Plastic coating device capable of automatically feeding for spring tube production

Abstract

The invention belongs to the technical field of plastic coating, and discloses an automatic feeding plastic coating device for spring tube production, which comprises a plastic coating ring, the two ends of the plastic coating ring are respectively provided with a distribution processing assembly and a sealing assembly, the outer side of the plastic coating ring is sleeved with a cooling assembly, and the two sides of the cooling assembly are fixedly provided with connecting frames. The plastic coating ring is driven by the driving assembly to rotate intermittently, the plastic coating ring is matched with the distribution treatment assembly, three sets of plastic coating cavities are communicated with three treatment openings in the distribution treatment assembly, and the three procedures of automatic feeding, plastic coating injection and automatic extrusion and discharge are completed at the same time; the spring tubes in the single group of plastic coating cavities are subjected to different treatment procedures when rotating intermittently in sequence, all the procedures are carried out at the same time, the effect of automatic feeding is matched, plastic coating synchronous treatment is achieved, the actual plastic coating efficiency is greatly improved, the plastic coating production efficiency is greatly improved for batch spring tubes, and the use effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic coating, and in particular relates to a plastic coating device capable of automatically loading materials for producing spring tubes. Background Art

[0002] The plastic coating device for spring tube production is a plastic coating device specially used for producing spring tubes. For the plastic coating of spring tubes, the metal tube body of the spring tube is usually moved into the plastic coating chamber, and the molten plastic is filled and coated to achieve the plastic coating process and produce the plastic coated spring tube.

[0003] The conventional overmolding device for spring tube production generally adopts a loading mechanism during use to carry the metal spring tube raw materials for overmolding one by one into the overmolding cavity, and cooperates with the subsequent overmolding process to complete the overmolding process. However, the current loading, injection and discharge need to be implemented one by one, and only a single process can be completed at the same time. For batch spring tubes, the actual overmolding efficiency is low. In addition, during the overmolding process, the molded overmolded shell adheres to the inner wall of the overmolding cavity after curing, especially the central cavity of the inner wall of the overmolded spring tube, which is excessively bonded to the matching internal center rod during molding, making it difficult to separate the parts after molding. The combined problems of low overmolding efficiency and difficulty in separation result in poor use effect. Summary of the Invention

[0004] The object of the present invention is to provide a plastic coating device capable of automatically loading materials for the production of spring tubes, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic-coating device with automatic feeding for spring tube production, comprising a plastic-coating ring, wherein both ends of the plastic-coating ring are respectively provided with a distribution processing component and a closing component, a cooling component is sleeved on the outer side of the plastic-coating ring, and connecting frames are fixedly provided on both sides of the cooling component, and the cooling components respectively realize the connection between the distribution processing component and the closing component through the connecting frames, the front of the distribution processing component is fixedly connected to a feeding box, and a pusher component 1 is fixedly provided on the left side of the feeding box, a driving component is provided in the central area of ​​the plastic-coating ring, and the driving component is fixed on the closing component and drives the plastic-coating ring to rotate intermittently, and a pusher component 2 is provided on one side of the driving component, a plastic-coating cavity is opened inside the plastic-coating ring, and a composite processing component is provided inside the plastic-coating cavity,

[0006] The composite processing assembly includes a center rod, a push ring, a bearing, a gear 1, a spring, a gear 2 and a servo motor. The center rod is rotatably installed in the overmolding cavity. The push ring is movably sleeved on the center rod and fixedly connected to the spring. The other end of the spring is fixed in the overmolding cavity.

[0007] Preferably, the distribution processing component includes a processing ring, a feed hole, a liquid cavity and a de-emission hole. The feed hole, the liquid cavity and the de-emission hole are evenly spaced on the processing ring. The feed hole and the de-emission hole are the same size and the same as the inner diameter of the overmolding cavity. The liquid cavity passes through the outer side surface of the processing ring and is connected to the external injection mechanism.

[0008] Preferably, the number of the overmolding cavities is three, and they are distributed in the overmolding ring at equal intervals. A through material guide hole is provided at the end of the loading box. The inner diameter of the material guide hole is the same as the inner diameter of the overmolding cavity, and the material guide hole is aligned and connected with the feed hole.

