210 for use according to different specifications or shapes of the shoe back.

[0094] Referring to Figure 1 and Figure 2 As shown, the second connecting block 530 comprises a second sub-block 531 and a second guide block 532, the second sub-block 531 extends along the radial direction of the guide column 110 and is connected with the second sleeve block 130, the second guide block 532 is connected with the upper end of the second sub-block 531, the second clamping jaw 220 is connected with the upper end of the second guide block 532, the second sub-block 531 can be connected with the second sleeve block 130 integrally through a welding process, and the second sub-block 531, the second guide block 532 and the second clamping jaw 220 can be connected integrally through a threaded fastener, so as to realize the detachable connection of the second clamping jaw 220 and the second guide block 532, so as to replace different second clamping jaws 220 for use according to different specifications or shapes of the shoe back.

[0095] The lower end of the first guide rod 510 is fixedly connected with the second guide block 532, and the upper end of the first guide rod 510 is arranged through the first perforation, and the first guide rod 510 and the first perforation are limited by each other, so as to guide the lifting of the first clamping jaw 210, and the stability of the opening and closing of the first clamping jaw 210 and the second clamping jaw 220 is improved.

[0096] As another embodiment, the upper end of the first guide rod 510 is fixedly connected with the first connecting block 520, and the lower end of the first guide rod 510 is arranged through the second connecting block 530, and the first guide rod 510 and the second connecting block 530 are connected in a sliding manner, so as to guide the lifting of the first clamping jaw 210, and the stability of the opening and closing of the first clamping jaw 210 and the second clamping jaw 220 is improved.

[0097] Referring to Figure 1 and Figure 2As shown, it can be understood that, in order to improve the stability of the opening and closing of the third clamping jaw 310 and the fourth clamping jaw 320, the opening device further comprises a second guide rod 560, a third connecting block 540 and a fourth connecting block 550, the third clamping jaw 310 and the third sleeve block 140 are connected with the third connecting block 540, the fourth clamping jaw 320 and the fourth sleeve block 150 are connected with the fourth connecting block 550, and the second guide rod 560 is connected with one of the third connecting block 540 and the fourth connecting block 550 and passes through the other, and the third clamping jaw 310 and the fourth clamping jaw 320 are connected through the sliding connection of the second guide rod 560 and the third connecting block 540 or the fourth connecting block 550, so as to guide the opening and closing of the third clamping jaw 310 relative to the fourth clamping jaw 320, so that the inner cavity of the outer shoe cover is opened to a preset shape, so as to facilitate the worker to place the inner core into the inner cavity of the outer shoe cover.

[0098] Referring to Figure 1 and Figure 2 Specifically, the third connecting block 540 comprises a third sub-block 541, a lower extension block 542 and a third guide block 543, the third sub-block 541 extends along the radial direction of the guide column 110 and is connected with the third sleeve block 140, the extension direction of the lower extension block 542 is consistent with the extension direction of the guide column 110, and the upper end of the lower extension block 542 is connected with the third sub-block 541, and the lower end of the lower extension block 542 is connected with the end of the third clamping jaw 310 away from the second hook portion 340, and the setting of the lower extension block 542 can be used to adjust the setting height of the third clamping jaw 310, so that the third clamping jaw 310 and the first clamping jaw 210 are located at the same horizontal plane, and the second hook portion 340 of the third clamping jaw 310 and the first hook portion 240 of the first clamping jaw 210 can be connected or separated.

[0099] The third guide block 543 extends along the radial direction of the guide column 110 and is connected with the third sleeve block 140, and the third guide block 543 and the third sub-block 541 are arranged at the two ends of the third sleeve block 140 away from each other, and the third guide block 543 is provided with a second through hole.

[0100] Referring to Figure 1 and Figure 2 Specifically, the fourth connecting block 550 comprises a fourth sub-block 551, an upper extension block 552 and a fourth guide block 553, the fourth sub-block 551 extends along the radial direction of the guide column 110 and is connected with the fourth sleeve block 150, the extension direction of the upper extension block 552 is consistent with the extension direction of the guide column 110, and the lower end of the upper extension block 552 is connected with the fourth sub-block 551, and the upper end of the upper extension block 552 is connected with the end of the fourth clamping jaw 320 away from the second hook portion 340, and the setting of the upper extension block 552 can be used to adjust the setting height of the fourth clamping jaw 320, so that the fourth clamping jaw 320 and the second clamping jaw 220 are located at the same horizontal plane, and the second hook portion 340 of the fourth clamping jaw 320 and the first hook portion 240 of the second clamping jaw 220 can be connected or separated.

