Steel-plastic conversion pipe fitting heat shrinkable sleeve baking machine

Abstract

The utility model provides a heat shrinkable sleeve baking machine for a steel-plastic conversion pipe fitting. The heat shrinkable sleeve baking machine comprises a machine body, a baking assembly, a first driving piece and a second driving piece, wherein a fixed clamping piece and a rotary clamping piece are arranged on the machine body at intervals, the fixed clamping piece is used for inserting and fixing a to-be-baked steel-plastic conversion pipe fitting, and the rotary clamping piece is used for inserting a to-be-sleeved steel-plastic conversion pipe fitting; the baking assembly is slidably connected to the machine body in the axial direction of the to-be-baked steel-plastic conversion pipe fitting, and the baking assembly is provided with an annular baking hole suitable for annularly sleeving the to-be-baked steel-plastic conversion pipe fitting; the output end of the first driving part is connected with the baking assembly; the second driving piece is arranged on the machine body and the output end is connected with the rotary clamping piece. According to the steel-plastic conversion pipe fitting heat-shrinkable sleeve baking machine provided by the utility model, the whole working process can be operated by a single person, the working efficiency is improved, and the gluing uniformity of the peripheral wall of the steel-plastic conversion pipe fitting and the heating uniformity of a heat-shrinkable sleeve can be improved, so that the heat-shrinkable coating quality of the heat-shrinkable sleeve on the steel-plastic conversion pipe fitting is improved.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline processing technology, specifically relating to a heat shrink tubing baking machine for steel-plastic conversion pipe fittings. Background Technology

[0002] Steel-plastic conversion pipe fittings are commonly used mechanical pipe fittings in urban gas transmission and distribution projects. Normally, these fittings require heat-shrink sleeves to be wrapped around the metal pipe body for corrosion protection. To improve the reliability and tightness of the connection between the heat-shrink sleeve and the pipe body, the heat-shrink process involves first applying adhesive to the area to be wrapped on the pipe body, then placing the heat-shrink sleeve around the pipe body and heating it to complete the heat-shrink wrapping. Currently, most construction sites still use manual handheld heat guns to heat the heat-shrink sleeve, causing it to shrink and adhere to the outer wall of the steel-plastic conversion pipe fitting. This method not only fails to ensure uniform heating of the heat-shrink sleeve, affecting the wrapping quality, but is also very inefficient. Furthermore, both the baking and adhesive application processes require two people to complete, resulting in high labor intensity and costs. Utility Model Content

[0003] In view of the above problems, this utility model provides a heat shrink sleeve baking machine for steel-plastic conversion pipe fittings, which aims to improve the molding quality and work efficiency of covering heat shrink sleeves on steel-plastic conversion pipe fittings and reduce manual labor.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a heat shrink tubing baking machine for steel-plastic conversion pipe fittings, comprising:

[0005] The machine body is equipped with fixed clamping parts and rotating clamping parts at intervals. The fixed clamping parts are used to insert and fix the steel-plastic conversion pipe fittings to be baked, and the rotating clamping parts are used to insert the steel-plastic conversion pipe fittings to be fitted with heat shrink sleeves.

[0006] The baking assembly is slidably connected to the machine body along the axial direction of the steel-plastic conversion pipe fitting to be baked. The baking assembly has an annular baking hole suitable for looping around the steel-plastic conversion pipe fitting to be baked.

[0007] The first driving component is located on the machine body and its output end is connected to the baking assembly;

[0008] The second driving component is located on the machine body and its output end is connected to the rotating clamping component.

[0009] In one possible implementation, the rotating clamp includes:

[0010] A fixed sleeve is fixedly connected to the machine body. The inner circumferential wall of the fixed sleeve is provided with an annular groove, and the end face of the fixed sleeve is provided with a vent pipe communicating with the annular groove. The vent pipe is used to connect to the air pump.

[0011] The rotating sleeve has one end connected to the output end of the second driving component, and the other end sealed and inserted through the fixed sleeve and rotated with the fixed sleeve. The rotating sleeve has multiple air chambers distributed at intervals along its circumference. Multiple air holes are opened on the outer circumference of the rotating sleeve, and each air hole is connected to each air chamber. Each air hole is aligned with the annular groove along the axial direction of the rotating sleeve.

