A heat transfer printing apparatus for cylindrical workpieces

Abstract

This application discloses a heat transfer printing device for columnar workpieces, belonging to the field of printing equipment. It includes: an unwinding roller, a take-up roller, a pressure block, a pusher, a positioning member, a heat transfer film, and a fixing frame; the pusher is disposed on the fixing frame; the pusher is used to drive the pressure block to move towards or away from the columnar workpiece; the positioning member is disposed on the pressure block; the positioning member forms two positioning portions that contact the heat transfer film on at least two sides of the pressure block, and the positioning portions are located below the pressure block. The beneficial effect is that the positioning portions contact the heat transfer film on both sides of the pressure block, creating a gap between the heat transfer film and the pressure block, preventing direct contact between the heat transfer film and the pressure block, avoiding deformation of the pattern on the heat transfer film, or even partial pattern detachment, resulting in a beautiful and clear pattern when printed onto the surface of the columnar workpiece.

Description

Technical Field

[0001] This application relates to the field of printing equipment, and more specifically, to a heat transfer printing device for cylindrical workpieces. Background Technology

[0002] Heat transfer printing is a device that heats a heat transfer film and prints the pattern on the heat transfer film onto the surface of a columnar workpiece.

[0003] Currently, the printing equipment on the market arranges the heat transfer film by placing unwinding rollers and take-up rollers on both sides of the pressure block. When the heat transfer film passes through the pressure block, the pressure block heats the heat transfer film. At the same time, the pressure block moves towards the columnar workpiece, so that the heat transfer film on the pressure block comes into contact with the outer wall of the columnar workpiece. Meanwhile, the columnar workpiece rolls along the surface of the pressure block, thereby printing the pattern on the heat transfer film onto the surface of the columnar workpiece.

[0004] During the printing process, the rewind roller generates tension during winding, causing the heat transfer film to be in contact with the pressure block for an extended period of time. This can lead to deformation of the pattern on the heat transfer film, or even partial detachment of the pattern. In such cases, the pattern printed onto the surface of the columnar workpiece will appear unattractive or unclear. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section, some embodiments of this application provide a heat transfer printing apparatus for columnar workpieces, comprising: an unwinding roller, a take-up roller, a pressure block, a pusher, a positioning member, a heat transfer film, and a fixed frame; the heat transfer film is wound on the unwinding roller; the unwinding roller and the take-up roller are respectively disposed on both sides of the fixed frame; the pusher is disposed on the fixed frame, and the pressure block is disposed at the output end of the pusher; the pusher is used to drive the pressure block to move towards or away from the columnar workpiece; the positioning member is disposed on the pressure block; the positioning member forms two positioning portions that contact the heat transfer film on at least two sides of the pressure block, the positioning portions being located below the pressure block; the heat transfer film is used to pass through the two positioning portions and be wound on the take-up roller.

[0007] Furthermore, the positioning component includes: a fixing plate, a first pressing rod, and a second pressing rod; the fixing plate is disposed on the pressing block, and the first pressing rod and the second pressing rod both form the positioning part.

[0008] Furthermore, the positioning component also includes: positioning bolts; mounting holes for the first pressure rod and the second pressure rod to pass through at both ends of the fixing plate, and threaded holes for the positioning bolts to pass through; when the positioning bolts are threadedly connected to the threaded holes, the end of the positioning bolts abuts against the outer wall surface of the first pressure rod or the second pressure rod; two positioning bolts are provided.

[0009] Further, the printing equipment includes: a slide table, a slide plate, a first driving member, and a second driving member; the slide plate is slidably connected to the slide table; the first driving member is disposed above the slide plate; the output end of the first driving member forms a clamping portion; the clamping portion is used to clamp a cylindrical workpiece and drive the cylindrical workpiece to rotate; the second driving member is used to push the slide plate to move from a first position to a second position on the slide table; when the slide plate is in the first position, the slide plate is away from the pressure block; during the process of the slide plate moving from the first position to the second position, the first driving member drives the cylindrical workpiece to rotate, and the outer wall surface of the cylindrical workpiece contacts the heat transfer film and rotates along the lower surface of the pressure block.

