Expansion equipment for thermal shrinkage part

Abstract

The invention discloses expansion equipment for a thermal shrinkage part. The expansion equipment comprises a rack body, a rotating mechanism, a heating mechanism, a cooling mechanism and an expansion mechanism, by arranging the rotating mechanism, the heating mechanism, the cooling mechanism and the expansion mechanism, the automatic heating, cooling and expansion process of the thermal shrinkage part is achieved. The heating piece is arranged below the heating station of the lower die assembly, the cooling piece is arranged below the cooling station of the lower die assembly, the expansion mechanism is arranged above the lower die assembly relative to the cooling mechanism, and the multiple stations are integrated in one rotating mechanism, so that the occupied area of equipment can be remarkably reduced, and the space utilization rate is increased.

Description

Technical Field

[0001] The invention relates to the technical field of heat shrinkable parts processing, and in particular to a heat shrinkable parts expansion device. Background Art

[0002] The production process of heat shrinkable molded sleeves includes four main process steps: extrusion, injection molding, irradiation and expansion. In the current expansion process, the irradiated molded sleeve is often manually placed in an oven to heat until softened, then taken out for mechanical expansion, and after expansion, the cone mold is placed in water for cooling, and then manually demolded. The whole process is cumbersome, inefficient, and easy to cause burns. Summary of the invention

[0003] The main purpose of the present invention is to provide a heat shrinkable part expansion device, which aims to realize the automatic heating, cooling and expansion process of the heat shrinkable part, reduce the floor space of the device and improve the space utilization rate.

[0004] The above object of the present invention is achieved through the following technical solutions:

[0005] A heat shrinkable part expansion device, comprising:

[0006] Frame body;

[0007] A rotating mechanism is arranged on the frame body, comprising a lower die assembly, wherein the lower die assembly comprises a lower die with a through hole and an elastic sleeve arranged on the lower die, the elastic sleeve is sleeved with the heat shrinkable part outside, and the lower die assembly rotates through a loading station, a heating station, a cooling station and a unloading station;

[0008] A heating mechanism is provided on the frame body, comprising a heating element for heating the heat shrinkable element, the heating element is located below the heating station of the lower mold assembly, and comprises a heating position close to the lower mold assembly and a restoring position away from the lower mold assembly;

[0009] A cooling mechanism is provided on the frame body, comprising a cooling member for cooling the heat shrinkable member, the cooling member is located below the cooling station of the lower mold assembly, and comprises a cooling position close to the lower mold assembly and a return position away from the lower mold assembly;

[0010] The expansion mechanism is arranged on the frame body, located above the lower mold assembly and arranged relative to the cooling mechanism, including an upper mold assembly, the upper mold assembly including an expansion rod, and the upper mold assembly has an expansion state and a blanking state. When the lower mold assembly is in the cooling station, the upper mold assembly moves downward relative to the lower mold assembly so that the expansion rod passes through the through hole into the elastic sleeve to expand the heat shrinkable part, and the upper mold assembly is in the expansion state; the upper mold assembly moves upward relative to the lower mold assembly so that the expansion rod is separated from the heat shrinkable part, and the upper mold assembly is in the blanking state.

[0011] Optionally, the expansion mechanism also includes an expansion drive member, an expansion base plate fixedly connected to the frame body, and an expansion movable plate slidably connected to the expansion base plate, the upper mold assembly is arranged on a side of the expansion movable plate close to the expansion base plate, the expansion base plate has a through hole corresponding to the upper mold assembly, and the driving part of the expansion drive member drives the expansion movable plate to make the upper mold assembly reciprocate between the expansion state and the unloading state.

[0012] Optionally, the expansion movable plate is provided with a sleeve hole, the upper mold assembly is fixedly mounted in the sleeve hole, the upper mold assembly also includes an upper mold outer sleeve fixedly mounted in the sleeve hole and an upper mold inner sleeve fixedly mounted in the upper mold outer sleeve, and the expansion rod is connected to one side of the upper mold inner sleeve close to the expansion bottom plate.

[0013] Optionally, the rotating mechanism also includes a rotating drive member, a column and a plurality of rotating shafts fixed to the column, the number of the rotating shafts corresponds to the number of workstations, the plurality of rotating shafts are evenly distributed around the column, the plurality of lower mold assemblies are respectively fixed to the plurality of rotating shafts, one end of the column is connected to the driving part of the rotating drive member, the other end of the column is rotatably connected to the frame body, and the rotating drive member drives the column to intermittently move, so that the plurality of lower mold assemblies pass through the loading station, the heating station, the cooling station and the unloading station in an orderly and intermittent manner.

[0014] Optionally, the heating mechanism includes a first lifting seat body fixedly connected to the frame body, a first lifting bracket slidably connected to the first lifting seat body, and a first driving member, the first lifting bracket is provided with the heating element, and the driving part of the first driving member drives the first lifting bracket to make the heating element reciprocate between the heating position and the restoration position.