[0012] Multiple arc-shaped clamps are distributed at intervals along the circumference of the rotating sleeve inside the rotating sleeve. Each arc-shaped clamp has a connecting rod extending radially along the rotating sleeve at its center. Each connecting rod is inserted into each air cavity and connected to a blocking plate. The blocking plate is slidably connected to the air cavity, and the peripheral wall of the blocking plate is in sealing contact with the cavity wall of the air cavity.

[0013] In some embodiments, an elastic element is fitted at the part of the connecting rod that enters the air chamber, and the elastic element is used to elastically push the blocking plate.

[0014] For example, one end of the rotating sleeve is connected to an extension sleeve extending toward the second driving member, the end of the extension sleeve away from the rotating sleeve is closed and connected to a spline sleeve, and the spline sleeve is connected to the output end of the second driving member.

[0015] In one possible implementation, the machine body is provided with a slide rail extending axially along the steel-plastic conversion tube to be baked, and the baking assembly includes a slide block and an annular oven; wherein the annular oven is connected to the slide block and aligned with the fixing clamp, and the slide block is slidably connected to the slide rail and connected to the output end of the first drive member.

[0016] For example, the first driving component includes a drive motor and a transmission screw; the drive motor is fixedly connected to the machine body and its output end is connected to the screw, the screw is rotatably connected to the machine body, and the screw passes through the slide and is threadedly engaged with the slide.

[0017] In some embodiments, the machine body is further provided with an auxiliary clamp, which includes a clamping end aligned with the fixed clamping member and a supporting end aligned with the rotating clamping member; the clamping end is used to clamp the end of the heat shrink sleeve on the steel-plastic conversion pipe to be baked, and the supporting end is used to support the steel-plastic conversion pipe to be fitted with the heat shrink sleeve.

[0018] For example, the auxiliary clamp also includes a base, a slide, and a third drive unit; the base is located on the machine body and has two slide rods that extend axially along the steel-plastic conversion pipe at intervals; the slide has a clamping end and a supporting end, and two slide sleeves that are respectively slidably sleeved on the two slide rods at the bottom, and a threaded sleeve is provided between the two slide sleeves; the output end of the third drive unit is connected to a threaded rod, which passes through the threaded sleeve and is threadedly engaged with the threaded sleeve.

[0019] For example, the carriage is equipped with a two-way cylinder, and the two output ends of the two-way cylinder are respectively connected to arc-shaped grippers. The two arc-shaped grippers are arranged to support each other and together form the clamping end.

[0020] In some embodiments, the carriage is equipped with a telescopic cylinder, the output end of which faces upward and is connected to an arc-shaped support plate, which forms a support end.

[0021] The beneficial effects of the heat shrink sleeve baking machine for steel-plastic conversion pipe fittings provided by this utility model are as follows: Compared with the prior art, the heat shrink sleeve baking machine for steel-plastic conversion pipe fittings of this utility model inserts and fixes the steel-plastic conversion pipe fittings into a rotating clamp. The second drive component drives the rotating clamp to rotate, thereby driving the steel-plastic conversion pipe fittings to rotate. This allows the operator to easily apply adhesive evenly to the circumferential wall of the steel-plastic conversion pipe fitting. After the adhesive is applied, the rotation is stopped, and the heat shrink sleeve can be put onto the steel-plastic conversion pipe fitting. Then, the steel-plastic conversion pipe fitting is removed from the rotating clamp and re-inserted and fixed onto the fixed clamp. The first drive component and the baking component are then started, so that the baking component moves back and forth along the axial direction of the steel-plastic conversion pipe fitting to bake the heat shrink sleeve. The whole process can not only be operated by a single person, improving work efficiency, but also improves the uniformity of adhesive application on the circumferential wall of the steel-plastic conversion pipe fitting and the uniformity of heating of the heat shrink sleeve, thereby improving the heat shrink wrapping quality of the heat shrink sleeve on the steel-plastic conversion pipe fitting. Attached Figure Description

[0022] Figure 1 A three-dimensional structural schematic diagram of a heat shrink tubing oven for steel-plastic conversion pipe fittings provided in an embodiment of this utility model;

[0023] Figure 2 This is a cross-sectional view of the rotating clamping member used in an embodiment of the present utility model.

