Heat shrinkable tube baking machine

Abstract

The present invention relates to the technical field of baking machines, and proposes a heat shrinkable tube baking machine, which is small in size, convenient to move, adjustable in size, and can be used for the auxiliary heating of heat shrinkable tubes on materials of various sizes. It has good versatility and applicability, flexible adjustment operation, small occupied space for folding and storage, and is relatively practical. It includes a plurality of infrared heating plates, and also includes a connecting frame and a first operating handle and a second operating handle that are rotatably connected to each other. A first operating plate and a second operating plate are respectively rotatably connected to the first operating handle and the second operating handle. The connecting frame is provided with a plurality of first connecting holes and a plurality of second connecting holes. A first connecting shaft is arranged in one of the plurality of first connecting holes, and a second connecting shaft is arranged in one of the plurality of second connecting holes. The first operating plate and the second operating plate are respectively provided with a first hole and a second hole, and the first operating plate and the second operating plate are respectively connected with a first adjusting frame and a second adjusting frame.

Description

Technical Field

[0001] The present invention relates to the technical field of baking machines, and particularly relates to a heat shrinkable tube baking machine. Background Art

[0002] As is well known, a heat shrinkable tube, also known as a heat shrink protection sleeve, can provide insulation protection for substances such as wires, cables, and wire terminals. It has characteristics such as high-temperature shrinkage, soft flame retardancy, and insulation and corrosion prevention. When heat shrinking and installing a heat shrinkable tube relative to substances such as wires, cables, and wire terminals, a baking machine is usually required for auxiliary baking to increase the temperature of the heat shrinkable tube and achieve the effect of high-temperature shrinkage of the heat shrinkable tube, thereby realizing the heat shrinkage installation of the heat shrinkable tube.

[0003] After retrieval, a Chinese patent with the publication number CN206465453U, which was published on September 5, 2017, discloses a heat shrinkable tube baking machine. It is generally described as including a frame, a track transmission mechanism, and a shield mechanism. The track transmission mechanism is arranged on the frame, and the shield mechanism is arranged above the track transmission mechanism. One end of the shield mechanism is rotatably connected to the frame. Corresponding infrared heating plates are provided on the track transmission mechanism and the shield mechanism. The track transmission mechanism includes a transmission frame, transmission wheels, and a driver. The transmission wheels are arranged on the transmission frame. There are four transmission wheels, two in a group. The two transmission wheels in each group are connected by a track. The driver is connected to one transmission wheel. The infrared heating plate is arranged on the transmission frame between the two groups of transmission wheels. The shield mechanism includes a shield and synchronous wheels. One end of the shield is rotatably connected to the frame. The synchronous wheels are arranged on the shield. There are four synchronous wheels, two in a group. The two synchronous wheels in each group are connected by a track. The track of the transmission wheels and the track of the synchronous wheels are mutually attached to drive the synchronous wheels to rotate. The infrared heating plate is arranged on the shield between the two groups of synchronous wheels. When in use, the material sleeved with the heat shrinkable tube is conveyed into the shield for heating through the tracks of the upper and lower attached transmission wheels and the tracks of the synchronous wheels. Through the parameter control of the control panel, the temperature in the shield and the rotation speed of the driver are controlled.

[0004] Although the above-mentioned prior art solution can be used for auxiliary baking during the heat shrinkage installation of heat shrinkable tubes, during its operation process, the material sleeved with the heat shrinkable tube needs to be conveyed into the shield for heating through the tracks of the upper and lower attached transmission wheels and the tracks of the synchronous wheels, that is, the material sleeved with the heat shrinkable tube needs to be moved during the heating process. Thus, it is difficult to apply to materials with longer dimensions or larger, heavier volumes, and its versatility and applicability need to be further improved. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a heat-shrinkable sleeve baking machine, which is small in size, convenient to move, adjustable in size, and can be used for the auxiliary heating of heat-shrinkable sleeves on materials of various sizes. It has good versatility and applicability, flexible adjustment operation, and small space occupation for folding and storage, and is relatively practical.

