A screen printing machine for special-shaped containers

Abstract

The present application relates to the field of screen printing equipment, and in particular to a screen printing machine for special-shaped containers, comprising a frame, a positioning assembly, and a transfer assembly; both the positioning assembly and the transfer assembly are disposed on the frame; the positioning assembly comprises a positioning cylinder seat, a floating cone block, a floating elastic member, and a positioning rod; the positioning cylinder seat has a sliding chamber defined within it, the floating cone block slides in the sliding chamber, and the floating cone block has a clearance fit within the inner wall of the sliding chamber; the floating elastic member is mounted on either side of the positioning cylinder seat and the floating cone block, respectively, and the positioning rod is mounted on the floating cone block; the positioning cylinder seat is mounted with a floating ring, the floating ring having a floating cone hole extending therethrough, the floating cone hole being connected to the sliding chamber, and the floating cone block being plugged into the floating cone hole; the transfer assembly is used to move the mouth of the container toward the positioning rod. The present application has the effect of preventing the positioning rod from pressing against the bottle mouth, causing damage, during the screen printing process.

Description

Technical Field

[0001] The present application relates to the field of screen printing equipment, and in particular to a screen printing machine for special-shaped containers. Background Art

[0002] Silk screen printing is a common printing process in modern industry, typically accomplished using a screen and a squeegee. The screen is configured with perforated and non-perforated areas, with the perforated areas shaped to match the desired pattern. This allows the perforated and non-perforated areas to be covered on the surface, creating a pattern identical to the perforated areas.

[0003] When performing screen printing, the bottom of the screen needs to be laid on the surface of the fixed object, then the paint is placed on the top of the screen, and finally the paint on the top of the screen is scraped back and forth with a scraper, so that the paint passes through the perforated area of the screen and prints the pattern on the surface of the object.

[0004] In existing related technology, equipment used for screen printing can be found in the invention patent CN 118061665 A, which discloses a multi-module cold foiling machine comprising a plurality of screen printing mechanisms, a screen printing gluing mechanism, a cold foiling mechanism, and a discharge mechanism, arranged sequentially along the outer side of an inner housing along the rotational direction. This invention utilizes a rotary mechanical synchronous conveyor system to achieve multi-color printing on various containers after each container is individually engaged with a respective positioning rod, offering the technical advantage of high printing speed.

[0005] Regarding the aforementioned related technologies, for containers with complex, irregular shapes, their surfaces often exhibit significant unevenness. For example, various decorative bottles or vases are often pear-shaped, characterized by a small mouth and a large body. These pear-shaped containers often experience positioning errors due to their shape and the center of gravity being biased toward the bottom. This makes it difficult to insert and mate the positioning rod with these containers, and the positioning rod can easily press against the bottle mouth, causing scratches or pitting, which can damage the container. Summary of the Invention

[0006] In order to prevent the positioning rod from pressing against the bottle mouth and causing damage to the bottle mouth during the silk screen printing process, the present application provides a silk screen printing machine for special-shaped containers.

[0007] The present application provides a special-shaped container screen printing machine that adopts the following technical solutions:

[0008] A screen printing machine for special-shaped containers, comprising a frame, a positioning component and a transfer component;

[0009] The positioning assembly and the transfer assembly are both arranged on the frame;

[0010] The positioning assembly includes a positioning cylinder seat, a floating cone block, a floating elastic member, and a positioning rod. A sliding chamber is provided inside the positioning cylinder seat. The floating cone block is slidably fitted in the sliding chamber, and the floating cone block is clearance-fitted with the inner wall of the sliding chamber. Both sides of the floating elastic member are respectively mounted on the positioning cylinder seat and the floating cone block. The positioning rod is mounted on the floating cone block. The positioning rod is used to be plugged into and fitted with the bottle mouth of the container.

[0011] The positioning cylinder seat is equipped with a floating ring, the floating ring is penetrated by a floating tapered hole, the floating tapered hole is connected to the sliding chamber, and the floating cone block is plugged into the floating tapered hole;

[0012] The floating tapered hole is provided with an enlarged opening and a reduced opening, and the diameter of the enlarged opening of the floating tapered hole is larger than the diameter of the reduced opening;

[0013] The floating cone block is provided with an enlarged end and a reduced end, the enlarged end of the floating cone block is adapted to the enlarged opening of the floating cone hole, and the reduced end of the floating cone block is adapted to the reduced opening of the floating cone hole;

[0014] The transfer assembly is used to move the bottle mouth of the container toward the positioning rod.