[0009] Preferably, the pushing assembly includes a screw mechanism, a sleeve and a push rod. The screw mechanism is fixed on the left end face of the loading box. The sleeve is threadedly sleeved on the screw of the screw mechanism. The sleeve is fixedly connected to the push rod. One end of the push rod is movably sleeved in the material guide hole.

[0010] Preferably, the interior of the overmolded ring is respectively provided with an assembly cavity and a communicating port, the communicating port is communicated with the overmolded cavity, the communicating port is located on the right end face of the overmolded ring, the bearing, gear one and gear two are all located in the assembly cavity, the bearing and gear one are all sleeved on the outer surface of the center rod, the servo motor is nested and installed on the inner wall of the overmolded ring, the output shaft of the servo motor is fixedly sleeved with gear two, the gear two is meshed with gear one, the center rod is rotatably installed in the overmolded ring through a bearing, a limit rod is fixedly connected in the overmolded cavity, and the limit rod limits the position of the push ring.

[0011] Preferably, the closing assembly includes a closing ring and an adapter port, the closing ring and the bottom of the loading box are both provided with support legs, the adapter port is opened on the closing ring and is located on the rotation path of the connecting port, and the adapter port is aligned with the outlet hole.

[0012] Preferably, the driving assembly includes a support plate, a power motor, a rotating shaft and an intermediate plate, the support plate is fixed on the outer end face of the closed assembly, the power motor is installed on the support plate, the output shaft of the power motor is fixedly connected to the rotating shaft, the intermediate plate is fixedly sleeved on the rotating shaft, and the intermediate plate is fixedly connected to the inner wall of the plastic-coated ring.

[0013] Preferably, the push rod assembly 2 includes an electric push rod, a push rod 2 and a connecting block. The electric push rod is fixed on the support plate, the movable end of the electric push rod is fixedly connected to the connecting block, the connecting block is fixedly connected to the push rod 2, and one end of the push rod 2 is movably sleeved in the adapter.

[0014] Preferably, the cooling assembly includes an input frame, an outlet ring, an arc-shaped connecting plate, an internal cavity and a water outlet. The outlet ring and the input frame are respectively located at the bottom and the top of the plastic-coated ring. The arc-shaped connecting plate is fixedly connected between the input frame and the outlet ring. The internal cavity is opened inside the input frame. The water outlet is opened at the bottom of the input frame and is connected to the internal cavity. The top of the input frame is connected to an external liquid supply mechanism.

[0015] Preferably, an outer opening is provided on the outer side of the plastic-coating ring, and a cooling cavity is provided inside the plastic-coating ring. The number of the cooling cavities is the same as that of the outer openings and they correspond one to one. The outer openings and the plastic-coating cavities are alternately distributed. The outer openings are connected to the cooling cavity and are eccentrically located on the outside of the cooling cavity.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention utilizes a pusher assembly, a loading box, a distribution processing assembly, and a plastic-coating ring to achieve intermittent conduction between the plastic-coating cavity and the feed hole in the distribution processing assembly during the rotation of the plastic-coating ring. During the conduction stagnation period, the pusher assembly and the loading box are used to automatically push and load the spring tube to be plastic-coated. For the plastic-coating processing of batch spring tubes, fast and accurate automatic loading processing is achieved. When the spring tube is inserted into the plastic-coating cavity, plastic-coating molding is completed when molten plastic is injected, and the use effect is good.

[0018] 2. The present invention utilizes a driving component to drive the plastic-coating ring to rotate intermittently, utilizes the cooperation between the plastic-coating ring and the distribution processing component, utilizes three groups of plastic-coating cavities to connect with the three processing ports in the distribution processing component, and simultaneously completes the three processes of automatic loading, plastic-coating injection and automatic extrusion. The spring tubes in a single group of plastic-coating cavities complete different processing processes while rotating intermittently in sequence, and various processes are carried out simultaneously, with the effect of automatic loading, to achieve synchronous plastic-coating processing, greatly improving the actual plastic-coating efficiency. For batch spring tubes, the plastic-coating production efficiency is greatly improved, and the use effect is good.

[0019] 3. The present invention utilizes a composite processing component provided in the overmolding cavity, and can realize the rotation of the center rod inside the inserted spring tube during the entire process of overmolding loading, injection and discharge. On the one hand, it realizes the internal support of the spring tube, avoids local deformation, and improves the overmolding quality of the spring tube. On the other hand, during the overmolding period after injection, especially during the cooling and solidification time, the dynamically rotating center rod reduces adhesion with the solidified plastic through dynamic disturbance, which facilitates the separation of the center rod from the overmolded spring tube after molding, avoids the discharge problem after adhesion, maintains the hollow state of the middle part of the overmolded spring tube, and improves the final separation effect of the spring tube after overmolding.