[0007] (II) Technical Solution

[0008] To achieve the above object, the present invention provides the following technical solution: A heat-shrinkable sleeve baking machine includes a plurality of infrared heating plates, and also includes a connecting frame and a first operating handle and a second operating handle that are rotatably connected to each other. A first operating plate and a second operating plate are respectively rotatably connected to the first operating handle and the second operating handle. A plurality of first connection holes and a plurality of second connection holes are provided on the connecting frame. A first connection shaft is provided in one of the plurality of first connection holes, and a second connection shaft is provided in one of the plurality of second connection holes. A first hole and a second hole are respectively formed on the first operating plate and the second operating plate. The first connection shaft matches the first hole, and the second connection shaft matches the second hole. A first adjusting frame and a second adjusting frame are respectively connected to the first operating plate and the second operating plate. The first adjusting frame includes a plurality of first telescopic prism frames and a plurality of first telescopic prism plates. The leftmost first telescopic prism frame among the plurality of first telescopic prism frames is connected to the first operating plate through a first pressing bolt. The plurality of first telescopic prism plates are respectively slidably connected in the plurality of first telescopic prism frames, and the first telescopic prism plates in the plurality of first telescopic prism frames are respectively connected to their adjacent first telescopic prism frames through first connection components. The second adjusting frame includes a plurality of second telescopic prism frames and a plurality of second telescopic prism plates. The leftmost second telescopic prism frame among the plurality of second telescopic prism frames is connected to the second operating plate through a second pressing bolt. The plurality of second telescopic prism plates are respectively slidably connected in the plurality of second telescopic prism frames, and the second telescopic prism plates in the plurality of second telescopic prism frames are respectively connected to their adjacent second telescopic prism frames through second connection components. Installation cavities are provided in the plurality of first telescopic prism frames, the plurality of first telescopic prism plates, the plurality of second telescopic prism frames, and the plurality of second telescopic prism plates. The plurality of infrared installation plates are respectively installed in the plurality of installation cavities.

[0009] Based on the foregoing solution, a plurality of the first connection components each include a first rotating column, and the plurality of first rotating columns are respectively rotatably connected within a plurality of first telescopic ridge frames. A first connecting shaft is connected to each of the plurality of first rotating columns through a first tension spring. A first adjustment hole matching the first connecting shaft is provided on each of the plurality of first telescopic ridge frames and the plurality of first telescopic ridge plates. A plurality of the second connection components each include a second rotating column, and the plurality of second rotating columns are respectively rotatably connected within a plurality of second telescopic ridge frames. A second connecting shaft is connected to each of the plurality of second rotating columns through a second tension spring. A second adjustment hole matching the second connecting shaft is provided on each of the plurality of second telescopic ridge frames and the plurality of second telescopic ridge plates.

[0010] Preferably based on the foregoing solution, a plurality of protruding ridges are provided on each of the plurality of first connecting shafts and the plurality of second connecting shafts, and a plurality of ridge grooves are provided in each of the plurality of first adjustment holes and the plurality of second adjustment holes. The plurality of ridge grooves respectively match the plurality of protruding ridges.

[0011] Further based on the foregoing solution, an operation ring is fixedly connected to the front end of each of the plurality of first connecting shafts and the front end of each of the plurality of second connecting shafts.

[0012] Still further based on the foregoing solution, a clamping plate groove is provided on each of the plurality of first telescopic ridge frames and the plurality of second telescopic ridge frames. A guiding block is fixedly connected to the inner front wall of each of the clamping plate grooves. A pressing screw is threadedly connected to each of the guiding blocks. An insertion hole is provided on each of the plurality of first telescopic ridge frames and the plurality of second telescopic ridge frames. The plurality of pressing screws are respectively arranged in the plurality of insertion holes. A strip groove is provided on each of the plurality of first telescopic ridge plates and the plurality of second telescopic ridge plates. The plurality of guiding blocks are respectively slidably fitted in the plurality of strip grooves.

[0013] Even further based on the foregoing solution, an operation block is fixedly connected to the front end of each of the plurality of pressing screws.

[0014] As a further aspect of the above solution, a grip sleeve is installed on each of the first operating handle and the second operating handle.

[0015] As a still further aspect of the above solution, a buffer block is provided on each of the first operating handle and the second operating handle, and the two buffer blocks cooperate with each other.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a heat shrinkable tube baking machine, which has the following beneficial effects:

[0018] 1. In the present invention, through the cooperation of the first adjusting frame and the second adjusting frame, a surrounding structure is formed relative to the material sleeved with a heat-shrinkable tube. At the same time, the sizes of both the first adjusting frame and the second adjusting frame are adjustable, which can be applicable to the auxiliary heating of heat-shrinkable tubes on materials of various sizes, with good versatility and applicability. Meanwhile, the occupied space for folding and storage is relatively small.

