Heat transfer printing cup wrapping machine with quick-assembly buckle

Abstract

The utility model relates to a heat transfer printing cup wrapping machine with a quick-assembly buckle, which comprises an elastic fastening leather on which heat transfer printing paper, a wrapping workpiece and the heat transfer printing paper are sequentially placed on a working table from top to bottom, and cross rods arranged on two sides of the rectangular elastic fastening leather used for wrapping the heat transfer printing paper on the outer circular surface of the workpiece, the length of the two transverse rods is larger than the width of the rectangular elastic fastening leather, the parts, extending out of the elastic fastening leather, of the transverse rods are arranged to be hinged shafts of the hinges, sleeves of the hinges are connected with one leg of the U-shaped component, the other leg of the U-shaped component is used for hooking the other transverse rod of the elastic fastening leather, and the elastic fastening leather and the heat transfer printing paper are wrapped on the outer circle face of a workpiece to be fixed. According to the utility model, the cross rod on one of the two sides of the rectangular elastic fastening leather is used as a hinged shaft, and the sleeve fixedly connected with the U-shaped component is sleeved on the cross rod, so that the buckle and the cross rod are connected into a whole, the action of picking up the buckle in the process of fixing the elastic fastening leather is saved, the assembling and disassembling processes of the buckle are simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a thermal transfer cup wrapping machine with a quick-release buckle, which is a mechanical tool and a mechanical device for accurately wrapping a thermal transfer paper and an elastic fastening leather around the outer cylindrical surface of a rotating body before thermal transfer. Background Art

[0002] When performing thermal transfer on the outer cylindrical surface of a rotating body, it is necessary to tightly and accurately wrap the thermal transfer paper around the position of the rotating body where the image needs to be printed. The previous methods usually adopt manual wrapping or mechanical automatic wrapping. Manual wrapping has low efficiency. A relatively skilled worker needs 3 - 4 minutes to wrap each cup, which is suitable for small-batch production. Although mechanical automatic wrapping has high efficiency, due to the need for a large number of expensive devices such as molds and their matching manipulators, the cost is greatly increased. Mechanical automatic production is only suitable for large-batch production. In some medium-batch production, a semi-automatic cup wrapping device that requires both high efficiency and cost control is needed. The existing cup wrapping machine needs to tightly and accurately wrap the thermal transfer paper around the position of the cylindrical workpiece where the image needs to be printed on the outer cylindrical surface of the rotating body. Usually, for the thermal transfer of a cup (cylindrical workpiece), an elastic fastening leather is used to wrap the thermal transfer paper around the outer cylindrical surface of the workpiece, and a buckle is used to fasten the cross bars at both ends of the elastic fastening leather together. The elastic fastening leather is used to tightly attach the thermal transfer paper to the workpiece by its elasticity. Here, there is a key auxiliary tool, the buckle. In the prior art, the cross bar and the buckle are separated. During the process of the swing arm of the cup wrapping machine tightening the elastic fastening leather, it is necessary to free one hand to pick up the buckle, and the process of picking up the buckle is equivalent to increasing the auxiliary operation time and reducing the work efficiency. How to reduce the auxiliary time of picking up the buckle and improve the work efficiency is a problem that needs to be solved. Summary of the Invention

[0003] In order to overcome the problems of the prior art, the utility model provides a thermal transfer cup wrapping machine with a quick-release buckle. The buckle of the elastic fastening leather of the cup wrapping machine uses the cross bar as a hinge shaft, and a sleeve fixedly connected with a U-shaped member is sleeved, so that the buckle and the cross bar are integrated, thereby simplifying the installation and disassembly process of the buckle and improving the work efficiency of the cup wrapping machine.

[0004] The object of the present utility model is achieved as follows: A heat transfer cup wrapping machine with quick-release fasteners, comprising: a mandrel installed on a bracket for fixing a workpiece and capable of moving up and down, a rectangular workbench is provided below the mandrel, a semi-circular depression matching the outer circle of the workpiece is provided in the middle of the workbench, a heat transfer paper and an elastic fastening skin for wrapping the workpiece and the heat transfer paper are sequentially placed on the workbench from top to bottom, cross bars are provided at both ends of the elastic fastening skin, four swing arms are provided on both sides of the lifting workbench in pairs opposite to each other, one end of the swing arm is connected to a rotary power mechanism, and a hook capable of hooking the cross bar is provided at the other end, elastic fastening skin and heat transfer paper positioning blocks capable of adjusting positions are provided on the four sides of the workbench, the length of the cross bars on both sides of the elastic fastening skin is greater than the width of the rectangular elastic fastening skin, the part of the cross bar extending out of the elastic fastening skin is set as the hinge shaft of the hinge, the sleeve of the hinge is connected to one leg of the U-shaped member, and the other leg of the U-shaped member is a hook for hooking the other cross bar of the elastic fastening skin, so as to fix the elastic fastening skin and the heat transfer paper on the outer circumferential surface of the workpiece.

