Transfer printing carrier and transmission equipment

Abstract

The transfer printing carrier comprises a barrel mold, the barrel mold is used for loading barrel-shaped workpieces, a cavity, an air inlet hole, an air outlet hole and an airflow channel are formed in the barrel mold, the air inlet hole, the air outlet hole and the airflow channel communicate with the cavity, the air outlet hole is provided with a breather valve assembly, and the breather valve assembly is provided with a balance weight unit; and the weight of the counterweight unit is greater than the thrust generated when the demolding airflow flows through the air outlet. The breather valve assembly in the transfer printing carrier is of a mechanical structure, demolding airflow is prevented from overflowing from the air outlet holes, the demolding efficiency is improved, and the breather valve assembly is simple in structure, reliable to use and low in manufacturing cost.

Description

Technical Field

[0001] The present application relates to the field of pad printing technology, and in particular to a pad printing carrier and a transmission device. Background Art

[0002] With the development of pad printing technology, transfer printing technology is widely used in curved workpieces, especially in barrel-shaped workpieces. Since the transfer pattern covers the circumferential outer surface of the barrel-shaped workpiece, in order to ensure the positioning effect, the existing carrier often uses the barrel-shaped workpiece to be placed on the carrier from its opening. However, the inventor found the following problems when using the carrier to load the barrel-shaped workpiece:

[0003] In order to ensure the stability of the carrier when loading the barrel-shaped workpiece, the carrier is in close contact with the barrel-shaped workpiece, and a sealed cavity is easily formed between the carrier and the barrel-shaped workpiece. When the barrel-shaped workpiece is installed on the carrier, the space between the barrel-shaped workpiece and the carrier is reduced and the gas is compressed, and the positive pressure gas will cause the barrel-shaped workpiece to be blocked from entering the carrier; or it will cause the barrel-shaped workpiece to not enter the mold properly, making it difficult to ensure the transfer position and quality.

[0004] During use, the positive pressure gas during loading needs to be released. In addition, after the carrier loads the barrel-shaped workpiece, in order to avoid the barrel-shaped workpiece from shifting, the method of pumping negative pressure between the carrier and the barrel-shaped workpiece is often used. If only the method of pumping negative pressure is used to release the positive pressure gas during loading, the negative pressure pumping process requires the positive pressure state of the sealed chamber to be pumped to the atmospheric pressure state, and then to the negative pressure state, resulting in a long time required for pumping negative pressure, a reduction in the material supply speed, and an impact on the overall production efficiency of the equipment. Summary of the invention

[0005] In order to solve the above technical problems, this application provides the following technical solutions:

[0006] On the one hand, the present application provides a pad printing carrier, including: a barrel mold, the barrel mold is used to load a barrel-shaped workpiece, the barrel mold has a cavity inside, an air inlet, an air outlet and an air flow channel connected to the cavity, the air outlet is provided with a breathing valve assembly, the breathing valve assembly is provided with a counterweight unit, the weight of the counterweight unit is greater than the thrust generated by the demolding airflow flowing through the air outlet.

[0007] In one embodiment, the air outlet is located within the projection range of the counterweight unit on the barrel mold along the moving direction of the counterweight unit.

[0008] In one embodiment, the breathing valve assembly includes a limiting unit and an elastic unit, and the limiting unit is connected to the barrel mold;

[0009] The counterweight unit is sleeved on the limiting unit, the elastic unit abuts against the counterweight unit, and presses the counterweight unit onto the air outlet.

[0010] In one embodiment, the breathing valve assembly includes a breathing piece, a limiting unit and an elastic unit, the limiting unit is connected to the barrel mold, and the breathing piece and the elastic unit are sleeved on the limiting unit;

[0011] The breathing piece covers the air outlet, and the elastic unit is arranged between the breathing piece and the counterweight unit.

[0012] In one embodiment, the air inlet and the air outlet are respectively arranged on two opposite sides of the barrel mold, and the barrel bottom of the barrel-shaped workpiece is attached to the side with the air inlet;

[0013] The air outlet and the air flow channel are arranged on the same side of the barrel mold.

[0014] In one embodiment, an outwardly protruding air pipe is provided at the center of the side surface of the barrel mold, and the flow channel is provided in the air pipe.

[0015] In one embodiment, the number of the air outlet holes is at least two, the air outlet holes are arranged on the outside of the trachea, and the breathing valve assembly is arranged corresponding to the air outlet holes.