[0015] Optionally, the heating element is a heating cylinder, which includes a cylinder, a heating rod extending into the inner cavity of the cylinder and a conical sleeve located at the opening of the cylinder. The cylinder is provided with a feed port and a discharge port connected to the inner cavity of the cylinder. The feed port is located near the bottom of the cylinder, and the discharge port is located near the opening of the cylinder.

[0016] Optionally, the cooling mechanism includes a second lifting seat body fixedly connected to the frame body, a second lifting bracket slidably connected to the second lifting seat body, and a second driving member, the second lifting bracket is provided with the cooling member, and the driving part of the second driving member drives the second lifting bracket to make the cooling member reciprocate between the cooling position and the return position.

[0017] Optionally, the heat shrinkable part expansion device also includes a positioning mechanism, which is located between the expansion mechanism and the cooling position of the cooling mechanism. The positioning mechanism includes a positioning seat arranged on the frame body, a positioning cylinder arranged on the positioning seat and a positioning block connected to the output end of the positioning cylinder. The lower mold of the lower mold assembly is provided with a positioning groove corresponding to the positioning block.

[0018] Optionally, the heat shrinkable part expansion device also includes a supporting mechanism arranged adjacent to the rotating mechanism, the supporting mechanism including a supporting seat arranged on the frame body, a supporting cylinder arranged on the supporting seat and a supporting rod connected to the output end of the supporting cylinder, the supporting rod supports the lower mold.

[0019] Optionally, the heat shrinkable component expansion device further comprises an exhaust mechanism provided on the frame body, and the exhaust mechanism is provided adjacent to the heating mechanism;

[0020] Alternatively, the elastic body is a wire sleeve, and the expansion rod is provided with an avoidance groove corresponding to the axial direction of the wire sleeve.

[0021] The heat shrinkable parts expansion device of the present invention comprises a frame body, a rotating mechanism, a heating mechanism, a cooling mechanism and an expansion mechanism. By setting the rotating mechanism, the lower mold assembly drives the heat shrinkable parts to rotate between different stations. First, the lower mold assembly rotates to the loading station to load the materials, and the heat shrinkable parts are manually sleeved on the outside of the elastic sleeve to complete the loading; then, the lower mold assembly rotates from the loading station to the heating station, and the heating part moves from the return position to the heating position to heat the heat shrinkable parts; secondly, the lower mold assembly rotates from the heating station to the cooling station, the upper mold assembly moves downward relative to the lower mold assembly, the expansion rod expands the heat shrinkable parts, the cooling part moves from the return position to the cooling position, and the expanded heat shrinkable parts are cooled. After the heat shrinkable parts are cooled, the upper mold assembly moves upward relative to the lower mold assembly to separate the expansion rod from the cooled heat shrinkable parts; finally, the lower mold assembly rotates from the cooling station to the unloading station to unload the materials, and the expanded heat shrinkable parts are manually removed. By setting the rotating mechanism, the heating mechanism, the cooling mechanism and the expansion mechanism, the automatic heating, cooling and expansion process of the heat shrinkable parts is realized. A heating element is arranged below the heating station of the lower mold assembly, a cooling element is arranged below the cooling station, and an expansion mechanism is arranged above the lower mold assembly relative to the cooling mechanism. By integrating multiple stations into one rotating mechanism, the equipment footprint can be significantly reduced and space utilization can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of a three-dimensional structure of an embodiment of a heat shrinkable component expansion device of the present invention from a viewing angle;

[0024] Figure 2 It is a rear view from a first perspective of an embodiment of a heat shrinkable expansion device of the present invention;

[0025] Figure 3 It is a schematic diagram of a three-dimensional structure from a first perspective of an embodiment of a heat shrinkable component expansion device of the present invention;

[0026] Figure 4 It is a schematic diagram of a three-dimensional structure from a first perspective of an embodiment of a heat shrinkable component expansion device of the present invention;

[0027] Figure 5 A top view from a first perspective of an embodiment of a heat shrinkable expansion device of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the rotating mechanism of an embodiment of the heat shrinkable component expansion device of the present invention;

[0029] Figure 7 This is a schematic diagram of the heating mechanism structure of an embodiment of a heat shrinkable component expansion device of the present invention;

[0030] Figure 8 This is a schematic diagram of the cooling mechanism structure of an embodiment of a heat shrinkable component expansion device of the present invention;

[0031] Fig. 9 This is a schematic diagram of the expansion mechanism structure of an embodiment of a heat shrinkable component expansion device of the present invention;

[0032] Fig.10 This is a schematic diagram of the positioning mechanism structure of an embodiment of a heat shrinkable component expansion device of the present invention;

[0033] Fig.11 It is a schematic diagram of the supporting mechanism structure of an embodiment of the heat shrinkable component expansion device of the present invention.