[0024] Figure 3 This is an exploded structural diagram of the rotating clamping component used in the embodiments of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the auxiliary clamp used in the embodiment of this utility model.

[0026] In the diagram: 10. Body; 11. Fixed clamping component; 12. Rotating clamping component; 121. Fixed sleeve; 1211. Annular groove; 1212. Vent pipe; 122. Rotating sleeve; 1221. Air chamber; 1222. Air hole; 123. Arc-shaped clamping plate; 1231. Connecting rod; 1232. Blocking plate; 124. Elastic element; 125. Extension sleeve; 126. Spline sleeve; 13. Slide rail; 20. Steel-plastic conversion fitting; 21. Heat shrink sleeve; 30. Baking components; 31. Slide block; 32. Circular oven; 40. First drive component; 41. Drive motor; 42. Transmission screw; 50. Second drive component; 60. Auxiliary clamp; 61. Base; 611. Slide rod; 62. Slide carriage; 621. Slide sleeve; 622. Screw sleeve; 63. Third drive component; 631. Threaded rod; 64. Two-way cylinder; 641. Arc-shaped gripper; 65. Telescopic cylinder; 651. Arc-shaped support plate; 70. Controller. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0029] Please refer to the following: Figures 1 to 4 The present invention provides a baking machine for heat-shrinkable sleeves 21 on steel-plastic conversion pipe fittings 20. The baking machine includes a body 10, a baking assembly 30, a first drive component 40, and a second drive component 50. The body 10 is provided with a fixed clamping component 11 and a rotating clamping component 12 spaced apart. The fixed clamping component 11 is used to insert and fix the steel-plastic conversion pipe fitting 20 to be baked, and the rotating clamping component 12 is used to insert the steel-plastic conversion pipe fitting 20 to be fitted with a heat-shrinkable sleeve 21. The baking assembly 30 is slidably connected to the body 10 along the axial direction of the steel-plastic conversion pipe fitting 20 to be baked, and the baking assembly 30 has an annular baking hole suitable for circumferentially fitting the steel-plastic conversion pipe fitting 20 to be baked. The first drive component 40 is located on the body 10 and its output end is connected to the baking assembly 30. The second drive component 50 is located on the body 10 and its output end is connected to the rotating clamping component 12.

[0030] It should be noted that, as Figure 1As shown, in this embodiment, a controller 70 with a control panel can be provided on the body 10. The switching actions of the first drive member 40, the second drive member 50 and the baking component 30 can be controlled by operating the control panel. Furthermore, the aforementioned rotating clamping member 12 can be a clamp that is controlled by the controller 70 and can automatically clamp and release, or it can be a manually operated clamping steel-plastic conversion pipe 20.

[0031] The aforementioned baking assembly 30 can be formed by arranging several annular heating wires at intervals along the axial direction of the steel-plastic conversion tube 20 to form an annular baking hole, or it can be formed by arranging several heating tubes at intervals along the circumference of the steel-plastic conversion tube 20 to form an annular baking hole. The use of an annular baking hole can enable the steel-plastic conversion tube 20 to achieve uniform heating of the circumferential wall in a fixed state. Considering that the steel-plastic conversion tube 20 itself is in a static state during the baking heating process of the baking assembly 30 on the heat shrink sleeve 21, the fixing clamp 11 can be a simple shaft hole structure that matches the outer diameter of the steel-plastic conversion tube 20. This not only facilitates the disassembly and assembly of the steel-plastic conversion tube 20, but also has a simple structure and low cost.

[0032] Compared with the prior art, the heat shrink sleeve 21 baking machine for the steel-plastic conversion pipe fitting 20 provided in this embodiment uses a second drive component 50 to drive the rotating clamp 12 to rotate, thereby driving the steel-plastic conversion pipe fitting 20 to rotate. This allows the operator to easily apply adhesive evenly to the peripheral wall of the steel-plastic conversion pipe fitting 20. After the adhesive is applied, the rotation is stopped, and the heat shrink sleeve 21 can be put on the steel-plastic conversion pipe fitting 20. Then, the steel-plastic conversion pipe fitting 20 is removed from the rotating clamp 12 and re-inserted and fixed on the fixed clamp 11. Then, the first drive component 40 and the baking component 30 are started, so that the baking component 30 reciprocates along the axial direction of the steel-plastic conversion pipe fitting 20 to bake the heat shrink sleeve. The whole process can not only be operated by a single person, improving work efficiency, but also improve the uniformity of adhesive application on the peripheral wall of the steel-plastic conversion pipe fitting 20 and the uniformity of heating of the heat shrink sleeve 21, thereby improving the heat shrink wrapping quality of the heat shrink sleeve 21 on the steel-plastic conversion pipe fitting 20.