[0020] 4. The present invention uses a cooling component on the outside of the plastic-coated ring, which cooperates with the outer side surface of the plastic-coated ring and the eccentrically arranged outer port of the cooling chamber. After the molten plastic is injected into the plastic-coated chamber, cooling water is introduced into the cooling chamber. Under slow rotation, static heat exchange of the cooling water is performed during the rotation time of the injection into the discharge interval. After pushing the discharge, the cooling water is automatically discharged downward with the rotation of the plastic-coated ring. During the cooling process, the injection timing of the cooling water is accurately matched, and the cooling water is kept stationary for a certain period of time to fully carry out the heat exchange treatment of the cooling water, thereby avoiding the energy consumption problem under the continuous input of cooling water operation and realizing energy-saving cooling. While having effective cooling, the water flow heat exchange time is maintained, the total amount of heat exchange is provided, and the consumption of water resources is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0023] Figure 3 It is a cross-sectional schematic diagram of the loading box of the present invention;

[0024] Figure 4 Schematic diagram of the pusher assembly 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection between the cooling component, the distribution processing component and the sealing component of the present invention;

[0026] Figure 6 is a cross-sectional schematic diagram of an input frame of the present invention;

[0027] Figure 7 This is an exploded schematic diagram of the input distribution component and the overmolding ring of the present invention;

[0028] Figure 8 Schematic cross-sectional view of the plastic-coated ring and composite processing assembly of the present invention;

[0029] Figure 9 for Figure 8 A schematic diagram of the structure at center A;

[0030] Figure 10 is a schematic diagram of the composite processing assembly of the present invention;

[0031] Figure 11 A schematic diagram of the distribution processing components of the present invention;

[0032] Figure 12 Schematic cross-sectional view of the plastic-coated ring of the present invention;

[0033] Figure 13 It is a partial cross-sectional view of the plastic-coated ring of the present invention;

[0034] Figure 14 This is a schematic diagram of the driving and pushing component 2 of the present invention.

[0035] In the figure: 1. Plastic-coated ring; 2. Loading box; 3. Pushing assembly 1; 31. Screw mechanism; 32. Sleeve plate; 33. Push rod 1; 4. Distribution and processing assembly; 41. Processing ring; 42. Feed hole; 43. Liquid passage cavity; 44. Lead-out hole; 5. Closing assembly; 51. Closing ring; 52. Adapter; 6. Cooling assembly; 61. Input box; 62. Lead-out ring; 63. Arc connecting plate; 64. Internal cavity; 65. Water outlet; 7. Connecting frame; 8. Drive assembly; 81. Support plate. 82. Power motor; 83. Rotating shaft; 84. Middle plate; 9. Pushing assembly 2; 91. Electric push rod; 92. Push rod 2; 93. Connecting block; 10. Plastic-coated cavity; 11. Assembly cavity; 12. Connecting port; 13. Outer port; 14. Cooling cavity; 15. Composite processing assembly; 151. Center rod; 152. Push ring; 153. Bearing; 154. Gear 1; 155. Spring; 156. Gear 2; 157. Servo motor; 16. Guide hole; 17. Limit rod. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] like Figures 1 to 14 As shown, the embodiment of the present invention provides a plastic coating device with automatic feeding for spring tube production, including a plastic coating ring 1, a distribution processing component 4 and a closing component 5 are respectively provided at both ends of the plastic coating ring 1, a cooling component 6 is provided on the outer side of the plastic coating ring 1, and a connecting frame 7 is fixedly provided on both sides of the cooling component 6. The cooling component 6 realizes the connection between the distribution processing component 4 and the closing component 5 through the connecting frame 7, the front of the distribution processing component 4 is fixedly connected to the feeding box 2, and the left side of the feeding box 2 is fixedly provided with a pushing component 3, and the central area of ​​the plastic coating ring 1 is provided with a driving component 8, which is fixed to the closing component 6. Part 5, and drives the plastic-coated ring 1 to rotate intermittently. A pushing component 2 9 is provided on one side of the driving component 8. A plastic-coated cavity 10 is opened inside the plastic-coated ring 1. A composite processing component 15 is provided inside the plastic-coated cavity 10. The composite processing component 15 includes a center rod 151, a pushing ring 152, a bearing 153, a gear 154, a spring 155, a gear 2 156 and a servo motor 157. The center rod 151 is rotatably installed in the plastic-coated cavity 10, and the pushing ring 152 is movably sleeved on the center rod 151 and fixedly connected to the spring 155. The other end of the spring 155 is fixed in the plastic-coated cavity 10.