[0019] 2. In the present invention, through the design of the first connection component, auxiliary positioning after the shape adjustment of the first adjusting frame is formed. Through the design of the second connection component, auxiliary positioning after the shape adjustment of the second adjusting frame is formed, so as to facilitate the realization of the auxiliary heating of heat-shrinkable tubes on materials of various shapes, and the adjustment operation is relatively flexible.

[0020] 3. In the present invention, through the cooperation of the connecting frame, the first operating handle, the second operating handle, the first operating plate and the second operating plate, the installation of the first adjusting frame and the second adjusting frame is realized, and a driving structure of the first adjusting frame and the second adjusting frame is formed. It is small in volume, convenient to move, simple in operation and good in practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structure schematic diagram of the whole of the present invention;

[0022] Figure 2 is of the present invention Figure 1 is a partial enlarged structure schematic diagram at A in;

[0023] Figure 3 is of the present invention Figure 1 is a partial enlarged structure schematic diagram at B in;

[0024] Figure 4 is of the present invention Figure 1 is a partial enlarged structure schematic diagram at C in;

[0025] Figure 5 is a disassembled three-dimensional structure schematic diagram of the cooperation of the first rotating column, the first tension spring and the first coupling shaft, etc. of the present invention;

[0026] Figure 6 is a three-dimensional structure schematic diagram of the cooperation of the first telescopic prism frame and the guiding block of the present invention;

[0027] Figure 7 is a three-dimensional structure schematic diagram of the opening of the installation cavity in the first telescopic prism frame and the first telescopic prism plate of the present invention;

[0028] Figure 8 is a partial cross-sectional three-dimensional structure schematic diagram of the cooperation of the second rotating column, the second tension spring and the second coupling shaft, etc. of the present invention.

[0029] In the figure: 1, connecting frame; 2, first operating handle; 3, second operating handle; 4, first operating plate; 5, second operating plate; 6, first connecting shaft; 7, second connecting shaft; 8, first telescopic ribbed frame; 9, first telescopic ribbed plate; 10, first pressing bolt; 11, second telescopic ribbed frame; 12, second telescopic ribbed plate; 13, second pressing bolt; 14, installation cavity; 15, first rotating column; 16, first tension spring; 17, first coupling shaft; 18, second rotating column; 19, second tension spring; 20, second coupling shaft; 21, protruding ridge; 22, ridge groove; 23, operating ring; 24, clamping plate groove; 25, guiding block; 26, pressing screw; 27, operating block; 28, holding sleeve; 29, buffer block. Detailed implementation mode

[0030] Embodiment

[0031] Please refer to Figure 1-8 , a heat-shrinkable tube baking machine, including a plurality of infrared heating plates, further including a connecting frame 1 and a first operating handle 2 and a second operating handle 3 that are rotatably connected to each other. Holding sleeves 28 are installed on both the first operating handle 2 and the second operating handle 3 to provide a holding position during operation. Buffer blocks 29 are provided on both the first operating handle 2 and the second operating handle 3. The two buffer blocks 29 cooperate with each other. When the first operating handle and the second operating plate 5 rotate and approach each other, the instantaneous impact force when they come into contact with each other can be reduced, achieving a good buffering effect. A first operating plate 4 and a second operating plate 5 are respectively rotatably connected to the first operating handle 2 and the second operating handle 3. A plurality of first connection holes and a plurality of second connection holes are provided on the connecting frame 1. A first connecting shaft 6 is provided in one of the plurality of first connection holes, and a second connecting shaft 7 is provided in one of the plurality of second connection holes. A first hole and a second hole are respectively formed on the first operating plate 4 and the second operating plate 5. The first connecting shaft 6 matches the first hole, and the second connecting shaft 7 matches the second hole. Through the cooperation of the connecting frame 1, the first operating handle 2, the second operating handle 3, the first operating plate 4 and the second operating plate 5, the installation of the first adjusting frame and the second adjusting frame is realized, forming a driving structure for the first adjusting frame and the second adjusting frame. It is small in size, convenient to move, relatively simple to operate, and has good practicability.