[0016] In one embodiment, the limiting unit includes a pin shaft, and a mounting hole is provided on the barrel mold, and the pin shaft is installed in the mounting hole.

[0017] On the other hand, the present application also provides a transmission device, comprising:

[0018] Rotating shaft;

[0019] A rotating disk, the rotating disk is connected to the rotating shaft, and the rotating disk has a plurality of connecting units; and the pad printing carrier provided in the above embodiment, the pad printing carrier is connected to the connecting units;

[0020] The pad printing carrier has at least a barrel inlet station and a barrel outlet station. The barrel inlet station is flush with the horizontal plane where the axis of the rotating shaft is located or is located above the horizontal plane where the axis of the rotating shaft is located, and the barrel outlet station is located below the horizontal plane where the axis of the rotating shaft is located.

[0021] In one embodiment, an air pump is further included, the air pump is used to form a positive pressure demoulding gas or a negative pressure suction barrel gas, and the air pump is connected to the cavity through an air flow channel;

[0022] The pad printing carrier is located at the barrel feeding station, and the air pump forms barrel suction gas;

[0023] The pad printing carrier is located at the barrel unloading station, and the air pump generates demoulding gas.

[0024] This application has at least the following beneficial effects:

[0025] In the present application, a breathing valve assembly is provided and the positive pressure gas generated during loading is released through the air outlet so as to quickly exhaust the gas in the cavity, avoid obstruction of the barrel-shaped workpiece entering the mold, speed up the supply speed, and improve the pad printing efficiency.

[0026] By balancing the weight of the counterweight unit and the breathing piece, and coordinating the layout of the barrel discharge station, the deadweight of the counterweight unit is used to press the breathing piece, ensuring that positive pressure gas is input between the barrel workpiece and the barrel mold during the discharge process, and the gas outlet is not easy to leak gas. The positive pressure gas pushes the barrel workpiece to improve the separation efficiency. The breathing valve assembly adopts a mechanical structure to flexibly control the opening and closing of the gas outlet, with a simple structure, reliable use, and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A cross-sectional view of a pad printing carrier provided in accordance with an embodiment of the present application.

[0028] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0029] Figure 3 A cross-sectional view of a barrel mold provided in accordance with an embodiment of the present application.

[0030] Figure 4 A schematic diagram of a pad printing carrier provided in an embodiment of the present application at a first viewing angle.

[0031] Figure 5 A schematic diagram of a portion of the structure of a transmission device provided in one embodiment of the present application.

[0032] Reference numerals:

[0033] 10. Pad printing carrier;

[0034] 11. Barrel mold; 12. Counterweight unit; 13. Breathing piece; 14. Limiting unit; 15. Elastic unit;

[0035] 111. housing; 112. partition; 113. cover plate; 114. air pipe;

[0036] 1111, cavity; 1112, groove;

[0037] 1121. vent hole; 1122. clearance groove; 1123. mounting hole;

[0038] 1131, air intake hole;

[0039] 1141, air flow channel;

[0040] 141, pin; 142, fixing block;

[0041] 21. Rotation axis; 22. Connection unit;

[0042] 30. Barrel feeding station;

[0043] 40. Corona station;

[0044] 50. Positioning station;

[0045] 60. Transfer station;

[0046] 70. Curing station;

[0047] 80. Barrel unloading station. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0049] In the description of the present application, it should be understood that if the terms "length", "width", "thickness", "up", "down", "vertical", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0050] In addition, if the terms "first", "second", and "third" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] It should be noted that if an element is referred to as being "fixed to" or "disposed on" or "set on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0054] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0055] Reference Figure 5 As shown, in some embodiments of the present application, the present application provides a transmission device, including: a rotating shaft 21, a rotating disk, a pad printing carrier 10, and an air pump. The rotating disk is connected to the rotating shaft 21, and the rotating shaft 21 can drive the rotating disk to rotate around the axis direction of the rotating shaft 21. The rotating disk has a plurality of connecting units 22, and the pad printing carrier 10 is connected to the connecting units 22.

[0056] Specifically, the pad printing carrier 10 has a barrel feeding station 30, a corona station 40, a positioning station 50, a transfer station 60, a curing station 70 and a barrel discharging station 80, which are sequentially distributed on the circumferential outer side of the rotating disk, and each process in the transfer process can be performed at the barrel feeding station 30, the corona station 40, the positioning station 50, the transfer station 60, the curing station 70 and the barrel discharging station 80. The rotating shaft 21 can drive the rotating disk to rotate, so that the pad printing carrier 10 on the connecting unit 22 can be arranged one by one with the barrel feeding station 30, the corona station 40, the positioning station 50, the transfer station 60, the curing station 70 and the barrel discharging station 80.