[0101] The fourth guide block 553 extends along the radial direction of the guide column 110 and is connected with the fourth sleeve block 150, and the fourth guide block 553 and the fourth sub-block 551 are arranged at two ends of the fourth sleeve block 150 which are arranged oppositely. The lower end of the second guide rod 560 is fixedly connected with the fourth guide block 553, and the upper end of the second guide rod 560 is arranged through the second through hole. The mutual limiting of the second guide rod 560 and the second through hole can guide the lifting of the third clamping jaw 310, and is favorable for improving the stability of the opening and closing of the third clamping jaw 310 and the fourth clamping jaw 320. And under the connecting action of the second guide rod 560, the rotation synchronization rate of the third clamping jaw 310 and the fourth clamping jaw 320 is higher.

[0102] It can be understood that the opening device further comprises a rotary drive 700, which is in transmission connection with the second chuck 300 to drive the second chuck 300 to move close to or away from the first chuck 200, that is, the opening device can automatically drive the second chuck 300 to move close to or away from the first chuck 200, which is favorable for improving the automation degree of the opening device, facilitating the operation of opening the outer shoe cover, and simplifying the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby reducing the operation time and improving the production efficiency.

[0103] Specifically, the rotary drive 700 is a pneumatic cylinder, one end of the pneumatic cylinder is connected with the seat body 100, the other end of the pneumatic cylinder is rotationally connected with a rotating block, the rotating block is rotationally connected with the fourth guide block 553, and the pneumatic cylinder can drive the fourth guide block 553 to rotate forward or reverse around the guide column 110 through the extension and contraction of the pneumatic cylinder. Through the connection of the fourth guide block 553 and the fourth sleeve block 150, and the series connection of the third guide block 543 and the fourth guide block 553 by the second guide rod 560, the third clamping jaw 310 and the fourth clamping jaw 320 are driven to rotate synchronously.

[0104] Two connecting rods 620 are arranged, one of which is arranged between the first guide block 522 and the third guide block 543. Through the abutment of the third guide block 543 and the connecting rod 620, and in cooperation with the extension stroke of the pneumatic cylinder, the rotation angle of the second clamping jaw 220 relative to the first clamping jaw 210 can be controlled. After the second chuck 300 rotates away from the first chuck 200, the space formed between the first chuck 200 and the second chuck 300 can be used for workers to sleeve the outer shoe cover at the first chuck 200. After the second chuck 300 rotates close to the first chuck 200, the first chuck 200 and the second chuck 300 can be butt-jointed to ensure that the first chuck 200 and the second chuck 300 are inserted into the two ends of the inner cavity of the outer shoe cover.

[0105] Referring to Figure 6 The production process of the present application applies the opening device shown in the above embodiment, and the production process comprises the following steps:

[0106] Step S100, providing an outer shoe cover and an inner core in standby, the outer shoe cover having an inner cavity provided through;

[0107] Step S200, the second clamp head 300 is away from the first clamp head 200, and the outer shoe cover is sleeved on the first clamp head 200;

[0108] Step S300, the second clamp head 300 is close to the first clamp head 200, so that the first clamp head 200 and the second clamp head 300 are respectively inserted into two ends of the inner cavity;

[0109] Step S400, the opening and closing drive drives the first clamp jaw 210 and the second clamp jaw 220 to open the inner cavity, and the third clamp jaw 310 and the fourth clamp jaw 320 open the inner cavity;

[0110] Step S500, the inner core is placed into the inner cavity from the first placing entrance 230 or the second placing entrance 330.