[0034] Description of Figure Numbers:

[0035]

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] The production process of heat shrinkable molded sleeves includes four main process steps: extrusion, injection molding, irradiation, and expansion. In the current expansion process, the irradiated molded sleeve is often manually placed in an oven to heat until softened, then taken out for mechanical expansion. After expansion, the cone mold is placed in water for cooling, and then demolded manually. The whole process is cumbersome, inefficient, and easy to cause burns. In view of this situation, a heat shrinkable part expansion device 100 is provided, which can realize automatic expansion of heat shrinkable parts, reduce the equipment footprint, and improve space utilization.

[0042] Please refer to Figure 1-11The heat shrinkable component expansion device 100 provided by the present invention comprises a frame body 10, a rotating mechanism 20, a heating mechanism 30, a cooling mechanism 40 and an expansion mechanism 50. The rotating mechanism 20 is arranged on the frame body 10, and comprises a lower mold assembly 21. The lower mold assembly 21 comprises a lower mold 211 with a through hole 211A and an elastic sleeve 212 arranged on the lower mold 211. The elastic sleeve 212 is sleeved with the heat shrinkable component on the outside. The lower mold assembly 21 rotates through a loading station 201, a heating station 202, a cooling station 203 and a unloading station 204. The heating mechanism 30 is arranged on the frame body 10, and comprises a heating element 34 for heating the heat shrinkable component. The heating element 34 is located below the heating station 202 of the lower mold assembly 21, and comprises a heating position 301 close to the lower mold assembly 21 and a recovery position 302 away from the lower mold assembly 21. The cooling mechanism 40 is arranged on the frame body 10, including a cooling member 44 for cooling the heat shrinkable member. The cooling member 44 is located below the cooling station 203 of the lower mold assembly 21, including a cooling position 401 close to the lower mold assembly 21 and a return position 402 away from the lower mold assembly 21. The expansion mechanism 50 is arranged on the frame body 10, located above the lower mold assembly 21 and relative to the cooling mechanism 40, including an upper mold assembly 51, and the upper mold assembly 51 includes an expansion rod 511. The upper mold assembly 51 has an expansion state and a blanking state. When the lower mold assembly 21 is in the cooling station 203, the upper mold assembly 51 moves downward relative to the lower mold assembly 21 so that the expansion rod 511 passes through the through hole 211A into the elastic sleeve 212 to expand the heat shrinkable component, and the upper mold assembly 51 is in the expansion state; the upper mold assembly 51 moves upward relative to the lower mold assembly 21 so that the expansion rod 511 is separated from the heat shrinkable component, and the upper mold assembly 51 is in the blanking state.

[0043] It can be understood that the frame body 10 is the basic structure of the entire heat shrinkable expansion device 100, and is used to support the rotating mechanism 20, the heating mechanism 30, the cooling mechanism 40 and the expansion mechanism 50. The frame body 10 can be a frame, a mounting frame, a support frame, a frame body, a mounting surface or a mounting plate, etc., which is not limited here.

[0044] It can be understood that the heat shrinkable part can be a common heat shrinkable tube or a special-shaped molded sleeve. The molded sleeve can be of various shapes, such as a straight molded sleeve, a Y-shaped molded sleeve, a three-finger molded sleeve, etc., or a curved molded sleeve, as long as the shape of the expansion rod 511 matches the shape of the molded sleeve. Of course, the heat shrinkable part can also be a heat shrinkable tube of other shapes with openings at both ends, as long as the heat shrinkable part can be sleeved on the outside of the elastic sleeve 212. The elastic sleeve 212 is made of a plurality of thin and long filaments with a certain elastic deformation, such as metal wires and polymer wires. One end of the thin and long filaments is arranged on the lower mold 211 and is arranged around the through hole 211A, and the other end is gathered to form a gathered end. Taking the three-finger molded sleeve as an example, the lower mold 211 is provided with three through holes, and the three through holes are arranged in the order of the positions of the three-finger sleeves. The elastic sleeve 212 has three groups of elastically deformable slender filaments, each group of slender filaments is about 12-20, and one end of each group of slender filaments is arranged around the through hole 211A of the lower mold 211, and the gathered end is gathered and gathered with objects such as ropes. In this way, the elastic sleeve 212 is three groups of conical slender filaments. When in use, the three fingers of the three-finger molded sleeve are respectively inserted into the slender filaments from the three gathered ends. For heat shrink parts of other shapes, the elastic sleeve 212 can match the shape of the heat shrink part, and no limitation is made here. Furthermore, if the elastic sleeve 212 is a steel wire sleeve or a polymer wire sleeve, in order to make the expanded heat shrink part more beautiful, the expansion rod 511 is provided with an avoidance groove 511A corresponding to the axial direction of the elastic sleeve 212.