[0015] By adopting the above technical solution, when there is no deviation in the positioning of the container, the transfer assembly causes the bottle mouth of the container to move toward the positioning rod, and the floating cone block abuts and fits against the inner wall of the floating cone hole under the elastic action of the floating elastic member, so that the positioning rod is accurately inserted and fitted into the bottle mouth, reducing the situation where the positioning rod abuts against the bottle mouth and causes damage to the bottle mouth.

[0016] When the container's positioning deviates, the transfer assembly causes the container's bottle mouth to move toward the positioning rod, causing the positioning rod to abut against the container's bottle mouth, making it difficult to insert. When the positioning rod abuts against the container's bottle mouth, the container, through the positioning rod, pushes the floating cone block to overcome the elastic force of the floating elastic member and move away from the floating tapered hole, causing the floating cone block and the floating tapered hole to transition from a plug-in fit to a clearance fit. After transitioning to a clearance fit, the swinging of the floating cone block and the positioning rod is less susceptible to being limited by the inner wall of the floating tapered hole, and the floating cone block's degree of freedom increases with increasing deviation, allowing the positioning rod to deflect its own axis and slide along the inner wall of the bottle mouth, ultimately plugging into the bottle mouth. This not only helps ensure insertion accuracy, but also helps reduce the possibility of the positioning rod abutting against the bottle mouth, causing damage to the bottle mouth.

[0017] Furthermore, by using a transfer assembly to abut and secure the container's mouth and bottom, the system can also accommodate containers with more complex shapes, such as pears, spheres, oblate spheroids, and polyhedrons. Furthermore, it facilitates the replacement of small batches of containers with different shapes, making operation and commissioning simple.

[0018] Optionally, the inner wall of the floating cone hole is set straight, and the outer wall of the floating cone block is set straight.

[0019] By adopting the above technical solution, during the process of the fitting state of the floating cone block and the floating cone hole changing from the plug-in fitting state to the clearance fitting state, the distance between the floating cone block and the floating cone hole increases smoothly, which is beneficial for the floating cone block to adjust its posture accordingly according to the size of the deviation, thereby facilitating taking into account the accuracy and freedom of the positioning rod.

[0020] Optionally, the frame is equipped with a rotation drive member, and the rotation drive member is used to drive the positioning rod to rotate.

[0021] By adopting the above technical solution, it is convenient to perform screen printing on containers of various shapes from various angles. For example, screen printing can be performed on multiple sides of a multi-faceted container at a single station.

[0022] Optionally, a rotation locking ring is installed inside the sliding chamber, and the rotation locking ring is provided with a rotation locking groove, and the rotation locking groove faces the enlarged end of the floating cone block;

[0023] A rotation locking block is installed at the enlarged end of the floating cone block, and the rotation locking block is plugged into the rotation locking groove;

[0024] The inner wall of the rotation locking groove is provided with a groove body locking plane, and the outer wall of the rotation locking block is provided with a block body locking plane.

[0025] By adopting the above technical solution, after the bottle mouth of the container is plugged into the positioning rod, the transfer assembly continues to move the container in the same direction, so that the floating cone block overcomes the elastic force of the floating elastic member and moves away from the floating cone hole until the rotating locking block is plugged into the rotating locking groove, so that the floating cone block, the positioning rod and the positioning cone barrel will rotate at the same time under the action of the rotating drive member, thereby facilitating the precise control of the rotation angle of the container, thereby ensuring the accuracy of the container pattern position and clarity during the silk screen printing process.

[0026] Optionally, the floating cone block is equipped with an abutment ring, the diameter of which is larger than the diameter of the bottle mouth of the container. When the positioning rod is in a state of being plugged into the bottle mouth of the container, the abutment ring abuts against the bottle mouth of the container.