[0033] In some embodiments, see Figure 2 and Figure 3The rotating clamping member 12 includes a fixed sleeve 121, a rotating sleeve 122, and multiple arc-shaped clamping plates 123. The fixed sleeve 121 is fixedly connected to the machine body 10. The inner circumferential wall of the fixed sleeve 121 has an annular groove 1211, and the end face of the fixed sleeve 121 has a vent pipe 1212 communicating with the annular groove 1211. The vent pipe 1212 is used to connect to an air pump. One end of the rotating sleeve 122 is connected to the output end of the second driving member 50, and the other end is sealed and passes through the fixed sleeve 121 and rotatably engages with the fixed sleeve 121. The rotating sleeve 122 has multiple air chambers 1221 spaced circumferentially within it. Multiple... Each air hole 1222 is connected to a corresponding air cavity 1221, and each air hole 1222 is aligned with the annular groove 1211 along the axial direction of the rotating sleeve 122. Multiple arc-shaped clamping plates 123 are distributed circumferentially inside the rotating sleeve 122. Each arc-shaped clamping plate 123 has a connecting rod 1231 extending radially along the rotating sleeve 122 at its center. Each connecting rod 1231 is inserted into a corresponding air cavity 1221 and connected to a blocking plate 1232. The blocking plate 1232 is slidably connected to the air cavity 1221, and the peripheral wall of the blocking plate 1232 is in sealing contact with the cavity wall of the air cavity 1221.

[0034] When the air pump depressurizes, the blocking plate 1232 can slide freely within the air chamber 1221, causing the arc-shaped clamping plate 123 to loosen the steel-plastic conversion fitting 20. When it is necessary to clamp the steel-plastic conversion fitting 20, the air pump inflates the groove through the air pipe 1212. The airflow enters each air chamber 1221 through each air hole 1222, forming high pressure, thereby pushing the blocking plate 1232 to slide within the air chamber 1221. This, in turn, drives each arc-shaped clamping plate 123 to press against the steel-plastic conversion fitting 20 via the connecting rod 1231. Since each air chamber 1221 is connected to the annular groove 1211 based on each air hole 1222, the air pressure in each air chamber 1221 is consistent. This ensures that the pressure of each arc-shaped clamp 123 on the steel-plastic conversion pipe fitting 20 is balanced, thereby ensuring that the steel-plastic conversion pipe fitting 20 can be fixed in the center of the rotating sleeve 122 with the cooperation of each arc-shaped clamp 123, thus avoiding the jumping of the steel-plastic conversion pipe fitting 20 during rotation and affecting the glue application operation.

[0035] It should be understood that, in this embodiment, as Figure 2 As shown, an elastic element 124 is fitted at the part of the connecting rod 1231 that enters the air chamber 1221. The elastic element 124 is used to elastically push the blocking plate 1232. Specifically, the elastic element 124 can be a disc spring or a spring. After the glue is applied and the heat shrink sleeve 21 is fitted on the steel-plastic conversion pipe fitting 20, the air pump is depressurized, which allows the blocking plate 1232 to move the arc-shaped clamping plate 123 to loosen the steel-plastic conversion pipe fitting 20 under the pushing of the elastic element 124, thereby making it convenient for the operator to remove the steel-plastic conversion pipe fitting 20.

[0036] Considering that rigid contact between the arc-shaped clamp 123 and the steel-plastic conversion pipe 20 is prone to wear on the anti-rust paint surface of the steel-plastic conversion pipe 20 and also affects the clamping stability, in this embodiment, a flexible protective pad, such as a rubber pad or an asbestos pad, can be installed on the clamping surface of the arc-shaped clamp 123.