[0032] It should be further noted that a first adjusting frame and a second adjusting frame are respectively connected to the first operation plate 4 and the second operation plate 5. The first adjusting frame includes a plurality of first telescopic rib frames 8 and a plurality of first telescopic rib plates 9. The leftmost first telescopic rib frame 8 among the plurality of first telescopic rib frames 8 is connected to the first operation plate 4 through a first pressing bolt 10. The plurality of first telescopic rib plates 9 are respectively slidably connected within the plurality of first telescopic rib frames 8, and the first telescopic rib plates 9 within the plurality of first telescopic rib frames 8 are respectively connected to the adjacent first telescopic rib frames 8 through first connection components. The second adjusting frame includes a plurality of second telescopic rib frames 11 and a plurality of second telescopic rib plates 12. The leftmost second telescopic rib frame 11 among the plurality of second telescopic rib frames 11 is connected to the second operation plate 5 through a second pressing bolt 13. The plurality of second telescopic rib plates 12 are respectively slidably connected within the plurality of second telescopic rib frames 11, and the second telescopic rib plates 12 within the plurality of second telescopic rib frames 11 are respectively connected to the adjacent second telescopic rib frames 11 through second connection components. Installation cavities 14 are provided within the plurality of first telescopic rib frames 8, the plurality of first telescopic rib plates 9, the plurality of second telescopic rib frames 11, and the plurality of second telescopic rib plates 12. A plurality of infrared installation plates are respectively installed within the plurality of installation cavities 14. Through the cooperation of the first adjusting frame and the second adjusting frame, a surrounding structure is formed relative to the material sleeved with a heat shrinkable tube. At the same time, the sizes of both the first adjusting frame and the second adjusting frame are adjustable, enabling the auxiliary heating of heat shrinkable tubes on materials of various sizes, with good versatility and applicability. Meanwhile, the folded storage space occupies less space. Clamping plate grooves 24 are provided on the plurality of first telescopic rib frames 8 and the plurality of second telescopic rib frames 11. Guide blocks 25 are fixedly connected to the inner front walls of the plurality of clamping plate grooves 24. Compression screw rods 26 are respectively threadedly connected to the plurality of guide blocks 25. Insertion holes are provided on the plurality of first telescopic rib frames 8 and the plurality of second telescopic rib frames 11. The plurality of compression screw rods 26 are respectively arranged within the plurality of insertion holes. Slot grooves are provided on the plurality of first telescopic rib plates 9 and the plurality of second telescopic rib plates 12. The plurality of guide blocks 25 are respectively slidably engaged within the plurality of slot grooves, realizing the direction guidance and the auxiliary positioning of the relative positions of the two when the first telescopic rib plate 9 is adjusted relative to the first telescopic rib frame 8. At the same time, it also realizes the direction guidance and the auxiliary positioning of the relative positions of the two when the second telescopic rib plate 12 is adjusted relative to the second telescopic rib frame 11. Operation blocks 27 are fixedly connected to the front ends of the plurality of compression screw rods 26, facilitating the grasping operation for the auxiliary rotation of the compression screw rods 26.

[0033] It should be further noted that multiple first connection components each include a first rotating column 15. The multiple first rotating columns 15 are respectively rotatably connected within multiple first telescopic rib frames 8. A first connecting shaft 17 is connected to each of the multiple first rotating columns 15 through a first tension spring 16. First adjustment holes matching the first connecting shaft 17 are provided on both the multiple first telescopic rib frames 8 and the multiple first telescopic rib plates 9. Multiple second connection components each include a second rotating column 18. The multiple second rotating columns 18 are respectively rotatably connected within multiple second telescopic rib frames 11. A second connecting shaft 20 is connected to each of the multiple second rotating columns 18 through a second tension spring 19. Second adjustment holes matching the second connecting shaft 20 are provided on both the multiple second telescopic rib frames 11 and the multiple second telescopic rib plates 12. Through the design of the first connection component, auxiliary positioning after the shape adjustment of the first adjustment frame is formed. Through the design of the second connection component, auxiliary positioning after the shape adjustment of the second adjustment frame is formed. Thus, it is convenient to realize the auxiliary heating of heat shrinkable tubes on materials of various shapes, and the adjustment operation is relatively flexible. Multiple protruding ridges 21 are provided on both the multiple first connecting shafts 17 and the multiple second connecting shafts 20. Multiple ridge grooves 22 are provided in both the multiple first adjustment holes and the multiple second adjustment holes. The multiple ridge grooves 22 respectively match the multiple protruding ridges 21 to realize the mutual connection and positioning between the mutually cooperating first telescopic rib frame 8 and the first telescopic rib plate 9, and the mutual connection and positioning between the mutually cooperating second telescopic rib frame 11 and the second telescopic rib plate 12. Operation rings 23 are fixedly connected to the front ends of both the multiple first connecting shafts 17 and the multiple second connecting shafts 20, facilitating the forward pulling of the first connecting shaft 17 and the second connecting shaft 20.