[0027] By adopting the above technical solution, the bottle mouth of the container is abutted against the abutment ring with a larger diameter and then acts on the floating cone block, which is beneficial to improving the stability of the container during rotation, and is also beneficial to ensuring that the rotation locking block is accurately inserted into the rotation locking groove before the container rotates, thereby ensuring that the floating cone block, the positioning rod and the positioning cone barrel will rotate at the same time under the action of the rotation drive member, thereby ensuring the accuracy of the container pattern position and clarity during the silk screen printing process.

[0028] Optionally, the positioning rod is an expansion shaft, and when the positioning rod is in a state of being plugged into and fitted into the bottle mouth of the container, the diameter of the positioning rod increases.

[0029] By adopting the above technical solution, it is beneficial to improve the positioning rod's ability to pass through the bottle mouth and to insert and fix containers of various diameters, thereby improving the applicability of the positioning rod.

[0030] Optionally, the special-shaped container screen printing machine further includes a fixing assembly, wherein the fixing assembly includes a bottle bottom push plate and a push plate driving member;

[0031] The bottle bottom pushing plate is used to abut against the bottle bottom of the container, and the pushing plate driving member is used to drive the bottle bottom pushing plate to approach or move away from the positioning rod.

[0032] By adopting the above technical solution, the positioning rod fixes the bottle mouth of the container while the bottle bottom push plate is assisted by the bottle bottom for fixation, which is beneficial to improve the stability of the container during the silk screen printing process, thereby meeting the subsequent silk screen printing, hot stamping, varnish and other functional requirements.

[0033] Optionally, the transfer assembly includes a conveyor belt, a container clamp, a vertical drive member, a horizontal drive member, and a flip drive member;

[0034] The conveyor belt is used to horizontally convey the container to be screen-printed, the container clamp is used to fix the container conveyed by the conveyor belt, the vertical drive is used to drive the container clamp to move vertically, the horizontal drive is used to drive the container clamp to move horizontally, and the flip drive is used to drive the container clamp to rotate.

[0035] By adopting the above technical solution, it is convenient to adjust the posture of the container through the vertical drive member, the horizontal drive member and the flip drive member according to the type or shape of the container, thereby ensuring that the bottle mouth of the container can be accurately aligned with the positioning rod.

[0036] Optionally, the frame is equipped with a posture detector, which is used to detect whether the axis of the positioning rod is in an accurate state or a deviation state;

[0037] The detection result of the posture detector is that when the axis of the positioning rod is in an accurate state, the axis of the positioning rod coincides with the axis of the bottle mouth of the container;

[0038] The detection result of the posture detector is that when the axis of the positioning rod is in a deviation state, the axis of the positioning rod intersects, is parallel to, or is not in the same plane as the axis of the bottle mouth of the container;

[0039] The posture detector is electrically connected to the transfer component.

[0040] By adopting the above technical solution, the transfer assembly can correct the posture of the container accordingly according to the detection result of the posture detector, thereby further ensuring that the bottle mouth of the container can be accurately aligned with the positioning rod.

[0041] Optionally, the positioning rod is equipped with a plug connector, and the surface of the plug connector is arranged in an arc shape.

[0042] By adopting the above technical solution, during the process of inserting the positioning rod into the bottle mouth of the container, the positioning rod can be smoothly inserted into the bottle mouth through the curved surface of the plug connector, thereby reducing friction between the positioning rod and the bottle mouth.

[0043] In summary, this application includes at least one of the following beneficial technical effects:

[0044] 1. When the container is positioned correctly, the transfer assembly moves the container's mouth toward the positioning rod. The floating cone, under the elastic action of the floating elastic member, abuts against the inner wall of the floating cone hole, allowing the positioning rod to precisely engage with the bottle mouth, reducing the risk of the positioning rod abutting against the bottle mouth and causing damage.