[0057] In this solution, functional equipment for realizing different functions is arranged near the barrel feeding station 30, the corona station 40, the positioning station 50, the transfer station 60, the curing station 70 and the barrel exiting station 80. The functional equipment executes functional processes on the pad printing carrier 10 at the closest location, and cyclically performs barrel feeding, corona, positioning, transfer, curing and barrel exiting processing on the barrel-shaped workpiece in sequence, thereby automatically realizing transfer.

[0058] At the same time, in this solution, the transmission device drives the barrel-shaped workpiece to move, transfers the barrel-shaped workpiece to the pad printing device, and pad prints the curved surface of the barrel-shaped workpiece. Due to the limitation of the barrel-shaped workpiece structure, it is necessary to pad print the pattern on the outer peripheral surface of the barrel-shaped workpiece. In order to evenly transfer the pattern to the surface of the barrel-shaped workpiece, the connecting unit 22 can also drive the pad printing carrier 10 to rotate around the axis direction of the connecting unit 22.

[0059] During actual use, when the barrel-shaped workpiece is loaded into the pad printing carrier 10, the poor exhaust of gas between the barrel-shaped workpiece and the pad printing carrier 10 will cause the gas to be squeezed, making the gas into a positive pressure, and the positive pressure gas will affect the loading of the barrel-shaped workpiece into the pad printing carrier 10. In order to solve the above problem, the prior art reduces the air pressure between the barrel-shaped workpiece and the pad printing carrier 10 by pumping air pressure, but the pumping pressure needs to pump the positive pressure state to the atmospheric state, and then pump from the atmospheric state to the negative pressure state. In the process of pumping the positive pressure state to the atmospheric state, it is also necessary to push the barrel-shaped workpiece to continue to move toward the pad printing carrier 10 to ensure that the barrel-shaped workpiece is installed in a fixed position. In the process of pumping the positive pressure state to the atmospheric state, the space between the barrel-shaped workpiece and the pad printing carrier 10 is actually pumped from the positive pressure state to the atmospheric state. As the barrel-shaped workpiece continues to extend, the air pressure between the barrel-shaped workpiece and the pad printing carrier 10 will increase again. Then, the positive pressure state between the barrel-shaped workpiece and the pad printing carrier 10 is pumped to the atmospheric state. This process is repeated until the barrel-shaped workpiece is finally installed in a fixed position, and the space between the barrel-shaped workpiece and the pad printing carrier 10 is in the atmospheric state.

[0060] Since the suction barrel gas in the negative pressure state is slightly lower than the atmospheric pressure, the barrel-shaped workpiece and the pad printing carrier 10 can be fixed in position. In order to reduce costs and reduce damage to the barrel-shaped workpiece caused by low pressure, the air pump power is relatively small. However, the low air pump power will greatly affect the time spent on the cycle from the positive pressure state to the atmospheric state, making the loading efficiency of the transmission equipment low, thereby affecting the transmission efficiency and pad printing efficiency.

[0061] In some embodiments of the present application, Figure 1-3 As shown, the pad printing carrier 10 includes a barrel mold 11 and a breathing valve assembly. The barrel mold 11 has a hollow cavity 1111 inside, and an air inlet hole 1131 is provided on one surface of the barrel mold 11, and the air inlet hole 1131 is connected to the cavity 1111. The barrel-shaped workpiece loaded on the barrel mold 11 can cover the air inlet hole 1131, and an air outlet hole 1121 and an air flow channel 1141 are provided on the other surface of the barrel mold 11, and the air outlet hole 1121 and the air flow channel 1141 are respectively connected to the cavity 1111. When the opening of the barrel-shaped workpiece is loaded into the barrel mold 11, the barrel bottom of the barrel-shaped workpiece is attached to the side provided with the air inlet hole 1131, so that the barrel-shaped workpiece covers the air inlet hole 1131; at the same time, the air outlet hole 1121 will not be covered by the barrel-shaped workpiece to ensure that the air outlet hole 1121 is exhausted normally.