[0045] It is understandable that the lower mold assembly 21 is driven by an external drive mechanism and intermittently driven by a PLC or other control system to ensure that the lower mold assembly 21 is driven in a predetermined order and time interval, so that the lower mold assembly 21 passes through each station, such as the loading station 201, the heating station 202, the cooling station 203 and the unloading station 204 in sequence, or the loading station, the first heating station, the second heating station, the cooling station and the unloading station. Passing through two heating stations can make the heat shrinkable parts more efficient in heating and softening, which is conducive to the next expansion process. The order and number of stations that the lower mold assembly 21 passes through can be determined according to actual conditions and are not limited here.

[0046] It is understandable that the heating element 34 can be a heating structure such as resistance wire heating, infrared heating, steam heating, heating oil heating, etc., which is not limited here. The heating element 34 is located below the heating station 202 of the lower mold assembly 21, including two positions, one is the heating position 301 close to the lower mold assembly 21, which is used to heat the heat shrinkable part; the other is the return position 302 away from the lower mold assembly 21, which is used to return to the initial position after heating. The heating element 34 reciprocates between the heating position 301 and the return position 302 through the lifting structure. The lifting structure can be a connecting rod structure, a gear structure or a cam structure, etc., as long as it can achieve accurate motion trajectory and position control, which is not limited here. The cooling member 44 can be a cooling structure such as air cooling, coolant cooling, etc., which is not limited here. The cooling member 44 is located below the cooling station 203 of the lower mold assembly 21, and includes two positions, one is the cooling position 401 close to the lower mold assembly 21, which is used to cool the heat shrinkable parts after heating; the other is the return position 402 away from the lower mold assembly 21, which is used to return to the initial position after cooling is completed. The cooling member 44 reciprocates between the cooling position 401 and the return position 402 through the lifting structure. The lifting structure can be a connecting rod structure, a gear structure or a cam structure, etc., as long as it can achieve accurate motion trajectory and position control, which is not limited here. The lifting structures of the heating member 34 and the cooling member 44 can be the same or different, and can be determined according to actual conditions, which is not limited here.

[0047] It can be understood that the expansion mechanism 50 is located above the lower mold assembly 21 and is arranged relative to the cooling mechanism 40. The upper mold assembly 51 includes an expansion rod 511. The structure of the expansion rod 511 matches the structure of the heat shrinkable part. The heat shrinkable part is a straight mold shrink sleeve or an ordinary heat shrink tube. The expansion rod 511 corresponds to a tapered rod. The heat shrinkable part is a three-finger mold shrink sleeve. The expansion rod 511 corresponds to three tapered rods. The structure of the expansion rod 511 matches the structure of the heat shrinkable part, which is not limited here. The upper mold assembly 51 has an expansion state and a blanking state. When the lower mold assembly 21 is in the cooling station 203, the upper mold assembly 51 moves downward relative to the lower mold assembly 21 so that the expansion rod 511 penetrates the elastic sleeve 212 through the through hole 211A to expand the heat shrinkable part, and the upper mold assembly 51 is in the expansion state; the upper mold assembly 51 moves upward relative to the lower mold assembly 21 so that the expansion rod 511 is separated from the heat shrinkable part, and the upper mold assembly 51 is in the blanking state. The upper mold assembly 51 reciprocates between the expanded state and the unloading state through a lifting structure. The lifting structure can be a connecting rod structure, a gear structure or a cam structure, etc., as long as it can achieve precise motion trajectory and position control, and is not limited here.

[0048] The heat shrinkable component expansion device 100 of the present invention comprises a frame 10, a rotating mechanism 20, a heating mechanism 30, a cooling mechanism 40 and an expansion mechanism 50. By setting the rotating mechanism 20, the lower mold assembly 21 drives the heat shrinkable component to rotate between different stations. First, the lower mold assembly 21 rotates to the loading station 201 to load the material, and the heat shrinkable component is manually sleeved on the outside of the elastic sleeve 212 to complete the loading; then, the lower mold assembly 21 rotates from the loading station 201 to the heating station 202, and the heating element 34 moves from the resting position 302 to the heating position 301 to heat the heat shrinkable component; secondly, the lower mold assembly 21 rotates from the heating station 202 to the heating station 301 to heat the heat shrinkable component; At the cooling station 203, the upper mold assembly 51 moves downward relative to the lower mold assembly 21, the expansion rod 511 expands the heat shrinkable part, and the cooling part 44 moves from the return position 402 to the cooling position 401 to cool the expanded heat shrinkable part. After the heat shrinkable part is cooled, the upper mold assembly 51 moves upward relative to the lower mold assembly 21 to make the expansion rod 511 separate from the cooled heat shrinkable part; finally, the lower mold assembly 21 rotates from the cooling station 203 to the unloading station 204 to unload the material, and the expanded heat shrinkable part is manually removed. By setting the rotating mechanism 20, the heating mechanism 30, the cooling mechanism 40 and the expansion mechanism 50, the automatic heating, cooling and expansion process of the heat shrinkable part is realized. The heating member 34 is set below the heating station 202 of the lower mold assembly 21, the cooling member 44 is set below the cooling station, and the expansion mechanism 50 is set above the lower mold assembly 21 relative to the cooling mechanism 40. By integrating multiple stations in one rotating mechanism 20, the equipment footprint can be significantly reduced and the space utilization rate can be improved.