[0045] 2. When the positioning of the container deviates, the transfer assembly causes the bottle mouth of the container to move toward the positioning rod, causing the positioning rod to abut against the bottle mouth of the container and become difficult to insert. When the positioning rod abuts against the bottle mouth of the container, the container pushes the floating cone block through the positioning rod to overcome the elastic force of the floating elastic member and move away from the floating cone hole, so that the fitting state of the floating cone block and the floating cone hole changes from a plug-fit state to a clearance fit state. After changing to a clearance fit state, the swing of the floating cone block and the positioning rod is not easily limited by the inner wall of the floating cone hole, and the degree of freedom of the floating cone block will increase with the increase of the deviation, thereby allowing the positioning rod to deflect its own axis and slide along the inner wall of the bottle mouth, and finally plug-fit to the bottle mouth, which is beneficial for ensuring the plug-in accuracy and reducing the occurrence of the positioning rod abutting against the bottle mouth and causing damage to the bottle mouth;

[0046] 3. After the bottle mouth of the container is plugged into the positioning rod, the transfer assembly continues to move the container in the same direction, so that the floating cone block overcomes the elastic force of the floating elastic member and moves away from the floating cone hole until the rotation locking block is plugged into the rotation locking groove, so that the floating cone block, the positioning rod and the positioning cone barrel will rotate at the same time under the action of the rotation drive member, thereby facilitating the precise control of the rotation angle of the container, thereby ensuring the accuracy of the container pattern position and clarity during the silk screen printing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is an overall schematic diagram of the positioning component, transfer component and fixing component of the embodiment of the present application.

[0048] Figure 2It is an overall schematic diagram of the transfer component of an embodiment of the present application.

[0049] Figure 3 This is the first overall schematic diagram of the positioning component and the fixing component of the embodiment of the present application.

[0050] Figure 4 This is a second overall schematic diagram of the positioning component and the fixing component of the embodiment of the present application.

[0051] Figure 5 It is an overall schematic diagram of the positioning component of an embodiment of the present application.

[0052] Figure 6 This is the first exploded schematic diagram of the positioning component of the embodiment of the present application.

[0053] Figure 7 This is a second exploded schematic diagram of the positioning assembly according to an embodiment of the present application.

[0054] Figure 8 It is a cross-sectional schematic diagram of the positioning component of an embodiment of the present application.

[0055] Explanation of the accompanying drawings: 1. Transfer assembly; 11. Conveyor belt; 12. Container clamp; 13. Vertical drive member; 131. Vertical slide; 14. Horizontal drive member; 141. Horizontal slide; 15. Flip drive member; 2. Fixed assembly; 21. Bottle bottom push plate; 22. Push plate drive member; 221. Fixed slide; 3. Positioning assembly; 31. Positioning cylinder seat; 311. Sliding chamber; 32. Floating cone block; 321. Abutment ring; 33. Floating elastic member; 34. Positioning rod; 341. Plug connector; 35. Floating ring; 351. Floating cone hole; 36. Rotation locking ring; 361. Rotation locking groove; 37. Rotation locking block; 4. Rotation drive member; 5. Posture detector. DETAILED DESCRIPTION

[0056] The following is combined with Figure 1-8 This application is described in further detail.

[0057] The embodiment of the present application discloses a screen printing machine for special-shaped containers. Figure 1 The special-shaped container screen printing machine includes a frame, a transfer component 1, a fixing component 2 and a positioning component 3, and the transfer component 1, the fixing component 2 and the positioning component 3 are all arranged on the frame.

[0058] Reference Figure 1The transfer assembly 1 includes a conveyor belt 11, a container clamp 12, a vertical drive 13, a horizontal drive 14 and a flip drive 15. The conveyor belt 11 is used to horizontally transport the containers to be screen-printed. The containers are pear-shaped, and the diameter of the bottle mouth of the container is larger than the diameter of the bottle body. The material of the container can be glass, resin, porcelain, pottery, stone and / or metal. Specifically, in the embodiment of the present application, the conveyor belt 11 is used to transport containers made of glass. In addition, a rejection cylinder and a container sensor (not shown in the figure) are fixedly installed at the output end of the conveyor belt 11. When the container sensor detects defects such as cracks or pitting on the surface of the container, the rejection cylinder extends the output rod to horizontally push the container away from the conveyor belt 11, so that the container after screen printing is less likely to have obvious appearance defects.

[0059] Reference Figure 1 and Figure 2 The container clamp 12 is used to secure containers conveyed by the conveyor belt 11. The vertical drive 13 is used to drive the container clamp 12 to move vertically, the horizontal drive 14 is used to drive the container clamp 12 to move horizontally, and the flip drive 15 is used to drive the container clamp 12 to rotate. Therefore, after the container clamp 12 secures the container, the vertical drive 13, the horizontal drive 14, and the flip drive 15 adjust the container's posture, allowing containers of various types and shapes to be adjusted to the appropriate posture for subsequent positioning and securing.