[0062] The breathing valve assembly is provided corresponding to the air outlet 1121, and the breathing valve assembly is used to control the opening and closing of the air outlet 1121. The breathing valve assembly closes the air outlet 1121, so that the cavity 1111 and the air flow channel 1141 form a sealed space. At this time, the air pump generates negative pressure suction gas, so that the cavity 1111 and the air flow channel 1141 maintain a negative pressure state, causing the barrel-shaped workpiece to be adsorbed on the barrel mold 11. Alternatively, the air pump generates positive pressure demolding gas, and the air pressure in the cavity 1111 and the air flow channel 1141 gradually expands, and the barrel-shaped workpiece gradually separates from the barrel mold 11.

[0063] In this solution, the breathing valve assembly includes a counterweight unit 12, a breathing piece 13, a limiting unit 14 and an elastic unit 15. The limiting unit 14 is connected to the barrel mold 11 and is arranged near the air outlet 1121. The breathing piece 13 is arranged outside the cavity 1111 and covers the air outlet 1121. The counterweight unit 12 is connected to the limiting unit 14 and can move toward the air outlet 1121. The elastic unit 15 is supported between the breathing piece 13 and the counterweight unit 12. The limiting unit 14 is arranged near the air outlet 1121 so that when the counterweight unit 12 is attached to the barrel mold 11, the counterweight unit 12 covers the air outlet 1121.

[0064] Since the weight of the counterweight unit 12 is large, the breathing piece 13 is supported by the elastic unit 15 and pressed on the air outlet 1121. The weight of the counterweight unit 12 is greater than the thrust generated by the demoulding airflow flowing through the air outlet 1121. On the one hand, during the loading of the barrel-shaped workpiece, the cavity 1111 has compressed positive pressure gas, and the positive pressure gas pushes the breathing piece 13 away from the air outlet 1121 through the air outlet 1121, and the elastic unit 15 is elastically deformed, so that the air outlet 1121 opens, and the gas can be discharged from the air outlet 1121, so that the cavity 1111 returns to the atmospheric pressure state. Because the cavity 1111 is under atmospheric pressure, the barrel-shaped workpiece is not hindered from being loaded into the barrel mold 11, ensuring that the barrel-shaped workpiece and the barrel mold 11 fit tightly. On the other hand, after the cavity 1111 returns to the atmospheric pressure state, the deformed elastic unit 15 is restored, and the breathing piece 13 covers the air outlet 1121 again. In this solution, the counterweight unit 12, the breathing piece 13, and the elastic unit 15 are used together to ensure that the air outlet 1121 can be automatically closed after being opened by the positive pressure gas. When the negative pressure is drawn, the cavity 1111 is in a negative pressure state, and the breathing piece 13 is adsorbed on the air outlet 1121, so that the air outlet 1121 is closed. According to the position change of the breathing piece 13 and the air outlet 1121, the breathing valve assembly flexibly controls the opening and closing of the air outlet 1121.

[0065] Further, based on the above-mentioned transmission device of the pad printing carrier 10, the rotating shaft 21 is arranged horizontally, the rotating shaft 21 is on the horizontal plane HL, the axis of the rotating shaft 21 is on the horizontal plane HL, and the rotating disk is perpendicular to the horizontal plane HL. The barrel inlet station 30 is flush with the horizontal plane HL where the axis of the rotating shaft 21 is located or is located above the horizontal plane HL where the axis of the rotating shaft 21 is located, and the barrel outlet station 80 is located below the horizontal plane HL where the axis of the rotating shaft 21 is located, and the pad printing carrier 10 installed on the connecting unit 22 rotates to the barrel outlet station 80 one by one.

[0066] In this solution, the air pump is connected to the connection unit 22 and is finally connected to the air flow channel 1141. The air pump switches the barrel suction gas and the demolding gas, so that the cavity 1111 forms a positive pressure state or a negative pressure state. When the pad printing carrier installed on the connection unit 22 rotates to the barrel discharge station 80, the air pump switches from the output barrel suction gas to the demolding gas, and the air pressure in the cavity 1111 is increased, so that the barrel-shaped workpiece and the barrel mold 11 are quickly separated.