[0049] In one embodiment, please refer to Fig. 9 The expansion mechanism 50 also includes an expansion drive member 52, an expansion base plate 54 fixedly connected to the frame body 10, and an expansion movable plate 53 slidably connected to the expansion base plate 54. The upper mold assembly 51 is arranged on a side of the expansion movable plate 53 close to the expansion base plate 54. The expansion base plate 54 has a through hole 54A corresponding to the upper mold assembly 51. The driving part of the expansion drive member 52 drives the expansion movable plate 53 to make the upper mold assembly 51 reciprocate between the expansion state and the unloading state.

[0050] It can be understood that the expansion mechanism 50 includes an expansion base plate 54, an expansion movable plate 53 and an expansion drive member 52. The expansion base plate 54 is fixedly connected to the frame body 10, and a plurality of guide shafts are arranged between the expansion movable plate 53 and the expansion base plate 54. The expansion movable plate 53 is provided with a plurality of sleeves corresponding to the plurality of guide shafts. The arrangement of the sleeves and the guide shafts can further ensure the stability of the expansion movable plate 53 and the expansion base plate 54 during the sliding connection operation, avoid jamming, and reduce the influence of eccentric load. The expansion drive member 52 can be a drive member such as an electric cylinder or a pneumatic cylinder. In order to save space, the expansion drive member 52 can be arranged on the side of the expansion base plate 54 away from the expansion movable plate 53. The driving part of the expansion drive member 52 passes through the expansion base plate 54 and is connected to the expansion movable plate 53 to drive the expansion movable plate 53 to move toward or away from the expansion base plate 54. The upper mold assembly 51 is arranged on a side of the expansion movable plate 53 close to the expansion bottom plate 54. The expansion bottom plate 54 is provided with a through hole 54A corresponding to the upper mold assembly 51. The expansion driving member 52 drives the expansion movable plate 53 to move, thereby driving the upper mold assembly 51 arranged on the movable plate 53 to reciprocate between the expansion state and the material discharge state. Specifically, the upper mold assembly 51 is driven by the movable plate 53 to sequentially pass through the through hole 54A and the through hole 211A, and penetrate into the elastic sleeve 212 expansion heat shrinkable part, and the upper mold assembly 51 is in the expansion state; after the upper mold assembly 51 is driven by the movable plate 53 to separate from the elastic sleeve 212 and the heat shrinkable part, it sequentially passes through the through hole 211A and the through hole 54A to return to the initial position, and the upper mold assembly 51 is in the material discharge state. The upper mold assembly 51 can be set at the middle position of the expansion movable plate 53, or at both ends. If it is set at both ends, in order to further reduce the impact of the eccentric load, a counterweight block is fixed on the other side of the upper mold assembly 51 installed on the expansion movable plate 53 to balance the weight of the upper mold assembly 51.

[0051] In one embodiment, please refer to Fig. 9 The expansion movable plate 53 is provided with a sleeve hole 53A, and the upper mold assembly 51 is fixedly mounted in the sleeve hole 53A. The upper mold assembly 51 also includes an upper mold outer sleeve 512 fixedly mounted in the sleeve hole 53A and an upper mold inner sleeve 513 fixedly mounted in the upper mold outer sleeve 512. The expansion rod 511 is connected to one side of the upper mold inner sleeve 513 close to the expansion bottom plate 54.

[0052] It can be understood that the expansion movable plate 53 is provided with a sleeve hole 53A, which can facilitate the replacement of the upper mold assembly 51. The sleeve hole 53A is provided at the end of the expansion movable plate 53. The sleeve hole 53A has a supporting portion and a removal portion that are connected and arranged. The upper mold assembly 51 is fixed to the supporting portion by locking parts such as bolts and screws. When the upper mold assembly 51 needs to be replaced, the expansion movable plate 53 is removed through the removal portion. Furthermore, the upper mold outer sleeve 512 and the upper mold inner sleeve 513 are provided to facilitate the replacement of the expansion rod 511 to match different types of heat shrink parts. In one embodiment, please refer to Figure 6 The rotating mechanism 20 also includes a rotating drive member 22, a column 23 and a plurality of rotating shafts 24 fixed to the column 23. The number of the rotating shafts 24 corresponds to the number of workstations. The plurality of rotating shafts 24 are evenly distributed around the column 23. The plurality of lower mold assemblies 21 are respectively fixed to the plurality of rotating shafts 24. One end of the column 23 is connected to the driving portion of the rotating drive member 22. The other end of the column 23 is rotatably connected to the frame body 10. The rotating drive member 22 drives the column 23 to intermittently move, so that the plurality of lower mold assemblies 21 intermittently pass through the loading station 201, the heating station 202, the cooling station 203 and the unloading station 204.