[0060] Reference Figure 2Specifically, in the embodiment of the present application: the vertical drive member 13 is a linear cylinder, and the vertical drive member 13 is fixedly mounted on the frame. The output rod of the vertical drive member 13 is fixedly mounted with a vertical slide 131, and the vertical slide 131 is slidably coupled to the frame in the vertical direction through a slide rail. The horizontal drive member 14 is a motor, and the horizontal drive member 14 is fixedly mounted on the vertical slide 131. In addition, in the present application, the type of motor can preferably be a servo motor to ensure the smooth operation of the equipment and reduce the noise generated during operation, which will not be described in detail later. The output shaft of the horizontal drive member 14 is vertically arranged, and the horizontal drive member 14 is equipped with a horizontal slide 141 through a synchronous belt and two synchronous wheels. The horizontal slide 141 is fixedly mounted on the synchronous belt so that the horizontal slide 141 can be driven horizontally by the horizontal drive member 14. The flip drive member 15 is a motor, and the flip drive member 15 is fixedly mounted on the horizontal slide 141. A rotary damper is fixedly mounted on the bottom of the horizontal slide 141. The output shaft of the tilting drive 15 is positioned horizontally. The tilting drive 15 is connected to the output shaft of the rotary damper via a timing belt and two synchronous pulleys. This allows the rotary damper to ensure smooth rotation of the tilting drive 15. The container clamp 12 is a finger cylinder and is fixedly mounted to the output shaft of the rotary damper, allowing the tilting drive 15 and the rotary damper to drive the container clamp 12 in rotation. The two jaws of the container clamp 12 are used to secure a clamping jig (not shown). The inner side of the clamping jig is designed to correspond to the type and shape of the container, thereby securing the container by gripping the container surface with the inner side of the clamping jig.

[0061] Reference Figure 3 and Figure 4 The fixing assembly 2 includes a bottle bottom push plate 21 and a push plate driving member 22. The bottle bottom push plate 21 is used to abut and cooperate with the bottle bottom of the container. The push plate driving member 22 is used to drive the bottle bottom push plate 21 to move horizontally, so as to improve the stability of the container during the screen printing process by abutting against the bottle bottom.

[0062] Specifically, in this embodiment of the present application, the push plate driver 22 is a pneumatic cylinder, fixedly mounted to the frame, and its output rod is horizontally disposed. A fixed slide 221 is fixedly mounted to the output rod of the push plate driver 22. The fixed slide 221 slides horizontally relative to the frame via a guide rail. The bottom push plate 21 is circular and rotatably engages the fixed slide 221, enabling the push plate driver 22 to provide horizontal motion.

[0063] Reference Figure 4 and Figure 5The frame is fixedly mounted with a rotary drive member 4, which is a motor, and whose output shaft is horizontally oriented toward the bottle bottom push plate 21. The positioning assembly 3 includes a positioning cylinder seat 31, a floating cone block 32, a floating elastic member 33, and a positioning rod 34. The positioning cylinder seat 31 is coaxially fixedly mounted on the output shaft of the rotary drive member 4, so that the rotary drive member 4 can drive the driving cylinder seat to rotate.

[0064] Reference Figures 5 to 8 The interior of the positioning cylinder seat 31 defines a sliding chamber 311 extending horizontally. The floating cone 32 slides within the sliding chamber 311, with a clearance fit within the inner wall of the sliding chamber 311. This allows the floating cone 32 to deflect and change its orientation within the sliding chamber 311 during its sliding motion. A floating ring 35 is fixedly mounted on the positioning cylinder seat 31, located away from the rotating drive member 4.