[0038] Example 1: When in use, the spring tube to be coated is put into the loading box 2, and the spring tube in the loading box 2 automatically falls to the bottom of the inner cavity. When the coating begins, the screw mechanism 31 in the pushing component 3 is started, the control sleeve 32 moves, and drives the push rod 33 to be inserted along the guide hole 16, and the spring tube in the loading box 2 is pushed into the coating cavity 10 at the bottom of the coating ring 1 along the feed hole 42 of the distribution processing component 4, and the spring tube pushed into the coating cavity 10 is sleeved on the outside of the center rod 151 in the coating cavity 10. As the automatic loading is completed, the driving assembly is turned on. Component 8 is started, and the power motor 82 drives the rotating shaft 83 to rotate a certain angle, and drives the plastic-wrapped ring 1 to rotate 120 degrees through the intermediate plate 84, so that the plastic-wrapped cavity 10 with the spring tube on the plastic-wrapped ring 1 rotates upward and communicates with the liquid-passing cavity 43. The external injection mechanism injects the molten plastic into the interior of the plastic-wrapped cavity 10 through the liquid-passing cavity 43. At the same time, the servo motor 157 in the composite processing component 15 is started, and the servo motor 157 drives the gear 2 156 to rotate, and makes the meshing gear 1 154 rotate, thereby driving the center rod 151 to rotate, keeping the center rod 151 The spring tube rotates inside, and after the injection is completed, the driving component 8 controls the plastic-wrapped ring 1 to rotate again, and the plastic-wrapped cavity 10 injected with the molten plastic gradually rotates upward to the top, and drives the outer port 13 on the outside of the plastic-wrapped ring 1 to rotate, and the cooling water injected into the cooling component 6 is introduced into the outer port 13 along the water outlet 65, and quickly fills the cooling cavity 14. The molten plastic in the plastic-wrapped cavity 10 exchanges heat with the cooling water in the cooling cavity 14, and the molten plastic in the plastic-wrapped cavity 10 is quickly cooled and solidified, and the center rod 151 is kept rotating. When the plastic-wrapped cavity 10 is in the state of being heated, the cooling water in the cooling cavity 14 is heated. When it rotates to be aligned with the outlet hole 44, it stops and the push assembly 2 9 is started. The electric push rod 91 drives the push rod 2 92 to move. The push rod 2 92 is inserted into the connecting port 12 along the adapter port 52, and the push ring 152 moves along the center rod 151. While stretching the spring 155, the plastic-coated and solidified plastic-coated spring tube is pushed to move outward along the plastic-coating cavity 10 and be discharged along the aligned outlet hole 44, completing the plastic coating after automatic loading and the rotational discharge after plastic coating. When the outer port 13 rotates to the bottom, the cooling water after internal heat exchange flows into the outlet ring 62 and is automatically discharged.

[0039] First, by utilizing the pushing component 3, the loading box 2, the distribution processing component 4 and the overmolding ring 1, intermittent conduction between the overmolding cavity 10 and the feed hole 42 in the distribution processing component 4 is achieved during the rotation of the overmolding ring 1, and during the conduction stagnation period, the pushing component 3 and the loading box 2 are cooperated to automatically push and load the spring tube to be overmolded. For the overmolding processing of batch spring tubes, fast and accurate automatic loading processing is achieved, and the spring tube inserted into the overmolding cavity 10 is cooperated to complete the overmolding molding when the molten plastic is injected, and the use effect is good.

[0040] In addition, by utilizing the driving component 8 to drive the overmolding ring 1 to rotate intermittently, utilizing the cooperation between the overmolding ring 1 and the distribution processing component 4, utilizing the three groups of overmolding cavities 10 to be connected with the three processing ports in the distribution processing component 4, the three processes of automatic loading, overmolding injection and automatic extrusion are completed at the same time. The spring tube in a single group of overmolding cavities 10 completes different processing processes while rotating intermittently in sequence, and various processes are carried out simultaneously, cooperating with the effect of automatic loading to achieve synchronous overmolding processing, thereby greatly improving the actual overmolding efficiency. For batch spring tubes, the overmolding production efficiency is greatly improved, and the use effect is good.