[0037] As a modified embodiment of the above-mentioned adapter 122, please refer to Figure 2 and Figure 3 One end of the rotating sleeve 122 is connected to an extension sleeve 125 extending toward the second driving member 50. The end of the extension sleeve 125 away from the rotating sleeve 122 is closed and connected to a spline sleeve 126, which is connected to the output end of the second driving member 50. By setting the extension sleeve 125, the steel-plastic conversion pipe fitting 20 can be inserted, so that the clamping parts of each arc-shaped clamping plate 123 on the steel-plastic conversion pipe fitting 20 are closer to the middle part, and the closed end of the extension sleeve 125 can form an axial abutment limit on the steel-plastic conversion pipe fitting 20, which is beneficial to improving the clamping reliability of the steel-plastic conversion pipe fitting 20. Here, the second driving member 50 can specifically be a motor, and the spline sleeve 126 can be inserted and matched with the output shaft of the motor to improve the connection strength and power transmission stability.

[0038] For some possible implementations, please refer to [link / reference]. Figure 1 The machine body 10 is provided with a slide rail 13 extending axially along the steel-plastic conversion tube 20 to be baked. The baking assembly 30 includes a slide block 31 and an annular oven 32. The annular oven 32 is connected to the slide block 31 and aligned with the fixing clamp 11. The slide block 31 is slidably connected to the slide rail 13 and connected to the output end of the first drive member 40. When baking the heat shrink sleeve 21, the first drive member 40 drives the slide block 31 to reciprocate along the slide rail 13, thereby achieving continuous baking of the heat shrink sleeve 21, which can improve the uniformity of heating and thus improve the molding quality of the heat shrink sleeve 21.

[0039] In some embodiments, such as Figure 1As shown, the aforementioned body 10 is also equipped with an auxiliary clamp 60. The auxiliary clamp 60 includes a clamping end aligned with the fixed clamping member 11 and a supporting end aligned with the rotating clamping member 12. The clamping end is used to clamp the end of the heat shrink sleeve 21 on the steel-plastic conversion pipe fitting 20 to be baked, and the supporting end is used to support the steel-plastic conversion pipe fitting 20 to which the heat shrink sleeve 21 is to be fitted. Since the heat shrink sleeve 21 undergoes axial position changes during heating, the clamping end is provided to clamp the end of the heat shrink sleeve 21. This provides a certain supporting force to the steel-plastic conversion pipe fitting 20, preventing the steel-plastic conversion pipe fitting 20 from being suspended for too long and affecting stability. On the other hand, it can also produce a stretching effect on the heat shrink sleeve 21, thereby preventing the heat shrink sleeve 21 from shrinking excessively and causing wrinkles, which is beneficial to improving the molding quality of the heat shrink sleeve 21. The supporting end provides supporting force to the part of the steel-plastic conversion pipe fitting 20 near the middle when the adhesive is applied, thereby preventing the steel-plastic conversion pipe fitting 20 from shaking due to the force of the adhesive application, thus facilitating the adhesive application operation.

[0040] Specifically, see Figure 1 In this embodiment, the first driving component 40 includes a drive motor 41 and a transmission screw 42. The drive motor 41 is fixedly connected to the machine body 10 and its output end is connected to the screw. The screw is rotatably connected to the machine body 10 and passes through the slide block 31 and is threadedly engaged with the slide block 31. The drive motor 41 drives the transmission screw 42 to rotate, thereby driving the slide block 31 to move along the slide rail 13 through the transmission screw 42. The structure is simple and the transmission is stable and without jerking, thus ensuring the smooth movement of the baking component 30 and avoiding the change in the distance between the hole wall of the annular baking hole and the peripheral wall of the heat shrink tube due to the shaking of the baking component 30, which would affect the uniformity of heating.

[0041] Optionally, see Figure 4 In this embodiment, the auxiliary clamp 60 also includes a base 61, a slide 62, and a third drive member 63; the base 61 is provided on the body 10 and has two slide rods 611 that extend axially along the steel-plastic conversion tube 20 at intervals; the slide 62 has a clamping end and a supporting end, and two slide sleeves 621 that are respectively slidably sleeved on the two slide rods 611 at the bottom, and a threaded sleeve 622 is provided between the two slide sleeves 621; the output end of the third drive member 63 is connected to a threaded rod 631, the threaded rod 631 passes through the threaded sleeve 622 and is threadedly engaged with the threaded sleeve 622.