[0065] The floating ring 35 has a floating tapered hole 351 extending through it. The inner wall of the floating tapered hole 351 is straight and has an enlarged opening and a reduced opening, with the enlarged opening having a larger diameter than the reduced opening. The floating cone block 32 is plugged into the floating tapered hole 351 and has a straight outer wall. The floating cone block 32 has an enlarged end and a reduced end, with the enlarged end having a larger diameter than the reduced end. The enlarged end of the floating cone block 32 fits within the enlarged opening of the floating tapered hole 351, while the reduced end of the floating cone block 32 fits within the reduced opening of the floating tapered hole 351. Furthermore, in the embodiment of the present application, both the floating tapered hole 351 and the floating cone block 32 are truncated cone-shaped, so that when the floating cone block 32 is plugged into the floating tapered hole 351, its outer wall tightly fits within the inner wall of the floating cone block 351.

[0066] The two sides of the floating elastic member 33 are fixedly mounted to the inner wall of the sliding chamber 311 and the floating cone block 32, respectively. The elastic force of the floating elastic member 33 forces the floating cone block 32 to fit tightly against the inner wall of the floating cone hole 351, thereby preventing the floating cone block 32 from wobbling within the floating cone hole 351. In this embodiment of the present application, the floating elastic member 33 is a linear spring, and its axis is arranged along the extension direction of the sliding chamber 311.

[0067] The positioning rod 34 is used to plug into the mouth of the container. The shape of the positioning rod 34 can be configured to correspond to the shape of the bottle mouth, so that the container is firmly fixed to the positioning rod 34, thereby securing the container via the positioning rod 34. The positioning rod 34 is fixedly mounted to the reduced end of the floating cone block 32 via a connecting rod, and the positioning rod 34 is located outside the sliding chamber 311 and the floating cone hole 351. Specifically, in the embodiment of the present application, to improve the applicability of the positioning rod 34, the positioning rod 34 is a pneumatic expansion shaft. After the positioning rod 34 is inserted into the bottle mouth, the positioning rod 34 expands its diameter and fits tightly against the inner wall of the bottle mouth, thereby securing containers of different specifications. In addition, the positioning rod 34 is fixedly installed with a plug connector 341, and the surface of the plug connector 341 is arranged in an arc shape, so that when the positioning rod 34 is inserted into the bottle mouth of the container, the arc surface of the plug connector 341 is passed through, and in the embodiment of the present application, it is arranged in a spherical surface, so that the positioning rod 34 can be smoothly inserted into the bottle mouth, thereby reducing the friction between the positioning rod 34 and the bottle mouth.

[0068] Reference Figure 7 and Figure 8 A rotation locking ring 36 is mounted within the sliding chamber 311. A rotation locking groove 361 is formed through the ring 36, facing the enlarged end of the floating cone 32. The inner wall of the rotation locking groove 361 is defined by six groove locking flats, giving the groove 361 a hexagonal shape. A rotation locking block 37 is fixedly mounted on the enlarged end of the floating cone 32, plugging into the rotation locking groove 361. The outer wall of the rotation locking block 37 is defined by six block locking flats, giving the block 37 a hexagonal prism shape. When the rotation locking block 37 is plugged into the rotation locking groove 361, the six block locking flats engage with each of the groove locking flats, causing the positioning cylinder seat 31, the floating cone 32, and the positioning rod 34 to rotate simultaneously under the action of the rotary drive 4. This, in turn, drives the container fixed to the positioning rod 34 to rotate, allowing printing on the container surface from multiple angles.

[0069] The floating cone 32 is fixedly mounted with a circular abutment ring 321, which has a diameter larger than the diameter of the container's mouth. When the positioning rod 34 is engaged with the container's mouth, the abutment ring 321 abuts and engages with the container's mouth, ensuring a more stable fixation of the container to the positioning rod 34. This also facilitates the container's abutment against the abutment ring 321, which allows the rotation locking block 37 to engage with the rotation locking groove 361. This allows the container to be precisely positioned and simultaneously locked during the fixation process, minimizing the risk of the positioning rod 34's rotation angle being out of sync with the rotation drive member 4.

[0070] Reference Figure 1 The frame is equipped with a posture detector 5, which is used to detect whether the axis of the positioning rod 34 is in an accurate state or a deviated state. The detection result of the posture detector 5 is that when the axis of the positioning rod 34 is in an accurate state, the axis of the positioning rod 34 coincides with the axis of the bottle mouth of the container; the detection result of the posture detector 5 is that when the axis of the positioning rod 34 is in a deviated state, the axis of the positioning rod 34 intersects, is parallel to, or is not in the same plane as the axis of the bottle mouth of the container. The posture detector 5 is electrically connected to the vertical drive 13, the horizontal drive 14, and the flip drive 15 of the transfer assembly 1, so that based on the detection result of the posture detector 5, the posture of the container fixed to the container clamp 12 is adjusted by the vertical drive 13, the horizontal drive 14, and the flip drive 15.