[0041] On the other hand, by utilizing the composite processing component 15 provided in the overmolding cavity 10, the center rod 151 can be rotated inside the inserted spring tube during the entire process of overmolding loading, injection and discharging. On the one hand, internal support of the spring tube is achieved, local deformation is avoided, and the overmolding quality of the spring tube is improved. On the other hand, during the overmolding period after injection, especially during the cooling and solidification time, the dynamically rotating center rod 151 reduces adhesion with the solidified plastic through dynamic disturbance, which facilitates the separation of the center rod 151 from the overmolded spring tube after molding, avoids the discharging problem after adhesion, maintains the hollow state of the middle part of the overmolded spring tube, and improves the final separation effect of the spring tube after overmolding.

[0042] On the other hand, by means of the cooling assembly 6 on the outside of the overmolding ring 1, and the outer side opening 13 eccentrically arranged between the outer side surface of the overmolding ring 1 and the cooling cavity 14, after the molten plastic is injected into the overmolding cavity 10, cooling water is introduced into the cooling cavity 14, and static heat exchange is performed during the rotation time of the injection into the discharge interval under slow rotation, and after pushing the discharge, the cooling water is automatically drained downward with the rotation of the overmolding ring 1. During the cooling process, the injection timing of the cooling water is accurately matched, and the cooling water is kept stationary for a certain period of time to fully carry out the heat exchange treatment of the cooling water, thereby avoiding the energy consumption problem under the continuous input of cooling water operation, realizing energy-saving cooling, maintaining the water flow heat exchange time while having effective cooling, providing the total amount of heat exchange, and reducing the consumption of water resources.

[0043] Among them, the distribution processing component 4 includes a processing ring 41, a feed hole 42, a liquid cavity 43 and a de-emission hole 44. The feed hole 42, the liquid cavity 43 and the de-emission hole 44 are evenly spaced on the processing ring 41. The feed hole 42 and the de-emission hole 44 are the same size and the same as the inner diameter of the overmolding cavity 10. The liquid cavity 43 passes through the outer side of the processing ring 41 and is connected to the external injection mechanism. The number of overmolding cavities 10 is three, and they are distributed in the overmolding ring 1 at equal intervals in a ring shape. A through material guide hole 16 is opened at the end of the loading box 2. The inner diameter of the material guide hole 16 is the same as the inner diameter of the overmolding cavity 10. The material guide hole 16 is aligned and connected with the feed hole 42.

[0044] The three overmolding cavities 10 correspond to the feed hole 42, the liquid passage cavity 43 and the outlet hole 44 in the distribution processing component 4, ensuring that the three processes are completed simultaneously, and ensuring that a single overmolding cavity 10 completes all the overmolding processes in sequence during the rotation process, thereby improving processing efficiency.

[0045] Among them, the pushing assembly 3 includes a screw mechanism 31, a sleeve 32 and a push rod 33. The screw mechanism 31 is fixed to the left end face of the loading box 2, the sleeve 32 is threadedly sleeved on the screw of the screw mechanism 31, the sleeve 32 is fixedly connected to the push rod 33, and one end of the push rod 33 is movably sleeved in the material guide hole 16.

[0046] By utilizing the pushing assembly 3, the movement control of the push rod 33 is realized, the bottom spring tube in the loading box 2 is pushed and loaded, and automatic loading processing is realized.

[0047] Among them, the interior of the plastic-coated ring 1 is respectively provided with an assembly cavity 11 and a connecting port 12, the connecting port 12 is connected to the plastic-coated cavity 10, and the connecting port 12 is located on the right end face of the plastic-coated ring 1. The bearing 153, gear 1 154 and gear 2 156 are all located in the assembly cavity 11, and the bearing 153 and gear 1 154 are all sleeved on the outer surface of the center rod 151. The servo motor 157 is nested and installed on the inner wall of the plastic-coated ring 1. The output shaft of the servo motor 157 is fixedly sleeved with gear 2 156, and gear 2 156 is meshed with gear 1 154. The center rod 151 is rotatably installed in the plastic-coated ring 1 through a bearing, and a limit rod 17 is fixedly connected in the plastic-coated cavity 10. The limit rod 17 limits the position of the push ring 152.