[0067] Since the barrel discharging station 80 is located below the horizontal plane HL where the axis of the rotating shaft 21 is located, the counterweight unit 12 of the pad printing carrier 10 at the barrel discharging station 80 is affected by its own gravity, and the counterweight unit 12 moves toward the air outlet 1121. The counterweight unit 12 is pressed on the breathing plate 13 by its own gravity to ensure that the air outlet 1121 is closed. Positive pressure gas can only be discharged from the air inlet 1131 to push the barrel-shaped workpiece. The counterweight unit 12 is located below the horizontal plane HL in conjunction with the barrel discharging station 80, so that the breathing plate 13 can flexibly control the closure of the air outlet 1121. The layout design of the counterweight unit 12 and the barrel discharging station 80 ensures that when the positive pressure gas pushes the barrel-shaped workpiece out of the barrel mold 11, the positive pressure gas is difficult to overflow from the air outlet 1121.

[0068] Although the breathing valve assembly can also use a solenoid valve, the rotating disk and the pad printing carrier 10 itself rotate, which makes the movement of the pad printing carrier 10 more complicated. The solenoid valve needs to use electrical energy to work. Due to the complex movement of the pad printing carrier 10, it is difficult to power the solenoid valve of the pad printing carrier 10. The most critical problem is the layout of the power supply line (rotation will cause the power supply line to be tangled). In addition, the opening and closing of the solenoid valve also requires logic algorithm control, which is more prone to errors, affecting the use of the transmission equipment.

[0069] In this solution, the design of the breathing valve assembly can flexibly control the opening and closing of the air outlet 1121, and at least at the barrel inlet station 30, the positive pressure gas can overflow from the air outlet 1121. Correspondingly, at the barrel outlet station 80, the positive pressure gas is difficult to overflow from the air outlet 1121. More importantly, the breathing valve assembly uses a mechanical structure to control the opening and closing of the air outlet 1121, which is more reliable than the solenoid valve, has a longer service life, and a lower manufacturing cost.

[0070] At the same time, in order to prevent the pad printing carrier 10 at the barrel feeding station 30 from being pressed on the breathing plate 13 by the deadweight of the counterweight unit 12, the air outlet 1121 is closed, which makes it difficult for the positive pressure gas to be discharged from the air outlet 1121, thus affecting the position of the barrel-shaped workpiece installed on the barrel mold 11. Therefore, in this solution, the barrel feeding station 30 is flush with the horizontal plane HL or the barrel feeding station 30 is located above the horizontal plane HL, and the pressure of the counterweight unit 12 on the breathing plate 13 is removed to ensure the exhaust capacity of the air outlet 1121.

[0071] In some embodiments of the present application, the barrel mold 11 includes an outer shell 111, and the outer shell 111 has a hollow cavity inside, and the cavity extends to two opposite sides of the outer shell 111 to form an opening, one of which is covered and connected with a cover plate 113. Exemplarily, the outer shell 111 is a tubular structure. A partition 112 is provided in the cavity, and the partition 112 divides the cavity into two sub-cavities, one of which is covered by the cover plate 113 with a close opening, so that the sub-cavity constitutes a closed cavity 1111. In addition, the cavity is separated by the partition 112 into another sub-cavity as a groove 1112, and the breathing valve assembly is located in the groove 1112. Among them, the air inlet 1131 is opened on the cover plate 113, and the air outlet 1121 and the air flow channel 1141 are opened on the partition 112.

[0072] In this solution, the breathing valve assembly is located in the groove 1112. Specifically, the breathing valve assembly is sunken in the groove 1112, and when the pad printing carrier 10 moves, the breathing valve assembly is prevented from being interfered with by external structures. That is, the counterweight unit 12 is protected by the shell 111, reducing the risk of external structures contacting the counterweight unit 12, causing the counterweight unit 12 to deviate and affect the normal opening and closing of the breathing piece 13.

[0073] Furthermore, the partition 112 is connected to an air pipe 114, and an airflow channel 1141 is arranged in the air pipe 114, and the air pipe 114 extends outward to extend out of another opening. An airway connected to the air pump is arranged in the connecting unit 22. After the connecting unit 22 is connected to the air pipe 114, the air pump and the cavity 1111 form a gas passage, which facilitates the formation of a negative pressure state or a positive pressure state in the cavity 1111 according to demand. At the same time, the connection unit 22 is connected to the air pipe 114 to fix the positional relationship between the pad printing carrier 10 and the connecting unit 22, and the airflow channel 1141 and the airway are respectively arranged in the air pipe 114 and the connecting unit 22, which reduces the additional pipelines used to form a negative pressure state or a positive pressure state in the cavity 1111, and simplifies the structural design. In this embodiment, the air pipe 114 is arranged at the center position of the partition 112. The connecting unit 22 is connected to the air pipe 114 to drive the pad printing carrier to rotate, so that the axial direction of the air flow channel 1141 is in the same straight line as the rotation axis. The air pipe 114 serves as both a rotating axis and a gas channel between the air pump and the cavity 111.