[0010] Furthermore, the printing equipment also includes: a third driving member and a feeding block; the feeding block is disposed at the output end of the third driving member; the feeding block forms a feeding groove for placing columnar workpieces; when the slide plate is in the first position, the third driving member pushes the feeding block closer to or away from the clamping part; when the third driving member pushes the feeding block closer to the clamping part, the feeding groove coincides with the center line of the clamping part.

[0011] Furthermore, the printing equipment also includes: a vibratory feeder and a conveying channel; the output end of the vibratory feeder is connected to the conveying channel; the end of the conveying channel opposite to the vibratory feeder extends above the feeding trough.

[0012] Furthermore, baffles are formed at both ends of the discharge trough; a portion of the baffles extends toward the centerline of the discharge trough.

[0013] The beneficial effects of this application are as follows:

[0014] The positioning part contacts the heat transfer film on both sides of the pressure block, so that a gap is formed between the heat transfer film and the pressure block to prevent the heat transfer film from directly contacting the pressure block. This avoids the deformation of the pattern on the heat transfer film or even the problem of some patterns falling off, so that when the pattern on the heat transfer film is printed on the surface of the columnar workpiece, the pattern is beautiful and clear. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0017] In the attached diagram:

[0018] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0019] Figure 2 yes Figure 1 The enlarged view of part A mainly shows the structure of the first pressure rod, the second pressure rod, the fixing plate, and some surrounding parts.

[0020] Figure 3 This is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the slide, the slide plate and some surrounding parts;

[0021] Figure 4 This is a structural schematic diagram as part of an embodiment, mainly showing the structure of the clamping part and surrounding parts.

[0022] Figure label:

[0023] 1. Unwinding roller; 2. Rewinding roller; 3. Pressing block; 4. Pushing component; 5. Positioning component; 51. Fixing plate; 52. First pressing rod; 53. Second pressing rod; 531. Positioning part; 54. Positioning bolt; 6. Heat transfer film; 7. Fixing frame; 8. Slide table; 9. Slide plate; 91. Insertion space; 10. First driving component; 101. Clamping part; 11. Second driving component; 12. Third driving component; 13. Feeding block; 131. Feeding trough; 1311. Stop; 14. Vibrating plate; 15. Conveying channel; 16. Columnar workpiece. Detailed Implementation

[0024] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0025] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0026] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0027] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Reference Figure 1-4 ,

[0030] A heat transfer printing device for columnar workpieces includes: an unwinding roller 1, a take-up roller 2, a film pressing block 3, a pusher 4, a positioning member 5, a heat transfer film 6, and a fixed frame 7; the pusher 4 is a cylinder or a hydraulic cylinder, preferably a cylinder in this embodiment. The heat transfer film 6 is wound on the unwinding roller 1; the unwinding roller 1 and the take-up roller 2 are respectively disposed on both sides of the fixed frame 7; the pusher 4 is disposed on the fixed frame 7, and the film pressing block 3 is disposed on the output end of the pusher 4; the pusher 4 is used to drive the film pressing block 3 to move towards or away from the columnar workpiece 16; the positioning member 5 is disposed on the film pressing block 3; the positioning member 5 forms at least two positioning portions 531 on both sides of the film pressing block 3 that contact the heat transfer film 6, the positioning portions 531 being rod-shaped or block-shaped structures, preferably rod-shaped structures in this embodiment. The positioning portions 531 are located below the film pressing block 3; the heat transfer film 6 is wound on the unwinding roller 1, passes through the two positioning portions 531 in sequence, and is wound up by the take-up roller 2. The printing device also includes: a motor. The motor is mounted on the fixed frame 7, and its output end is fixedly connected to the take-up roller 2. When the motor rotates, it drives the take-up roller 2 to rotate, and the take-up roller 2 can wrap the heat transfer film 6 around it. When the pusher 4 pushes the pressure block 3 towards the cylindrical workpiece 16, the positioning member 5 can also move towards the cylindrical workpiece 16. At this time, the heat transfer film 6 will first contact the outer wall surface of the cylindrical workpiece 16, while the pressure block 3 will contact the side of the heat transfer film 6 that is away from the cylindrical workpiece 16, thereby printing the pattern on the heat transfer film 6 onto the outer wall surface of the cylindrical workpiece 16. The positioning part 531 contacts the heat transfer film 6 on both sides of the pressure block 3, so that a gap is formed between the heat transfer film 6 and the pressure block 3 to prevent the heat transfer film 6 from directly contacting the pressure block 3, thereby avoiding the problem of deformation of the pattern on the heat transfer film 6 or even partial pattern falling off, so that when the pattern on the heat transfer film 6 is printed on the surface of the columnar workpiece 16, the pattern is beautiful and clear.