[0048] The assembly cavity 11 realizes the installation processing of the bearing 153 and the gear 1 154. The connecting port 12 adapts to the insertion of the push rod 2 92 in the push assembly 2 9, and cooperates with the extrusion and pushing of the push ring 152 to realize the discharge of the plastic-coated spring tube after molding. The spring 155 stores elastic potential energy and facilitates elastic reset. The limit rod 17 limits the position of the push ring 152 to ensure that the filling amount of the plastic-coated cavity 10 will not be expanded when the molten plastic is injected, and to ensure that the length of the inserted spring tube is consistent with the length of the final plastic-coated shell.

[0049] Among them, the closing component 5 includes a closing ring 51 and an adapter 52. The closing ring 51 and the bottom of the loading box 2 are both provided with support legs. The adapter 52 is opened on the closing ring 51 and is located on the rotation path of the connecting port 12. The adapter 52 is aligned with the outlet hole 44. The pushing component 2 9 includes an electric push rod 91, a push rod 2 92 and a connecting block 93. The electric push rod 91 is fixed on the support plate 81. The movable end of the electric push rod 91 is fixedly connected to the connecting block 93. The connecting block 93 is fixedly connected to the push rod 2 92. One end of the push rod 2 92 is movably sleeved in the adapter 52.

[0050] The closing component 5 realizes the closure of the right end of the plastic-coated ring 1, and together with the distribution processing component 4 supports and limits the rotation position of the plastic-coated ring 1, and cooperates with the support legs to maintain stability, while providing the installation position of the drive component 8. The adapter 52 is aligned with the outlet hole 44. After the push rod 92 is sleeved, it is guided into the plastic-coated cavity 10 and pushes the molded plastic-coated spring tube to be discharged.

[0051] Among them, the driving component 8 includes a support plate 81, a power motor 82, a rotating shaft 83 and an intermediate plate 84. The support plate 81 is fixed on the outer end face of the closing component 5, the power motor 82 is installed on the support plate 81, the output shaft of the power motor 82 is fixedly connected to the rotating shaft 83, the intermediate plate 84 is fixedly sleeved on the rotating shaft 83, and the intermediate plate 84 is fixedly connected to the inner wall of the plastic-coated ring 1.

[0052] The driving assembly 8 provides a rotational force to control the intermittent and equidistant rotation of the overmolding ring 1 and complete the synchronous overmolding process in the process of sequential rotation.

[0053] Among them, the cooling component 6 includes an input frame 61, an outlet ring 62, an arc-shaped connecting plate 63, an internal cavity 64 and a water outlet 65. The outlet ring 62 and the input frame 61 are respectively located at the bottom and the top of the plastic-coated ring 1. The arc-shaped connecting plate 63 is fixedly connected between the input frame 61 and the outlet ring 62. The internal cavity 64 is opened inside the input frame 61. The water outlet 65 is opened at the bottom of the input frame 61 and is connected to the internal cavity 64. The top of the input frame 61 is connected to an external liquid supply mechanism. The outer side surface of the plastic-coated ring 1 is provided with an outer port 13, and the interior of the plastic-coated ring 1 is provided with a cooling cavity 14. The number of cooling cavities 14 and the outer ports 13 are the same and correspond one to one. The outer ports 13 and the plastic-coated cavities 10 are alternately distributed. The outer port 13 is connected to the cooling cavity 14 and is eccentrically located outside the cooling cavity 14.

[0054] The cooling assembly 6 realizes the cooling treatment of the molten plastic injected into the plastic-coating ring 1, ensuring the completion of rapid cooling treatment during the rotation process, and cooperates with the arrangement of the outer port 13 and the cooling cavity 14 to realize automatic filling of the coolant, static cooling of the coolant and automatic discharge of the coolant during the rotation process, thereby realizing effective and stable automatic cooling treatment.