[0111] In use, the worker can drive the first clamp head 200 and the second clamp head 300 to be away from each other, so that the first clamp head 200 and the second clamp head 300 are arranged in a spaced manner, and the outer shoe cover is sleeved on the first clamp head 200, that is, the first clamp jaw 210 and the second clamp jaw 220 are inserted into one end of the inner cavity of the outer shoe cover, and then by controlling the second clamp head 300 to be close to the first clamp head 200, the second clamp head 300 is inserted into the other end of the inner cavity of the outer shoe cover, that is, the third clamp jaw 310 and the fourth clamp jaw 320 are inserted into the inner cavity of the outer shoe cover, and the opening and closing drive can drive the first clamp jaw 210 and the second clamp jaw 220 to open, and the third clamp jaw 310 and the fourth clamp jaw 320 to open, that is, the first clamp jaw 210, the second clamp jaw 220, the third clamp jaw 310 and the fourth clamp jaw 320 jointly open the inner cavity of the outer shoe cover, so as to maintain the opening state of the outer shoe cover, and the first placing entrance 230 is formed between the first clamp jaw 210 and the second clamp jaw 220, and the second placing entrance 330 is formed between the third clamp jaw 310 and the fourth clamp jaw 320, and the worker can pass the inner core through the first placing entrance 230 or the second placing entrance 330, so that the inner core can be smoothly inserted into the inner cavity of the outer shoe cover, and the position of the inner core in the inner cavity can be conveniently adjusted, so that the inner cavity is matched with the outer shoe cover, that is, the production process can assist the worker to realize the operation of inserting the inner core into the inner cavity of the outer shoe cover, without the worker keeping the opening state of the outer shoe cover at all times, which is beneficial to simplify the operation process of placing the inner core into the inner cavity of the outer shoe cover, thereby improving the production efficiency of the shoe back.

[0112] In step S100, the outer shoe cover can be formed by folding the cloth piece along the folding line, so that the outer shoe cover has an inner cavity provided through. Alternatively, the outer shoe cover can be formed by knitting process to form an inner cavity provided through, which can accommodate the inner core.

[0113] In step S300 and step S400, after the second clamp head 300 is close to the first clamp head 200, the second clamp head 300 is butted with the first clamp head 200, then the worker can pull the shoe cover by way of making the shoe cover cross the first clamp head 200 and the second clamp head 300, that is, the first clamp head 200 and the second clamp head 300 are respectively inserted into two ends of the inner cavity, under the driving action of the opening and closing drive, so that the first clamp head 200 and the second clamp head 300 jointly exert the opening force on the outer shoe cover, so as to put the inner core into the inner cavity of the outer shoe cover.

[0114] In step S500, the worker can exert pressure on the inner core from one end of the first insertion port 230 and the second insertion port 330 to the inner core, so that the inner core gradually penetrates into the inner cavity of the outer shoe cover, the worker can put the hand from the other end of the first insertion port 230 and the second insertion port 330 into the inner cavity of the outer shoe cover, and exert pulling force on the inner core, so that the inner core overcomes the friction between the outer shoe cover, to realize the operation of putting the inner core into the inner cavity of the outer shoe cover.

[0115] When the operation of putting the inner core into the outer shoe cover is completed, the worker drives the first clamp jaw 210 to close to the second clamp jaw 220 and the third clamp jaw 310 to close to the fourth clamp jaw 320 by the opening and closing drive, to eliminate the opening force on the outer shoe cover, and reversely rotates the second clamp head 300 to make the second clamp head 300 exit the inner cavity of the outer shoe cover, then takes down the outer shoe cover and the inner core combination from the first clamp head 200, that is, the separation of the outer shoe cover and the inner core combination from the opening device is realized.

[0116] The above embodiment of the present application is described in detail in combination with the drawings, but the present application is not limited to the above embodiment, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the present application.

Claims

1. A spreading device, characterized in that, include: base(100); A first chuck (200) is connected to the base (100), and the first chuck (200) includes a first jaw (210) and a second jaw (220); The second chuck (300) is movably connected to the base (100). The second chuck (300) can move closer to or further away from the first chuck (200). The second chuck (300) includes a third jaw (310) and a fourth jaw (320). The third jaw (310) is disposed opposite to the first jaw (210), and the fourth jaw (320) is disposed opposite to the second jaw (220). The opening and closing drive is connected to the first chuck (200) to drive the first jaw (210) and the second jaw (220) to open and form a first insertion port (230). The opening and closing drive is connected to the second chuck (300) to drive the third jaw (310) and the fourth jaw (320) to open and form a second insertion port (330). The first jaw (210) and the second jaw (220) are each provided with a first hook portion (240) that bends toward the second chuck (300), and the third jaw (310) and the fourth jaw (320) are each provided with a second hook portion (340) that bends toward the first chuck (200); The first hook portion (240) and the second hook portion (340) are connected to form an arch. After the first clamp (200) and the second clamp (300) are inserted into the inner cavity of the outer shoe cover, the outer shoe cover is stretched open and tightened under the driving action of the opening and closing drive. The outer shoe cover is formed into a shape that matches the first hook portion (240) and the second hook portion (340), so that the stretched outer shoe cover and the inner cavity are arranged in an arch shape.