[0071] Specifically, in the embodiment of the present application, the posture detector 5 is a visual camera. The posture detector 5 compares the axis of the positioning rod 34 with a preset axis state to determine whether the axis of the positioning rod 34 is in an accurate state or a deviation state.

[0072] The implementation principle of a screen printing machine for special-shaped containers in the embodiment of the present application is as follows:

[0073] S1, the conveyor belt 11 transports the container to be screen-printed to the output end.

[0074] S2: The container clamp 12 clamps and secures the container at the output end of the conveyor belt 11. The vertical drive 13, horizontal drive 14, and tilt drive 15 then transfer the container between the positioning rod 34 and the bottom push plate 21. When the container is between the positioning rod 34 and the bottom push plate 21, the bottle mouth faces the positioning rod 34 horizontally, while the bottle base faces the bottom push plate 21 horizontally.

[0075] S3 , the horizontal driving member 14 drives the bottle mouth of the container to move toward the positioning rod 34 , until the positioning rod 34 is plugged into the bottle mouth through the plug connector 341 and abuts against the abutting ring 321 .

[0076] When the container is transferred to between the positioning rod 34 and the bottle bottom push plate 21 in the expected posture, the floating elastic member 33 causes the floating cone block 32 to fit tightly against the floating cone surface, thereby allowing the positioning rod 34 to be inserted into the bottle mouth in the expected posture, thereby reducing the situation where the positioning rod 34 presses against the bottle mouth and causes damage to the bottle mouth.

[0077] When the container is not transferred to the position between the positioning rod 34 and the bottle bottom push plate 21 in the expected posture, the plug connector 341 of the positioning rod 34 first abuts against the bottle mouth and pushes the floating cone block 32 to move in the direction away from the floating cone groove, so that the fitting state of the floating cone block 32 and the floating cone hole 351 is changed from a plug-fitting state to a clearance fitting state, thereby allowing the axis of the floating cone block 32 and the positioning rod 34 to autonomously adapt to the current posture of the container and allowing the positioning rod 34 to be smoothly inserted into the bottle mouth, thereby further reducing the situation where the positioning rod 34 abuts against the bottle mouth and causes damage to the bottle mouth.

[0078] In addition, during the movement of the bottle mouth toward the positioning rod 34, the posture detector 5 detects the axial posture of the positioning rod 34 in real time, and feeds back the signal to the vertical drive 13, the horizontal drive 14 and the flip drive 15, so that the posture of the container is adjusted in real time through the vertical drive 13, the horizontal drive 14 and the flip drive 15.

[0079] S4. The positioning rod 34 extends out of the pneumatic key and expands its own diameter until the pneumatic key of the positioning rod 34 is tightly fitted against the inner wall of the bottle mouth, so that the container is fixedly plugged into the positioning rod 34.

[0080] S5. The horizontal driving member 14 continues to drive the container to move horizontally, and pushes the floating cone block 32 and the rotation locking block 37 toward the rotation locking ring 36 through the container and the positioning rod 34 until the rotation locking block 37 is inserted into the rotation locking groove 361.

[0081] S6. The push plate driving member 22 retracts its output rod, so that the bottle bottom push plate 21 is tightly fitted against the bottle bottom.

[0082] S6 , the container clamp 12 releases the container, so that the container is firmly and accurately fixed between the positioning rod 34 and the bottle bottom push plate 21 .