[0055] The working principle and use process of the present invention are as follows: when in use, the spring tube to be coated is put into the feeding box 2, and the spring tube in the feeding box 2 automatically falls to the bottom of the inner cavity. When the coating starts, the screw mechanism 31 in the pushing component 3 is started, the control sleeve 32 moves, and drives the push rod 33 to be inserted along the guide hole 16, and the spring tube in the feeding box 2 is pushed along the feed hole 42 of the distribution processing component 4 into the coating cavity 10 at the bottom of the coating ring 1, and the spring tube pushed into the coating cavity 10 is sleeved on the outside of the center rod 151 in the coating cavity 10. After the material is finished, the driving assembly 8 is started, the power motor 82 drives the rotating shaft 83 to rotate a certain angle, and drives the plastic-wrapped ring 1 to rotate 120 degrees through the intermediate plate 84, so that the plastic-wrapped cavity 10 with the spring tube on the plastic-wrapped ring 1 rotates upward and communicates with the liquid-passing cavity 43. The external injection mechanism injects the molten plastic into the interior of the plastic-wrapped cavity 10 through the liquid-passing cavity 43. At the same time, the servo motor 157 in the composite processing assembly 15 is started, and the servo motor 157 drives the gear 2 156 to rotate, and makes the meshing gear 1 154 rotate, thereby driving the center rod 151 to rotate, keeping the center The rod 151 rotates inside the spring tube, and after the injection is completed, the driving component 8 controls the overmolding ring 1 to rotate again, and the overmolding cavity 10 injected with the molten plastic gradually rotates upward to the top, and drives the outer port 13 outside the overmolding ring 1 to rotate, and the cooling water injected into the cooling component 6 is introduced into the rotating outer port 13 along the water outlet 65, and quickly fills the cooling cavity 14. The molten plastic in the overmolding cavity 10 exchanges heat with the cooling water in the cooling cavity 14, and the molten plastic in the overmolding cavity 10 quickly cools and solidifies, and the center rod 151 is kept rotating. When the overmolding cavity is 10 stops when it rotates to be aligned with the outlet hole 44, and the pushing component 2 9 is started. The electric push rod 91 drives the push rod 2 92 to move. The push rod 2 92 is inserted into the connecting port 12 along the adapter port 52, and the pushing ring 152 moves along the center rod 151. While stretching the spring 155, the plastic-coated and solidified plastic-coated spring tube is pushed to move outward along the plastic-coating cavity 10 and be discharged along the aligned outlet hole 44, completing the plastic coating after automatic loading and the rotational discharge after plastic coating. When the outer port 13 rotates to the bottom, the cooling water after internal heat exchange flows into the outlet ring 62 and is automatically discharged.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A plastic coating device capable of automatically loading materials for producing spring tubes, comprising a plastic coating ring (1), characterized in that: The two ends of the plastic-wrapped ring (1) are respectively provided with a distribution processing component (4) and a closing component (5); the outer side of the plastic-wrapped ring (1) is provided with a cooling component (6); both sides of the cooling component (6) are fixedly provided with a connecting frame (7); the cooling component (6) realizes the connection between the distribution processing component (4) and the closing component (5) through the connecting frame (7); the front of the distribution processing component (4) is fixedly connected with a loading box (2); the left side of the loading box (2) is fixedly provided with a pusher component (3); the central area of ​​the plastic-wrapped ring (1) is provided with a driving component (8); the driving component (8) is fixed on the closing component (5) and drives the plastic-wrapped ring (1) to rotate intermittently; a pusher component (9) is provided on one side of the driving component (8); a plastic-wrapped cavity (10) is provided inside the plastic-wrapped ring (1); a composite processing component (15) is provided inside the plastic-wrapped cavity (10); The composite processing assembly (15) includes a center rod (151), a push ring (152), a bearing (153), a gear 1 (154), a spring (155), a gear 2 (156) and a servo motor (157). The center rod (151) is rotatably installed in the overmolding cavity (10). The push ring (152) is movably sleeved on the center rod (151) and fixedly connected to the spring (155). The other end of the spring (155) is fixed in the overmolding cavity (10).

2. The automatic feeding plastic coating device for spring tube production according to claim 1, characterized in that: The distribution processing assembly (4) comprises a processing ring (41), a feed hole (42), a liquid passage cavity (43) and a derivation hole (44); the feed hole (42), the liquid passage cavity (43) and the derivation hole (44) are distributed on the processing ring (41) at equal intervals; the feed hole (42) and the derivation hole (44) have the same size and the same inner diameter as the overmolding cavity (10); the liquid passage cavity (43) passes through the outer side surface of the processing ring (41) and is connected to an external injection mechanism.