[0031] Specifically, the positioning element 5 includes: a fixing plate 51, a first pressing rod 52, and a second pressing rod 53; the fixing plate 51 is disposed on the pressing block 3, and both the first pressing rod 52 and the second pressing rod 53 form a positioning portion 531. The surfaces of the first pressing rod 52 and the second pressing rod 53 are smooth. In other embodiments, the positioning portion 531 is a plate-like structure.

[0032] Specifically, the positioning component 5 also includes: positioning bolts 54; mounting holes for the first pressure rod 52 and the second pressure rod 53 to pass through at both ends of the fixing plate 51, and threaded holes for the positioning bolts 54 to pass through; when the positioning bolts 54 are threadedly connected to the threaded holes, the end of the positioning bolts 54 abuts against the outer wall surface of the first pressure rod 52 or the second pressure rod 53; two positioning bolts 54 are provided. By adjusting the tightness of the positioning bolts 54, the position and height of the first pressure rod 52 and the second pressure rod 53 can be flexibly adjusted to adjust the size of the gap between the first pressure rod 52 and the second pressure rod 53 and the pressure block 3.

[0033] Specifically, the printing equipment includes: a slide table 8, a slide plate 9, a first drive member 10, and a second drive member 11; the slide plate 9 is slidably connected to the slide table 8; the first drive member 10 is disposed above the slide plate 9; the output end of the first drive member 10 forms a clamping part 101; the clamping part 101 is used to clamp the cylindrical workpiece 16 and drive the cylindrical workpiece 16 to rotate; the first drive member 10 includes a cylinder, a motor, and a rotary bearing. The output end of the cylinder forms the clamping part 101 when it is close to the output end of the motor. The rotary bearing is sleeved on the output end of the cylinder. Straight holes are formed at the center positions of both ends of the cylindrical workpiece 16. The output end of the cylinder forms a protrusion that matches the shape of the straight hole. When the output end of the cylinder pushes the cylindrical workpiece 16 to move towards the output end of the motor, the protrusion is inserted into the straight hole, one end of the cylindrical workpiece 16 abuts against the end face of the rotary bearing, and the other end of the cylindrical workpiece 16 abuts against the output end of the motor. During the rotation of the output end of the motor, the cylindrical workpiece 16 also rotates together with the output end of the motor. The second driving member 11 is used to push the slide plate 9 on the slide table 8 from the first position to the second position; the second driving member 11 is a cylinder or a hydraulic cylinder, and in this embodiment, a cylinder is preferred. When the slide plate 9 is in the first position, the slide plate 9 is away from the pressure block 3, and the worker can place the cylindrical workpiece 16 on the clamping part 101. During the process of the slide plate 9 moving from the first position to the second position, the pushing member 4 will push the pressure block 3 towards the cylindrical workpiece 16, and at the same time, the first driving member 10 will drive the cylindrical workpiece 16 to rotate. The outer wall surface of the cylindrical workpiece 16 will first contact the heat transfer film 6, and the pressure block 3 will contact the side of the heat transfer film 6 that is away from the cylindrical workpiece 16. During the contact with the heat transfer film 6, the cylindrical workpiece 16 will rotate along the lower surface of the pressure block 3, thereby printing the pattern on the heat transfer film 6 onto the outer wall surface of the cylindrical workpiece 16. When the slide plate 9 is in the second position, the cylindrical workpiece 16 has been printed, and the clamping part 101 will release the cylindrical workpiece 16.