[0042] The third driving component 63 can specifically be a motor. The third driving component 63 drives the threaded rod 631 to rotate, thereby driving the threaded sleeve 622 to move the carriage 62 along the slide rod 611. Using two slide rods 611 in conjunction with the slide sleeve 621 on the carriage 62 can improve the connection reliability and smoothness of the carriage 62's movement. When baking the heat shrink tubing, it starts from the end furthest from the fixed clamping member 11. At this time, the third driving component 63 drives the carriage 62 to move, causing the clamping end to hold the heat shrink tubing 21 close to the end of the fixed clamping member 11. When the baking assembly 30 moves to a position close to the clamping end, the clamping end releases the heat shrink tubing 21 and moves to the outside of the end of the heat shrink tubing 21 under the drive of the third driving component 63, thereby preventing the clamping end from affecting the baking operation of the baking assembly 30 on the end of the heat shrink tubing 21.

[0043] For example, please see Figure 4 The slide 62 is equipped with a bidirectional cylinder 64. The two output ends of the bidirectional cylinder 64 are respectively connected to arc-shaped grippers 641. The two arc-shaped grippers 641 are arranged opposite each other and together form the clamping end. The bidirectional cylinder 64 refers to a cylinder with cylinder rods extending from both sides of the cylinder barrel, and the cylinder rods on both sides move synchronously. It is a commonly used component in the field of pneumatic actuators. The bidirectional cylinder 64 is used here to drive the two arc-shaped grippers 641 to move synchronously, opening or clamping, thereby balancing the clamping force on both sides of the steel-plastic conversion tube fitting 20, thus ensuring clamping stability.

[0044] For example, please see Figure 4 The slide 62 is equipped with a telescopic cylinder 65, the output end of which faces upward and is connected to an arc-shaped support plate 651, which forms a support end. The telescopic cylinder 65 drives the arc-shaped support plate 651 to rise and fall, thereby supporting and separating the steel-plastic conversion pipe fitting 20. Specifically, to improve work efficiency, during actual operation, while the heat-shrink sleeve 21 fitted on one steel-plastic conversion pipe fitting 20 is being baked and heat-shrinked, the next steel-plastic conversion pipe fitting 20 can be inserted and fixed in the rotating clamp 12 for adhesive application. During this process, the steel-plastic conversion pipe fitting 20 undergoing adhesive application is supported on the arc-shaped support plate 651. If the baking assembly 30 is then moved... When moving to the clamping end of the steel-plastic conversion pipe fitting 20 for baking, the slide 62 needs to be moved so that the clamping end avoids the baking component 30. Since both the clamping end and the support end are connected to the slide 62, directly moving the slide 62 can easily cause the arc-shaped support plate 651 to rub against the steel-plastic conversion pipe fitting 20. Therefore, when sliding, the telescopic cylinder 65 can be retracted first to drive the arc-shaped support plate 651 down, thereby separating the arc-shaped support plate 651 from the steel-plastic conversion pipe fitting 20 and avoiding wear on the paint surface of the steel-plastic conversion pipe fitting 20.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Steel-to-plastic conversion pipe fitting heat-shrink sleeve baking machine, characterized in that, The utility model relates to a steel-plastic conversion pipe baking device, comprising: a machine body, a fixed clamping piece and a rotating clamping piece are arranged at intervals, the fixed clamping piece is used for inserting and fixing a steel-plastic conversion pipe to be baked, and the rotating clamping piece is used for inserting a steel-plastic conversion pipe to be sleeved with a heat-shrinkable sleeve; a baking assembly is slidably connected to the machine body along the axial direction of the steel-plastic conversion pipe to be baked, and the baking assembly has an annular baking hole suitable for sleeving the steel-plastic conversion pipe to be baked; a first driving piece is arranged on the machine body, and the output end of the first driving piece is connected to the baking assembly; a second driving piece is arranged on the machine body, and the output end of the second driving piece is connected to the rotating clamping piece.