[0053] It can be understood that setting up multiple rotating shafts 24 can realize an efficient production process in which multiple lower mold assemblies 21 are multi-stationed and process different processes at the same time. For example, four rotating shafts 24 are set, namely the first rotating shaft, the second rotating shaft, the third rotating shaft, and the fourth rotating shaft. The first rotating shaft is in the loading station, loading the heat shrinkable parts to be expanded, the second rotating shaft is in the heating station, heating the heat shrinkable parts to be expanded, the third rotating shaft is in the cooling station, expanding and cooling the heated heat shrinkable parts, and the fourth rotating shaft is in the unloading station, unloading the heat shrinkable parts after expansion. In this way, the lower mold assembly 21 on each blade is performing different tasks. This design allows each station to be fully utilized without idle time, thereby maximizing production efficiency. Of course, the number of rotating shafts 24 can also be set to a multiple of 3, such as 3, 6, 9, etc. In this case, the loading station 201 and the unloading station 204 are at the same position, and the number of rotating shafts 24 can also be set to a multiple of 4, such as 4, 8, 12, 16, etc. In this case, the number of heating mechanisms 30, cooling mechanisms 40, and expansion mechanisms 50 matches the number of stations. Of course, multiple lower mold assemblies 21 can be set under each rotating shaft 24, such as 2 or 3. When 4 or more lower mold assemblies 21 are set, the expansion rod 511 of the lower mold assembly 21 will have great resistance when it is separated from the elastic sleeve 212 and the heat shrinkable part, and unloading will become extremely difficult. The rotating drive member 22 can be a divider, and the rotating drive member 22 drives the column 23 to rotate intermittently, thereby driving the multiple rotating shafts 24, and the lower mold assembly 21 arranged under the multiple rotating shafts 24 to rotate according to a predetermined order and time interval, so that the lower mold assembly 21 passes through each station, such as passing through the loading station 201, the heating station 202, the cooling station 203 and the unloading station 204 in sequence, or passing through the loading station, the first heating station, the second heating station, the cooling station and the unloading station in sequence. Passing through two heating stations can make the heating and softening of the heat shrinkable parts more efficient, which is more conducive to the next expansion process. The order and number of stations that the lower mold assembly 21 passes through can be determined according to actual conditions and are not limited here.

[0054] It can be understood that in order to adapt to the expansion of heat shrinkable parts of different shapes, the lower mold assembly 21 is matched with the upper mold assembly 51, and the lower mold 211 includes a lower mold plate fixedly connected to the rotating shaft 24, a lower mold outer sleeve fixed to the lower mold outer sleeve, and a lower mold inner sleeve fixed to the lower mold outer sleeve, and the lower mold inner sleeve has a through hole 211A.

[0055] In one embodiment, please refer to Figure 7 The heating mechanism 30 includes a first lifting seat body 31 fixedly connected to the frame body 10, a first lifting bracket 32 ​​slidably connected to the first lifting seat body 31, and a first driving member 33. The first lifting bracket 32 ​​is provided with the heating member 34. The driving part of the first driving member 33 drives the first lifting bracket 32 ​​to make the heating member 34 reciprocate between the heating position 301 and the restoring position 302.

[0056] It can be understood that the first lifting bracket 32 ​​and the first lifting seat body 31 can be connected by a sliding connection method of a slide rail and a slider, and the first driving member 33 realizes the up and down sliding of the first lifting bracket 32 ​​on the first lifting seat body 31 by a sprocket transmission method, so that the heating member 34 is close to the lower mold assembly 21 to heat the heat shrinkable member, or the heating member 34 is away from the lower mold assembly 21 and returns to the initial position. One heating member can be set on the first lifting bracket 32, or two heating members can be set, so that one heating station 202 or two heating stations 202 are formed, that is, the number of heating members is consistent with the number of heating stations, and the number of heating members is determined according to actual conditions and is not limited here. The first driving member 33 can be a driving structure such as a cylinder, a motor, etc., which is not limited here.

[0057] In one embodiment, please refer to Figure 7 The heating element 34 is a heating cylinder, which includes a cylinder, a heating rod extending into the inner cavity of the cylinder and a conical sleeve located at the opening of the cylinder. The cylinder is provided with a feed port and a discharge port connected to the inner cavity of the cylinder. The feed port is located near the bottom of the cylinder, and the discharge port is located near the opening of the cylinder.

[0058] It is understandable that silicone oil, glycerin and other heating media can be placed in the heating cylinder, and the heating rod is inserted into the inner cavity of the cylinder and directly contacts the heating medium to improve the heating effect. The heating rod can be spirally wound and arranged in the inner cavity of the cylinder, or vertically and parallelly arranged in the inner cavity of the cylinder. The arrangement of the heating rod can be determined according to actual conditions and is not limited here. The setting of the conical sleeve can reduce the overflow and splashing of the heating medium.