[0034] In summary, the working process of the heat shrink tube baking machine is as follows: when in use, the heat shrink tube baking machine is first carried to the desired location, and the first adjustment frame and the second adjustment frame are adjusted according to the desired size and shape. After the adjustment is completed, the operator turns on the power of the infrared heating plate, holds the gripping sleeve 28 on the first operating handle 2 and the gripping sleeve 28 on the second operating handle 3 with both hands, and moves the left ends of the first operating handle 2 and the second operating handle 3 away from each other, and moves the left ends of the first operating panel 4 and the second operating panel 5 supported by the connecting frame 1 closer to each other, and at the same time, moves the right ends of the first operating panel 4 and the second operating panel 5 away from each other, and The right ends of the two operating panels 5 move away from each other, causing the right end of the first adjusting frame and the right end of the second adjusting frame to rotate and open relative to each other, and then by moving the first adjusting frame and the second adjusting frame, the material covered with the heat shrinkable tube enters the enclosed area of ​​the first adjusting frame and the second adjusting frame, and then the first operating handle 2 and the second operating handle 3 are controlled to rotate relative to each other in opposite directions, so that the left ends of the two are close to each other, thereby realizing the mutual rotation and approach of the right end of the first adjusting frame and the right end of the second adjusting frame, thereby completing the complete enclosement of the material covered with the heat shrinkable tube, and finally the first adjusting frame and the second adjusting frame are controlled to move relative to the material covered with the heat shrinkable tube, and the heat shrinkable tube can be heated by the infrared heating plate.

[0035] Further, when the adjustment of the first adjustment frame is size adjustment, the compression screw 26 in the guide block 25 threadedly connected in the plurality of first telescopic edge frames 8 is rotated to invalidate the compression effect of the plurality of first telescopic edge plates 9 in the plurality of first telescopic edge frames 8, and then the relative position between the mutually matched first telescopic edge plates 9 and the first telescopic edge frames 8 is adjusted to achieve the adjustment of the overall length of the cooperation between the two, thereby achieving the adjustment of the overall size of the first adjustment frame. When the adjustment of the first adjustment frame is shape adjustment, the first connecting shaft 17 can be pulled relative to the first rotating column 15 to invalidate the rotation positioning effect of the first connecting shaft 17 on the mutually connected first telescopic edge frames 8 and the first telescopic edge plates 9. In this state, the aforementioned first telescopic edge plates 9 and the first telescopic edge frames 8 are rotated to adjust each other. A telescopic edge frame 8 is provided to adjust the shape of the first adjustment frame. After the adjustment is completed, the tension on the first connecting shaft 17 is released, so that the first connecting shaft 17 is moved backward and reset under the action of the first tension spring 16, and the relative rotational freedom between the first telescopic edge plate 9 and the first telescopic edge frame 8 is positioned again. Since the first adjustment frame and the second adjustment frame are two identical structures symmetrical to each other, after the adjustment of the first adjustment frame is completed, the corresponding adjustment of the second adjustment frame can be carried out according to the above steps. The names of the first adjustment frame and the second adjustment frame here are only to distinguish the positions of the related structures. At the same time, for the corresponding structures of the first clamping bolt 10 and the second clamping bolt 13, in order to improve the versatility between the various parts, the same connection structure as the first connecting assembly and the second connecting assembly can be adopted.