3. The automatic feeding plastic coating device for spring tube production according to claim 2, characterized in that: The number of the plastic-wrapped cavities (10) is three, and they are distributed in an annular manner with equal spacing in the plastic-wrapped ring (1). A through material guide hole (16) is provided at the end of the loading box (2). The inner diameter of the material guide hole (16) is the same as the inner diameter of the plastic-wrapped cavity (10), and the material guide hole (16) is aligned and connected with the feed hole (42).

4. The automatic feeding plastic coating device for spring tube production according to claim 3, characterized in that: The pusher assembly (3) includes a screw mechanism (31), a sleeve (32) and a push rod (33). The screw mechanism (31) is fixed to the left end face of the loading box (2). The sleeve (32) is threadedly sleeved on the screw of the screw mechanism (31). The sleeve (32) is fixedly connected to the push rod (33). One end of the push rod (33) is movably sleeved in the material guide hole (16).

5. The automatic feeding plastic coating device for spring tube production according to claim 1, characterized in that: The interior of the plastic-wrapped ring (1) is provided with an assembly cavity (11) and a communication port (12), the communication port (12) being communicated with the plastic-wrapped cavity (10), the communication port (12) being located on the right end face of the plastic-wrapped ring (1), the bearing (153), gear 1 (154) and gear 2 (156) being all located in the assembly cavity (11), the bearing (153) and gear 1 (154) being all sleeved on the outer surface of the center rod (151), the servo motor (157) being nested and mounted on the inner wall of the plastic-wrapped ring (1), the output shaft of the servo motor (157) being fixedly sleeved with gear 2 (156), the gear 2 (156) being meshedly connected with gear 1 (154), the center rod (151) being rotatably mounted in the plastic-wrapped ring (1) through a bearing, the plastic-wrapped cavity (10) being fixedly connected with a limit rod (17), the limit rod (17) limiting the position of the push ring (152).

6. The automatic feeding plastic coating device for spring tube production according to claim 2, characterized in that: The closing assembly (5) comprises a closing ring (51) and an adapter (52). The closing ring (51) and the bottom of the loading box (2) are both provided with support legs. The adapter (52) is provided on the closing ring (51) and is located on the rotation path of the connecting port (12). The adapter (52) is aligned with the outlet hole (44).

7. The automatic feeding plastic coating device for spring tube production according to claim 6, characterized in that: The driving assembly (8) comprises a support plate (81), a power motor (82), a rotating shaft (83) and an intermediate plate (84); the support plate (81) is fixed on the outer end surface of the closing assembly (5); the power motor (82) is mounted on the support plate (81); the output shaft of the power motor (82) is fixedly connected to the rotating shaft (83); the intermediate plate (84) is fixedly sleeved on the rotating shaft (83); and the intermediate plate (84) is fixedly connected to the inner wall of the plastic-coated ring (1).

8. The automatic plastic-coating device for producing spring tubes according to claim 7, characterized in that: The push rod assembly 2 (9) includes an electric push rod (91), a push rod 2 (92) and a connecting block (93). The electric push rod (91) is fixed on the support plate (81). The movable end of the electric push rod (91) is fixedly connected to the connecting block (93). The connecting block (93) is fixedly connected to the push rod 2 (92). One end of the push rod 2 (92) is movably sleeved in the adapter (52).

9. The automatic feeding plastic coating device for spring tube production according to claim 1, characterized in that: The cooling assembly (6) comprises an input frame (61), an outlet ring (62), an arc-shaped connecting plate (63), an internal cavity (64) and a water outlet (65); the outlet ring (62) and the input frame (61) are respectively located at the bottom and the top of the plastic-coated ring (1); the arc-shaped connecting plate (63) is fixedly connected between the input frame (61) and the outlet ring (62); the internal cavity (64) is opened inside the input frame (61); the water outlet (65) is opened at the bottom of the input frame (61) and is communicated with the internal cavity (64); and the top of the input frame (61) is externally connected to an external liquid supply mechanism.

10. The automatic loading plastic coating device for spring tube production according to claim 9, characterized in that: The outer side surface of the plastic-wrapped ring (1) is provided with an outer opening (13), and the interior of the plastic-wrapped ring (1) is provided with a cooling cavity (14). The number of the cooling cavities (14) and the outer openings (13) is the same and they correspond one to one. The outer openings (13) and the plastic-wrapped cavities (10) are alternately distributed. The outer openings (13) are connected to the cooling cavity (14) and are eccentrically located outside the cooling cavity (14).

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