[0059] In one embodiment, please refer to Figure 8The cooling mechanism 40 includes a second lifting seat body 41 fixedly connected to the frame body 10, a second lifting bracket 42 slidably connected to the second lifting seat body 41, and a second driving member 43. The second lifting bracket 42 is provided with the cooling member 44. The driving part of the second driving member 43 drives the second lifting bracket 42 to make the cooling member 44 reciprocate between the cooling position 401 and the return position 402.

[0060] It can be understood that the second lifting bracket 42 and the second lifting seat body 41 can be connected by a sliding connection method of a slide rail and a slider, and the second driving member 43 realizes the up and down sliding of the second lifting bracket 42 on the second lifting seat body 41 by a sprocket transmission method, so that the cooling member 44 is close to the lower mold assembly 21 to cool the heat shrinkable member, or the cooling member 44 is away from the lower mold assembly 21 and returns to the initial position. The first driving member 33 can be a driving structure such as a cylinder, a motor, etc., which is not limited here. The cooling member 44 can be a cooling cylinder, and the cooling cylinder includes a cylinder body, a conical sleeve located at the opening of the cylinder body, and the cylinder body is provided with a feed port and a discharge port connected to the inner cavity of the cylinder body. The feed port is located near the bottom of the cylinder body, and the discharge port is located near the opening of the cylinder body. A cooling medium is placed in the cylinder body, and the cooling medium can be water.

[0061] In one embodiment, please refer to Fig.10 The heat shrinkable part expansion device 100 also includes a positioning mechanism 60, which is located between the expansion mechanism 50 and the cooling position 401 of the cooling mechanism 40. The positioning mechanism 60 includes a positioning seat 61 provided on the frame body 10, a positioning cylinder 62 provided on the positioning seat 61, and a positioning block 63 connected to the output end of the positioning cylinder 62. The lower mold 211 of the lower mold assembly 21 is provided with a positioning groove 211B corresponding to the positioning block 63.

[0062] It is understandable that when the upper mold assembly 51 moves downward relative to the lower mold assembly 21, the positioning cylinder 62 drives the positioning block 63 to extend and insert into the positioning groove 211B to ensure that the upper mold assembly 51 and the lower mold assembly 21 can match and accurately position. When expanding, the expansion rod 511 of the upper mold assembly 51 is pressed downward, which may easily cause the rotating shaft 24 to be bent. The positioning block 63 can also play a supporting role to prevent the rotating shaft 24 from being bent.

[0063] In one embodiment, please refer to Fig.11 The heat shrinkable part expansion device 100 also includes a supporting mechanism 70 arranged adjacent to the rotating mechanism 20, and the supporting mechanism 70 includes a supporting seat 71 arranged on the frame body 10, a supporting cylinder 72 arranged on the supporting seat 71, and a supporting rod 73 connected to the output end of the supporting cylinder 72, and the supporting rod 73 supports the lower mold 211.

[0064] It can be understood that the supporting mechanism 70 is arranged adjacent to the rotating mechanism 20, and can be arranged adjacent to other stations except the cooling station 203. The supporting cylinder 72 is started after the rotating drive member 24 runs a certain angle, and the supporting cylinder 72 pushes the supporting rod 73 to extend and abut against the lower mold 211, thereby ensuring the matching accuracy of the upper mold assembly 51 and the lower mold assembly 21. Taking the four rotating shafts 24 as an example, the angle of each movement of the rotating drive member 22 is 90 degrees, the rotating drive member 24 runs 90 degrees to a certain station, the supporting cylinder 72 pushes the supporting rod 73 to extend and abut against the lower mold 211, and the lower mold assembly 21 completes the corresponding process at the corresponding station, the supporting cylinder 72 retracts, driving the supporting rod 73 to retract, and the rotating drive member 24 runs 90 degrees again to the next station, and so on.

[0065] In one embodiment, please refer to Figure 4 The heat shrinkable expansion device 100 further includes an exhaust mechanism 80 disposed on the frame body 10, and the exhaust mechanism 80 is disposed adjacent to the heating mechanism 30 to remove the heating medium dispersed in the air and emitted by the heating element 34. It can be understood that the exhaust mechanism 80 can be a blower, a fan, an exhaust pump, etc.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heat shrinkable expansion device, characterized in that: include: Frame body; A rotating mechanism is arranged on the frame body, comprising a lower die assembly, wherein the lower die assembly comprises a lower die with a through hole and an elastic sleeve arranged on the lower die, the elastic sleeve is sleeved with the heat shrinkable part outside, and the lower die assembly rotates through a loading station, a heating station, a cooling station and a unloading station; A heating mechanism is provided on the frame body, comprising a heating element for heating the heat shrinkable element, the heating element is located below the heating station of the lower mold assembly, and comprises a heating position close to the lower mold assembly and a restoring position away from the lower mold assembly; A cooling mechanism is provided on the frame body, comprising a cooling member for cooling the heat shrinkable member, the cooling member is located below the cooling station of the lower mold assembly, and comprises a cooling position close to the lower mold assembly and a return position away from the lower mold assembly; The expansion mechanism is arranged on the frame body, located above the lower mold assembly and arranged relative to the cooling mechanism, including an upper mold assembly, the upper mold assembly including an expansion rod, and the upper mold assembly has an expansion state and a blanking state. When the lower mold assembly is in the cooling station, the upper mold assembly moves downward relative to the lower mold assembly so that the expansion rod passes through the through hole into the elastic sleeve to expand the heat shrinkable part, and the upper mold assembly is in the expansion state; the upper mold assembly moves upward relative to the lower mold assembly so that the expansion rod is separated from the heat shrinkable part, and the upper mold assembly is in the blanking state.