Claims

1. A heat-shrinkable sleeve baking machine, comprising a plurality of infrared heating plates, Characterized in that, it further comprises a connecting frame (1) and a first operating handle (2) and a second operating handle (3) which are rotatably connected to each other. A first operating plate (4) and a second operating plate (5) are respectively rotatably connected to the first operating handle (2) and the second operating handle (3). A plurality of first connecting holes and a plurality of second connecting holes are provided on the connecting frame (1). A first connecting shaft (6) is provided in one of the plurality of first connecting holes, and a second connecting shaft (7) is provided in one of the plurality of second connecting holes. A first hole and a second hole are respectively formed on the first operating plate (4) and the second operating plate (5). The first connecting shaft (6) matches the first hole, and the second connecting shaft (7) matches the second hole. A first adjusting frame and a second adjusting frame are respectively connected to the first operating plate (4) and the second operating plate (5). The first adjusting frame comprises a plurality of first telescopic prism frames (8) and a plurality of first telescopic prism plates (9). The leftmost one of the plurality of first telescopic prism frames (8) is connected to the first operating plate (4) through a first pressing bolt (10). The plurality of first telescopic prism plates (9) are respectively slidably connected in the plurality of first telescopic prism frames (8), and the first telescopic prism plates (9) in the plurality of first telescopic prism frames (8) are respectively connected to their adjacent first telescopic prism frames (8) through first connecting components. The second adjusting frame comprises a plurality of second telescopic prism frames (11) and a plurality of second telescopic prism plates (12). The leftmost one of the plurality of second telescopic prism frames (11) is connected to the second operating plate (5) through a second pressing bolt (13). The plurality of second telescopic prism plates (12) are respectively slidably connected in the plurality of second telescopic prism frames (11), and the second telescopic prism plates (12) in the plurality of second telescopic prism frames (11) are respectively connected to their adjacent second telescopic prism frames (11) through second connecting components. Installation cavities (14) are provided in the plurality of first telescopic prism frames (8), the plurality of first telescopic prism plates (9), the plurality of second telescopic prism frames (11) and the plurality of second telescopic prism plates (12). A plurality of infrared mounting plates are respectively mounted in the plurality of installation cavities (14); Each of the plurality of first connection components includes a first rotating column (15). The plurality of first rotating columns (15) are respectively rotatably connected within a plurality of first telescopic rib frames (8). A first connecting shaft (17) is connected to each of the plurality of first rotating columns (15) through a first tension spring (16). First adjustment holes matching the first connecting shaft (17) are provided on both the plurality of first telescopic rib frames (8) and the plurality of first telescopic rib plates (9). Each of the plurality of second connection components includes a second rotating column (18). The plurality of second rotating columns (18) are respectively rotatably connected within a plurality of second telescopic rib frames (11). A second connecting shaft (20) is connected to each of the plurality of second rotating columns (18) through a second tension spring (19). Second adjustment holes matching the second connecting shaft (20) are provided on both the plurality of second telescopic rib frames (11) and the plurality of second telescopic rib plates (12). Clamping plate grooves (24) are provided on both the plurality of first telescopic rib frames (8) and the plurality of second telescopic rib frames (11). Guide blocks (25) are fixedly connected to the inner front walls of the plurality of clamping plate grooves (24). Compression screw rods (26) are threadedly connected to each of the plurality of guide blocks (25). Insertion holes are provided on both the plurality of first telescopic rib frames (8) and the plurality of second telescopic rib frames (11). The plurality of compression screw rods (26) are respectively disposed within the plurality of insertion holes. Strip grooves are provided on both the plurality of first telescopic rib plates (9) and the plurality of second telescopic rib plates (12). The plurality of guide blocks (25) are respectively slidably engaged within the plurality of strip grooves.

2. The heat shrinkable tube baking machine according to claim 1, wherein, A plurality of protruding ridges (21) are provided on both the plurality of first connecting shafts (17) and the plurality of second connecting shafts (20). A plurality of ridge grooves (22) are provided within both the plurality of first adjustment holes and the plurality of second adjustment holes. The plurality of ridge grooves (22) respectively match the plurality of protruding ridges (21).

3. The heat shrinkable tube baking machine according to claim 2, wherein, Operation rings (23) are fixedly connected to the front ends of both the plurality of first connecting shafts (17) and the plurality of second connecting shafts (20).

4. The heat shrinkable tube baking machine according to claim 3, wherein, Operation blocks (27) are fixedly connected to the front ends of the plurality of compression screw rods (26).

5. The heat shrinkable tube baking machine according to claim 4, wherein, Grip sleeves (28) are installed on both the first operation handle (2) and the second operation handle (3).

6. The heat shrinkable tube baking machine according to claim 5, wherein, Buffer blocks (29) are provided on both the first operation handle (2) and the second operation handle (3). The two buffer blocks (29) cooperate with each other.

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