[0083] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A screen printing machine for special-shaped containers, characterized by: It comprises a frame, a positioning component (3) and a transfer component (1); The positioning assembly (3) and the transfer assembly (1) are both arranged on a frame; The positioning assembly (3) includes a positioning cylinder seat (31), a floating cone block (32), a floating elastic member (33) and a positioning rod (34); a sliding chamber (311) is provided inside the positioning cylinder seat (31); the floating cone block (32) is slidingly fitted in the sliding chamber (311), and the floating cone block (32) is clearance-fitted with the inner wall of the sliding chamber (311); two sides of the floating elastic member (33) are respectively mounted on the positioning cylinder seat (31) and the floating cone block (32); the positioning rod (34) is mounted on the floating cone block (32); and the positioning rod (34) is used for plugging and fitting with the bottle mouth of the container; The positioning cylinder seat (31) is equipped with a floating ring (35), the floating ring (35) is penetrated by a floating tapered hole (351), the floating tapered hole (351) is connected to the sliding chamber (311), and the floating tapered block (32) is plugged into the floating tapered hole (351); The floating tapered hole (351) is provided with an enlarged opening and a reduced opening, and the diameter of the enlarged opening of the floating tapered hole (351) is larger than the diameter of the reduced opening; The floating cone block (32) is provided with an enlarged end and a reduced end, the enlarged end of the floating cone block (32) is adapted to the enlarged opening of the floating cone hole (351), and the reduced end of the floating cone block (32) is adapted to the reduced opening of the floating cone hole (351); The transfer assembly (1) is used to move the mouth of the container toward the positioning rod (34); The inner wall of the floating cone hole (351) is arranged straight, and the outer wall of the floating cone block (32) is arranged straight; The frame is equipped with a rotation drive member (4), and the rotation drive member (4) is used to drive the positioning rod member (34) to rotate; A rotation locking ring (36) is installed inside the sliding chamber (311), and a rotation locking groove (361) is formed in the rotation locking ring (36), and the rotation locking groove (361) faces the enlarged end of the floating cone block (32); A rotation locking block (37) is installed at the enlarged end of the floating cone block (32), and the rotation locking block (37) is plugged into and fitted into the rotation locking groove (361); The inner wall of the rotation locking groove (361) is provided with a groove body locking plane, and the outer wall of the rotation locking block (37) is provided with a block body locking plane; The floating cone block (32) is equipped with an abutment ring (321), the diameter of which is larger than the diameter of the bottle mouth of the container. When the positioning rod (34) is in a state of being plugged into and fitted with the bottle mouth of the container, the abutment ring (321) abuts and fits with the bottle mouth of the container. The positioning rod (34) is provided with a plug connector (341), and the surface of the plug connector (341) is arranged in an arc shape.

2. The screen printing machine for special-shaped containers according to claim 1, characterized in that: The positioning rod (34) is an expansion shaft. When the positioning rod (34) is in a state of being plugged into and fitted into the bottle mouth of a container, the diameter of the positioning rod (34) increases.

3. The screen printing machine for special-shaped containers according to claim 1, characterized in that: It also includes a fixing assembly (2), wherein the fixing assembly (2) includes a bottle bottom push plate (21) and a push plate driving member (22); The bottle bottom push plate (21) is used for abutting and fitting against the bottle bottom of the container, and the push plate driving member (22) is used for driving the bottle bottom push plate (21) to approach or move away from the positioning rod (34).

4. The screen printing machine for special-shaped containers according to claim 1, characterized in that: The transfer assembly (1) comprises a conveyor belt (11), a container clamp (12), a vertical drive member (13), a horizontal drive member (14) and a flip drive member (15); The conveyor belt (11) is used to horizontally convey the container to be screen-printed, the container clamp (12) is used to fix the container conveyed by the conveyor belt (11), the vertical driving member (13) is used to drive the container clamp (12) to move vertically, the horizontal driving member (14) is used to drive the container clamp (12) to move horizontally, and the flip driving member (15) is used to drive the container clamp (12) to rotate.

5. The screen printing machine for special-shaped containers according to claim 4, characterized in that: The frame is equipped with a posture detector (5), and the posture detector (5) is used to detect whether the axis of the positioning rod (34) is in an accurate state or a deviation state; The detection result of the posture detector (5) is that when the axis of the positioning rod (34) is in an accurate state, the axis of the positioning rod (34) coincides with the axis of the bottle mouth of the container; The detection result of the posture detector (5) is that when the axis of the positioning rod (34) is in a deviation state, the axis of the positioning rod (34) intersects, is parallel to, or is not in the same plane as the axis of the bottle mouth of the container; The posture detector (5) is electrically connected to the transfer component (1).

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