2. The heat shrinkable expansion device according to claim 1, characterized in that: The expansion mechanism also includes an expansion drive member, an expansion base plate fixedly connected to the frame body, and an expansion movable plate slidably connected to the expansion base plate. The upper mold assembly is arranged on a side of the expansion movable plate close to the expansion base plate. The expansion base plate is provided with a through hole corresponding to the upper mold assembly. The driving part of the expansion drive member drives the expansion movable plate to make the upper mold assembly reciprocate between the expansion state and the unloading state.

3. The heat shrinkable expansion device according to claim 2, characterized in that: The expansion movable plate is provided with a sleeve hole, the upper mold assembly is fixedly mounted in the sleeve hole, the upper mold assembly also includes an upper mold outer sleeve fixedly mounted in the sleeve hole and an upper mold inner sleeve fixedly mounted in the upper mold outer sleeve, and the expansion rod is connected to a side of the upper mold inner sleeve close to the expansion bottom plate.

4. The heat shrinkable expansion device according to claim 1, characterized in that: The rotating mechanism also includes a rotating drive member, a column and a plurality of rotating shafts fixed to the column, the number of the rotating shafts corresponds to the number of workstations, the plurality of rotating shafts are evenly distributed around the column, the plurality of lower mold assemblies are respectively fixed to the plurality of rotating shafts, one end of the column is connected to the driving part of the rotating drive member, the other end of the column is rotatably connected to the frame body, the rotating drive member drives the column to intermittently move, so that the plurality of lower mold assemblies intermittently pass through the loading station, the heating station, the cooling station and the unloading station.

5. The heat shrinkable expansion device according to claim 1, characterized in that: The heating mechanism includes a first lifting seat body fixedly connected to the frame body, a first lifting bracket slidably connected to the first lifting seat body, and a first driving member, the first lifting bracket is provided with the heating element, and the driving part of the first driving member drives the first lifting bracket to make the heating element reciprocate between the heating position and the restoring position.

6. The heat shrinkable expansion device according to claim 5, characterized in that: The heating element is a heating cylinder, which includes a cylinder, a heating rod extending into the inner cavity of the cylinder and a conical sleeve located at the opening of the cylinder. The cylinder is provided with a feed port and a discharge port connected to the inner cavity of the cylinder. The feed port is located near the bottom of the cylinder, and the discharge port is located near the opening of the cylinder.

7. The heat shrinkable expansion device according to claim 1, characterized in that: The cooling mechanism includes a second lifting seat body fixedly connected to the frame body, a second lifting bracket slidably connected to the second lifting seat body, and a second driving member, the second lifting bracket is provided with the cooling member, and the driving part of the second driving member drives the second lifting bracket to make the cooling member reciprocate between the cooling position and the return position.

8. The heat shrinkable component expansion device according to any one of claims 1 to 7, characterized in that: The heat shrinkable parts expansion device also includes a positioning mechanism, which is located between the expansion mechanism and the cooling position of the cooling mechanism. The positioning mechanism includes a positioning seat arranged on the frame body, a positioning cylinder arranged on the positioning seat and a positioning block connected to the output end of the positioning cylinder. The lower mold of the lower mold assembly is provided with a positioning groove corresponding to the positioning block.

9. The heat shrinkable component expansion device according to any one of claims 1 to 7, characterized in that: The heat shrinkable parts expansion device also includes a supporting mechanism arranged adjacent to the rotating mechanism, the supporting mechanism includes a supporting seat arranged on the frame body, a supporting cylinder arranged on the supporting seat and a supporting rod connected to the output end of the supporting cylinder, and the supporting rod supports the lower mold.

10. The heat shrinkable component expansion device according to any one of claims 1 to 7, characterized in that: The heat shrinkable component expansion device further comprises an exhaust mechanism disposed on the frame body, wherein the exhaust mechanism is disposed adjacent to the heating mechanism; Alternatively, the expansion rod is provided with an avoidance groove corresponding to the axial direction of the elastic sleeve.

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