[0074] A clearance groove 1122 is provided on the surface of the partition 112 on one side close to the groove. The clearance groove 1122 is provided corresponding to the counterweight unit 12, and the counterweight unit 12 can be embedded in the clearance groove 1122. The counterweight unit 12 can be embedded in the clearance groove 1122, specifically, the projection of the counterweight unit 12 in its moving direction falls in the clearance groove 1122. When the counterweight unit 12 moves toward the air outlet 1121 under the action of gravity, the counterweight unit 12 finally falls into the clearance groove 1122. At the same time, the breathing piece 13 is located in the clearance groove 1122, and the position of the breathing piece 13 can also be limited by the clearance groove 1122. When the counterweight unit 12 is pressed on the breathing piece 13, the relative position of the counterweight unit 12 and the breathing piece 13 can also be guaranteed, so as to avoid the counterweight unit 12 and the breathing piece 13 from being offset too much and affecting the airtightness of the air outlet 1121.

[0075] Furthermore, refer to Figure 4 As shown, the number of the air outlet holes 1121 is at least two, and the air outlet holes 1121 are distributed around the air flow channel 1141. Since the connection unit 22 is required to drive the pad printing carrier 10 to rotate, and there is a gas passage in the connection unit 22 and the air pipe 114, the air pipe 114 is arranged at the center of the surface of one side of the barrel mold 11. Specifically, in order to adapt to the barrel-shaped workpiece, the outer contour of the barrel mold 11 is cylindrical or truncated cone. The air pipe 114 is arranged at the center of the surface of one side of the barrel mold 11, including: when the outer contour of the barrel mold 11 is truncated cone, the air pipe 114 and the air outlet holes 1121 are arranged on the bottom surface with a large area, and the axis of the air pipe 114 is in the same straight line as the axis of the barrel mold 11. The air pipe 114 and the air outlet holes 1121 are arranged on the bottom surface with a large area, and the opening of the barrel-shaped workpiece is larger than the other bottom surface of the barrel mold 11 with a smaller area, so that the barrel-shaped workpiece can be sleeved on the barrel mold 11.

[0076] The number of the air outlet holes 1121 is set to be multiple, which increases the contact area between the cavity 1111 and the external atmosphere, so as to increase the discharge rate of the positive pressure gas in the cavity 1111, thereby increasing the barrel loading speed of the pad printing carrier 10 located at the barrel loading station 30, and improving the production efficiency. In addition, the number of the air outlet holes 1121 is set to be multiple so that when a plurality of the air outlet holes 1121 fail, the pad printing carrier 10 located at the barrel loading station 30 can still be loaded normally. Among them, the number of the plurality of air outlet holes 1121 is less than the total number of the air outlet holes 1121.

[0077] In a specific embodiment of the present application, the limiting unit 14 includes a pin 141 and a fixing block 142, and the counterweight unit 12 is movably connected to the pin 141, that is, the counterweight unit 12 can move relative to the pin 141, and a mounting hole 1123 is provided on the barrel mold 11, specifically, the mounting hole 1123 is provided on the partition 112. The limiting unit 14 is fixed to the barrel mold 11 through the mounting hole 1123. Pin 141.

[0078] More specifically, the mounting hole 1123 passes through the partition 112, and the mounting hole 1123 communicates with the cavity 111. The pin 141 passes through the mounting hole 1123 and extends into the cavity 111. The fixing block 142 is threadedly connected to the pin 141, and the fixing block 142 is located in the cavity 111. In this solution, the pin 141 and the mounting hole 1123 are interference-fitted to ensure the sealing of the mounting hole 1123.

[0079] The air outlet 1121 is arranged close to the mounting hole 1123 . The breathing piece 13 and the counterweight unit 12 are sleeved on the pin 141 . The breathing piece 13 and the counterweight unit 12 move relative to the pin 141 , and the counterweight unit 12 can move toward the air outlet 1121 .

[0080] In this solution, the position between the pin 141 and the barrel mold 11 is relatively fixed, and the counterweight unit 12 is sleeved on the pin 141 and can move relative to the pin 141. The pin 141 can also guide the movement trajectory of the counterweight unit 12. The breathing piece 13 can be sleeved on the pin 141, or a clearance space can be set on the breathing piece 13 at the position of the pin 141. The breathing piece 13 moves relative to the outer surface of the barrel mold 11.