[0034] Specifically, the printing equipment also includes a third drive unit 12 and a feeding block 13; the third drive unit 12 is a cylinder. Since the worker manually places the cylindrical workpiece 16 onto the clamping part 101, the clamping part 101 may cause hand damage. Therefore, in this embodiment, a third drive unit 12 and a feeding block 13 are provided. The feeding block 13 is provided at the output end of the third drive unit 12; the feeding block 13 forms a feeding groove 131 for placing the cylindrical workpiece 16; an insertion space 91 is formed on the slide plate 9. The insertion space 91 is located directly below the clamping part 101. When the slide plate 9 is in the first position, the third drive unit 12 is located within the insertion space 91, and the third drive unit 12 pushes the feeding block 13 closer to or away from the clamping part 101; when the third drive unit 12 pushes the feeding block 13 closer to the clamping part 101, the feeding groove 131 coincides with the center line of the clamping part 101, so that the clamping part 101 can clamp the cylindrical workpiece 16 in the feeding groove 131. After the clamping part 101 clamps the cylindrical workpiece 16, the third driving member 12 will drive the unloading block 13 to move away from the clamping part 101 to prevent the second driving member 11 from interfering with the unloading groove 131 when pushing the slide plate 9 from the first position to the first position.

[0035] Specifically, the printing equipment also includes: a vibratory feeder 14 and a conveying channel 15; the output end of the vibratory feeder 14 is connected to the conveying channel 15; the end of the conveying channel 15 away from the vibratory feeder 14 extends above the feeding trough 131. Specifically, a connecting surface is formed on the surface of the feeding block 13 where the feeding trough 131 is formed, and the connecting surface is located at the end of the feeding block 13 near the conveying channel 15. The columnar workpiece 16 conveyed from the conveying channel 15 enters the feeding trough 131 through the connecting surface, and when the third drive member 12 pushes the feeding block 13 closer to or away from the clamping part 101, the conveying track will not interfere with the feeding block 13. When the third drive member 12 moves the feeding block 13 towards the clamping part 101, the columnar workpiece 16 located in the conveying channel 15 and close to the feeding block 13 will contact the outer wall surface of the feeding block 13. Therefore, the columnar workpiece 16 located in the conveying channel 15 will not fall out of the conveying channel 15 due to the movement of the feeding block 13.

[0036] Specifically, baffles 1311 are formed at both ends of the discharge trough 131; part of the baffles 1311 extends towards the centerline of the discharge trough 131. Since the cylindrical workpiece 16 generates a certain inertia when it enters the discharge trough 131 through the conveying channel 15, this inertia can cause the cylindrical workpiece 16 to shift its position in the discharge trough 131, or even cause it to fall to the ground. Therefore, in this embodiment, baffles 1311 are provided to position the cylindrical workpiece 16 and prevent it from falling out of the discharge trough 131. When the clamping part 101 clamps the cylindrical workpiece 16, the clamping part 101 does not contact the baffles 1311; instead, the clamping part 101 directly passes through the baffles 1311 to clamp the cylindrical workpiece 16 in the discharge trough 131.

[0037] Workflow: Workers can place multiple cylindrical workpieces 16 into the vibratory feeder 14. The vibratory feeder 14 will organize the multiple cylindrical workpieces 16 and discharge each cylindrical workpiece 16 from the conveying channel 15 into the discharge trough 131. The second drive unit 11 will drive the slide plate 9 to move to the first position on the slider, while the third drive unit 12 will push the discharge block 13 towards the clamping part 101. The cylindrical workpieces 16 in the discharge trough 131 will also move towards the clamping part 101 as the discharge block 13 moves. Then, the clamping part 101 will clamp the cylindrical workpieces 16 in the discharge trough 131. At this time, the third drive unit... 12 will drive the unloading block 13 to move away from the clamping part 101. Then the second driving member 11 will push the slide plate 9 to move from the first position to the second position on the slide table 8. At the same time, the pushing member 4 will push the pressing block 3 to move towards the columnar workpiece 16. That is, the pushing member 4 will push the pressing block 3 to move towards the clamping part 101. The positioning member 5 will also move towards the clamping part 101. The output end of the first driving member 10 will drive the columnar workpiece 16 to rotate on the clamping part 101. At this time, the heat transfer film 6 will first contact the outer wall surface of the columnar workpiece 16, while the pressing block 3 will contact the side of the heat transfer film 6 away from the columnar workpiece 16. During the process of the second drive member 11 pushing the slide plate 9 to move from the first position to the second position on the slide table 8, the cylindrical workpiece 16 rotating on the clamping part 101 will adhere to the heat transfer film 6 on the lower surface of the pressure block 3, and while rolling, the pattern on the heat transfer film 6 will be printed on the outer wall surface of the cylindrical workpiece 16. When the second drive member 11 pushes the slide plate 9 to the second position, the cylindrical workpiece 16 is printed. Then the clamping part 101 will release the cylindrical workpiece 16, and the cylindrical workpiece 16 will fall out of the insertion space 91.