2. The steel-to-plastic conversion fitting heat-shrink sleeve oven of claim 1, wherein, The rotating clamping piece comprises: a fixed sleeve fixedly connected to the machine body, an inner peripheral wall of the fixed sleeve is provided with an annular groove, and an end face of the fixed sleeve is provided with an air pipe in communication with the annular groove, the air pipe is used for connecting an air pump; a rotating sleeve, one end of the rotating sleeve is connected to the output end of the second driving piece, the other end of the rotating sleeve is sealingly arranged in the fixed sleeve and rotationally matched with the fixed sleeve, the rotating sleeve has a plurality of air cavities arranged at intervals in the circumferential direction of the rotating sleeve, a plurality of air holes are formed in the outer periphery of the rotating sleeve, each air hole is in communication with each air cavity, and each air hole is aligned with the annular groove along the axial direction of the rotating sleeve; a plurality of arc-shaped clamping plates are arranged at intervals in the interior of the rotating sleeve along the circumferential direction of the rotating sleeve, the center of each arc-shaped clamping plate is provided with a connecting rod extending in the radial direction of the rotating sleeve, each connecting rod is correspondingly inserted into each air cavity and connected to a blocking plate, the blocking plate is slidably connected to the air cavity, and the peripheral wall of the blocking plate sealingly abuts against the cavity wall of the air cavity.

3. The steel-to-plastic conversion fitting heat-shrink sleeve oven of claim 2, wherein, An elastic element is arranged at the position where the connecting rod is inserted into the air cavity, and the elastic element is used for elastically pushing the blocking plate.

4. The steel-to-plastic conversion fitting heat-shrink sleeve oven of claim 2, wherein, One end of the rotating sleeve is connected to an extension sleeve extending towards the second driving piece, the end of the extension sleeve away from the rotating sleeve is closed and connected to a spline sleeve, and the spline sleeve is connected to the output end of the second driving piece.

5. The steel-to-plastic conversion fitting heat-shrink sleeve oven of claim 1, wherein, The machine body is provided with a sliding rail extending along the axial direction of the steel-plastic conversion pipe to be baked, and the baking assembly comprises a sliding seat and an annular oven; the annular oven is connected to the sliding seat and aligned with the fixed clamping piece, the sliding seat is slidably connected to the sliding rail and connected to the output end of the first driving piece.

6. The steel-to-plastic conversion fitting heat-shrink sleeve oven of claim 5, wherein, The first driving piece comprises a driving motor and a transmission screw, the driving motor is fixedly connected to the machine body and connected to the screw at the output end, the screw is rotationally connected to the machine body, and the screw passes through the sliding seat and is threadedly matched with the sliding seat.

7. A steel-to-plastic conversion fitting heat shrink sleeve oven as claimed in any one of claims 1 to 6, wherein, The machine body is further provided with an auxiliary clamp, the auxiliary clamp comprises a clamping end aligned with the fixed clamping piece and a supporting end aligned with the rotating clamping piece; the clamping end is used for clamping the end of the heat-shrinkable sleeve on the steel-plastic conversion pipe to be baked, and the supporting end is used for supporting the steel-plastic conversion pipe to be sleeved with a heat-shrinkable sleeve.

8. The steel-to-plastic conversion fitting heat-shrink sleeve oven of claim 7, wherein, The auxiliary clamp further comprises a base, a sliding frame and a third driving member; the base is arranged on the machine body and is spaced apart with two sliding rods extending along the axial direction of the steel-plastic conversion pipe; the sliding frame is provided with the clamping end and the supporting end, and the bottom of the sliding frame is provided with two sliding sleeves respectively sleeved on the two sliding rods, and a screw sleeve is arranged between the two sliding sleeves; the output end of the third driving member is connected with a threaded rod, the threaded rod penetrates through the screw sleeve and is in threaded cooperation with the screw sleeve.

9. The steel-to-plastic conversion fitting heat shrink sleeve oven of claim 8, wherein, A bidirectional air cylinder is arranged on the sliding frame, and two output ends of the bidirectional air cylinder are respectively connected with arc-shaped clamping jaws, the two arc-shaped clamping jaws are arranged in opposition and jointly form the clamping end.

10. The steel-to-plastic conversion fitting heat-shrink sleeve oven of claim 8, wherein, A telescopic air cylinder is arranged on the sliding frame, the output end of the telescopic air cylinder faces upward and is connected with an arc-shaped supporting plate, and the arc-shaped supporting plate forms the supporting end.

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