2. The spreading device according to claim 1, characterized in that: The first gripper (210), the second gripper (220), the third gripper (310), and the fourth gripper (320) are all plate-shaped; and / or, The width of the first gripper (210) is greater than the width of the second gripper (220), and the width of the third gripper (310) is greater than the width of the fourth gripper (320).

3. The spreading device according to claim 1, characterized in that: The seat (100) includes a guide post (110), the third jaw (310) and the fourth jaw (320) are rotatably connected to the guide post (110), and the second chuck (300) can rotate relative to the first chuck (200) to move closer to or further away from it.

4. The spreading device according to claim 3, characterized in that: The seat (100) further includes a first sleeve block (120), a third sleeve block (140), and a fourth sleeve block (150) sleeved on the guide post (110). The first sleeve block (120) is connected to the first gripper (210), the third sleeve block (140) is connected to the third gripper (310), and the fourth sleeve block (150) is connected to the fourth gripper (320). The first sleeve block (120) and the third sleeve block (140) are both slidably connected to the guide post (110). The third gripper (310) and the fourth gripper (320) are arranged along the axial direction of the guide post (110), and the first gripper (210) and the second gripper (220) are arranged along the axial direction of the guide post (110).

5. The spreading device according to claim 4, characterized in that: The seat (100) also includes a support block (160) slidably connected to the guide post (110). The first sleeve block (120) and the third sleeve block (140) are both located above the support block (160). The opening and closing drive is connected to the support block (160) to drive the support block (160) to slide back and forth along the guide post (110).

6. The spreading device according to claim 5, characterized in that: The opening and closing drive includes a cylinder (610) and a connecting rod (620), with both ends of the connecting rod (620) connected to the support block (160) and the cylinder (610) respectively.

7. The spreading device according to claim 5, characterized in that: The guide post (110) is also provided with a limiting block (170), which is located above the first sleeve block (120) and the third sleeve block (140) to limit the sliding stroke of the first sleeve block (120) and the third sleeve block (140).

8. The spreading device according to claim 5, characterized in that: It also includes a tension elastic element (400), the third sleeve (140) is located above the first sleeve (120), and the two ends of the tension elastic element (400) are connected to the third sleeve (140) and the fourth sleeve (150) respectively.

9. The spreading device according to claim 4, characterized in that: It also includes a first guide rod (510), a first connecting block (520), a second connecting block (530), and a second sleeve block (130) sleeved on the guide post (110). The first connecting block (520) is connected to the first sleeve block (120) and to the first gripper (210). The second connecting block (530) is connected to the second sleeve block (130) and to the second gripper (220). The first guide rod (510) is connected to one of the first connecting block (520) and the second connecting block (530) and passes through the other.

10. The spreading device according to claim 4, characterized in that: It also includes a second guide rod (560), a third connecting block (540) and a fourth connecting block (550), the third connecting block (540) being connected to the third sleeve block (140) and to the third gripper (310), the fourth connecting block (550) being connected to the fourth sleeve block (150) and to the fourth gripper (320), the second guide rod (560) being connected to one of the third connecting block (540) and the fourth connecting block (550) and passing through the other.

11. The spreading device according to claim 3, characterized in that: It also includes a rotary drive (700) that is connected to the second chuck (300) to drive the second chuck (300) to move closer to or away from the first chuck (200).

12. The production process, characterized by: The manufacturing process, using the spreading device as described in any one of claims 1 to 11, comprises: Provide an outer shoe cover and an inner core for use, wherein the outer shoe cover has a through-hole; The second clamp (300) is positioned away from the first clamp (200) and attaches the outer shoe cover to the first clamp (200); The second clamp (300) is close to the first clamp (200) so that the first clamp (200) and the second clamp (300) are respectively inserted into the two ends of the inner cavity; The opening and closing drive causes the first gripper (210) and the second gripper (220) to open the inner cavity, and the third gripper (310) and the fourth gripper (320) to open the inner cavity; The inner core is inserted into the inner cavity through the first insertion port (230) or the second insertion port (330).

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