[0038] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A heat transfer printing device for columnar workpieces, characterized in that, include: Unwinding roller, take-up roller, pressure block, pusher, positioning component, heat transfer film, and fixing frame; The heat transfer film is wound onto the unwinding roller; The unwinding roller and the winding roller are respectively disposed on both sides of the fixed frame; The pushing member is mounted on the fixed frame, and the pressing block is mounted on the output end of the pushing member; the pushing member is used to drive the pressing block to move towards or away from the cylindrical workpiece. The positioning element is disposed on the pressing block; the positioning element forms two positioning portions that contact the heat transfer film on at least two sides of the pressing block, and the positioning portions are located below the pressing block; The heat transfer film is used to pass through the two positioning sections and is wound around the take-up roller.

2. The heat transfer printing equipment for columnar workpieces according to claim 1, characterized in that: The positioning component includes: a fixing plate, a first pressure rod, and a second pressure rod; The fixing plate is disposed on the pressing block, and the first pressing rod and the second pressing rod both form the positioning part.

3. The heat transfer printing equipment for columnar workpieces according to claim 2, characterized in that: The positioning component further includes: positioning bolts; The fixed plate has mounting holes at both ends for the first pressure rod and the second pressure rod to pass through, as well as threaded holes for the positioning bolts to pass through; When the positioning bolt is threaded into the threaded hole, the end of the positioning bolt abuts against the outer wall surface of the first pressure rod or the second pressure rod. Two positioning bolts are provided.

4. The heat transfer printing equipment for columnar workpieces according to claim 3, characterized in that: The printing equipment includes: a slide table, a slide plate, a first drive component, and a second drive component; The sliding plate is slidably connected to the sliding platform; The first driving member is disposed above the slide plate; the output end of the first driving member forms a clamping part; the clamping part is used to clamp the cylindrical workpiece and drive the cylindrical workpiece to rotate; The second driving member is used to push the slide plate to move from a first position to a second position on the slide table; when the slide plate is in the first position, the slide plate moves away from the pressure block; during the process of the slide plate moving from the first position to the second position, the first driving member drives the columnar workpiece to rotate, and the outer wall surface of the columnar workpiece contacts the heat transfer film and rotates along the lower surface of the pressure block.

5. A heat transfer printing device for columnar workpieces according to claim 4, characterized in that: The printing equipment also includes: a third drive unit and a feeding block; The output end of the third driving component is provided with the feeding block; the feeding block forms a feeding groove for placing columnar workpieces; When the slide is in the first position, the third driving member pushes the feeding block closer to or away from the clamping part; when the third driving member pushes the feeding block closer to the clamping part, the feeding groove coincides with the center line of the clamping part.

6. The heat transfer printing equipment for columnar workpieces according to claim 5, characterized in that: The printing equipment also includes: a vibratory feeder and a conveyor channel; The output end of the vibratory feeder is connected to the conveying channel; the end of the conveying channel away from the vibratory feeder extends to the top of the discharge trough.

7. A heat transfer printing device for columnar workpieces according to claim 6, characterized in that: The two ends of the discharge trough form baffles; a portion of the baffles extends toward the centerline of the discharge trough.

Images