[0081] Furthermore, at least two air holes 1121 are distributed on the circumferential outer side of the mounting hole 1123. The multiple air holes 1121 near the mounting hole 1123 are covered by the same breathing sheet 13, thereby increasing the area of ​​the air holes 1121 used by a single breathing valve assembly to exhaust gas, so as to quickly discharge the positive pressure gas.

[0082] The above embodiments are used to further illustrate the present application, but the present application is not limited to these specific implementations. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be understood to be within the scope of protection of the present application.

Claims

1. A pad printing carrier, characterized in that: include: A barrel mold (11), the barrel mold (11) is used to load a barrel-shaped workpiece, the barrel mold (11) has a cavity (1111) inside, an air inlet (1131), an air outlet (1121) and an air flow channel (1141) connected to the cavity (1111), the air outlet (1121) is provided with a breathing valve assembly, the breathing valve assembly is provided with a counterweight unit (12), the weight of the counterweight unit (12) is greater than the thrust generated by the demoulding airflow flowing through the air outlet (1121).

2. The pad printing carrier according to claim 1, characterized in that: The air outlet (1121) is located within the projection range of the counterweight unit (12) on the barrel mold (11) along the moving direction of the counterweight unit (12).

3. The pad printing carrier according to claim 2, characterized in that: The breathing valve assembly comprises a limiting unit (14) and an elastic unit (15), wherein the limiting unit (14) is connected to the barrel mold (11); The counterweight unit (12) is sleeved on the limiting unit (14), and the elastic unit (15) abuts against the counterweight unit (12) and presses the counterweight unit (12) onto the air outlet (1121).

4. The pad printing carrier according to claim 2, characterized in that: The breathing valve assembly comprises a breathing piece (13), a limiting unit (14) and an elastic unit (15); the limiting unit (14) is connected to the barrel mold (11); the breathing piece (13) and the elastic unit (15) are sleeved on the limiting unit (14); The breathing sheet (13) covers the air outlet (1121), and the elastic unit (15) is arranged between the breathing sheet (13) and the counterweight unit (12).

5. The pad printing carrier according to any one of claims 1 to 4, characterized in that: The air inlet (1131) and the air outlet (1121) are respectively arranged on two opposite sides of the barrel mold (11), and the barrel bottom of the barrel-shaped workpiece is attached to the side surface provided with the air inlet (1131); The air outlet (1121) and the air flow channel (1141) are arranged on the same side of the barrel mold (11).

6. The pad printing carrier according to claim 5, characterized in that: An outwardly protruding air pipe (114) is provided at the center position of the side surface of the barrel mold (11), and the flow channel (1141) is provided in the air pipe (114).

7. The pad printing carrier according to claim 6, characterized in that: The number of the air outlet holes (1121) is at least two, and the air outlet holes (1121) are arranged on the outside of the air pipe (114), and the breathing valve assembly is arranged corresponding to the air outlet holes (1121).

8. The pad printing carrier according to any one of claims 1 to 4, characterized in that: The limiting unit (14) comprises a pin shaft (141); a mounting hole (1123) is provided on the barrel mold (11); and the pin shaft (141) is mounted in the mounting hole (1123).

9. A transmission device, characterized in that: include: A rotating shaft (21); A rotating disk, the rotating disk being connected to the rotating shaft (21), and having a plurality of connecting units (22); as well as The pad printing carrier according to any one of claims 1 to 8, wherein the pad printing carrier is connected to the connecting unit (22); The pad printing carrier has at least a barrel loading station (30) and a barrel unloading station (80), wherein the barrel loading station (30) is flush with the horizontal plane where the axis of the rotating shaft (21) is located or is located above the horizontal plane where the axis of the rotating shaft (21) is located, and the barrel unloading station (80) is located below the horizontal plane where the axis of the rotating shaft (21) is located.

10. The transmission device according to claim 9, characterized in that: It also includes an air pump, the air pump is used to form a positive pressure demoulding gas or a negative pressure suction bucket gas, and the air pump is connected to the cavity (1111) through the air flow channel (1141); The pad printing carrier is located at the barrel feeding station (30), and the air pump forms the barrel suction gas; The pad printing carrier is located at the barrel unloading station (80), and the air pump forms the demoulding gas.

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