[0005] Further, the tip of the hook is triangular, the triangle is connected to the semi-circular depression, and the radius of curvature of the semi-circular depression matches the radius of the cross bar.

[0006] Further, there are two U-shaped members, which are arranged on the same side of the rectangular elastic fastening skin.

[0007] Further, there are two U-shaped members, which are arranged diagonally on the rectangular elastic fastening skin.

[0008] Further, a limiting facility for restricting the axial movement of the sleeve along the cross bar is provided on the cross bar.

[0009] Further, the limiting facility is a protrusion provided on the cross bar.

[0010] Further, the limiting facility is a groove provided on the cross bar, and a snap ring is provided in the groove.

[0011] Further, the limiting facility is a groove provided on the cross bar, a pin shaft is provided on the sleeve, and an elastic button and a return spring are provided on the pin shaft.

[0012] The advantages and beneficial effects of the present utility model are: The present utility model uses one of the cross bars on both sides of the rectangular elastic fastening skin of the cup wrapping machine as the hinge shaft, and sleeved with a sleeve fixedly connected to the U-shaped member, so that the fastener and the cross bar are integrated into one body, saving the action of picking up the fastener during the process of fixing the elastic fastening skin, simplifying the installation and disassembly process of the fastener, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0014] Figure 1 is a schematic structural diagram of the cup wrapping machine according to Embodiment 1 of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the elastic fastening skin and the U-shaped member according to Embodiment 1 of the present utility model, is a schematic diagram of the rectangular elastic fastening skin being unfolded and the U-shaped member being in a free state, and is Figure 1 an enlarged view in the direction of A in

[0016] Figure 3 is a schematic structural diagram of the elastic fastening skin and the U-shaped member according to Embodiment 1 of the present utility model, is a schematic diagram of the rectangular elastic fastening skin being unfolded and the U-shaped member being in a free state, and is Figure 2 a view in the direction of B in

[0017] Figure 4 is a schematic structural diagram of the elastic fastening skin and the U-shaped member according to Embodiment 1 of the present utility model, is a schematic diagram of the rectangular elastic fastening skin wrapping the heat transfer paper and the workpiece and the U-shaped member hooking the cross bar, and is in a state of fixing the elastic fastening skin;

[0018] Figure 5 is a schematic structural diagram of the elastic fastening skin and the U-shaped member according to Embodiment 1 of the present utility model, is a schematic diagram of the rectangular elastic fastening skin wrapping the heat transfer paper and the workpiece and the U-shaped member hooking the cross bar, and is in a state of fixing the elastic fastening skin, and is Figure 4 an enlarged view of point C in

[0019] Figure 6 is a schematic diagram of the hook of the U-shaped member according to Embodiment 2 of the present utility model, and is Figure 5 an enlarged view of point F in

[0020] Figure 7 is a schematic diagram of the position of the diagonal limit facility according to Embodiment 3 of the present utility model;

[0021] Figure 8 is a schematic diagram of the convex structure of the limit facility according to Embodiment 5 of the present utility model, and is Figure 2 an enlarged view of point G in

[0022] Figure 9 is a schematic diagram of the snap ring structure of the limit facility according to Embodiment 6 of the present utility model, and is Figure 2 an enlarged view of point G in

[0023] Figure 10 is a schematic diagram of the elastic button structure of the limit facility according to Embodiment 7 of the present utility model, and is Figure 2 an enlarged view of point G in

[0024] Figure 11It is a schematic structural view of the elastic button of the limit facility described in the seventh embodiment of the present utility model, and it is Figure 10 the H-H sectional view in Specific implementation mode

[0025] Embodiment 1:

[0026] This embodiment is a heat transfer cup wrapping machine with quick-release fasteners, as shown in Figure 1 , 2 , 3, 4, 5. This embodiment includes: a mandrel 2 installed on a bracket 1 for fixing a workpiece and capable of moving up and down. A rectangular workbench 3 is provided below the mandrel. A semi-circular depression 301 matching the outer circle of the workpiece is provided in the middle of the workbench. A heat transfer paper 4 and an elastic fastening skin 5 for wrapping the workpiece and the heat transfer paper are sequentially placed on the workbench from top to bottom. Cross bars 501 are provided at both ends of the elastic fastening skin. Four swing arms 6 are provided on both sides of the lifting workbench in pairs. One end of the swing arm is connected to a rotary power mechanism, and a hook capable of hooking the cross bar is provided at the other end. Elastic fastening skin and heat transfer paper positioning blocks 7 capable of adjusting positions are provided on the four sides of the workbench (see Figure 1 ). The length of the cross bars on both sides of the elastic fastening skin is greater than the width of the rectangular elastic fastening skin (see Figure 2 ). The part of the cross bar extending out of the elastic fastening skin is set as the hinge shaft of the hinge. The sleeve 801 of the hinge is connected to one leg 802 of the U-shaped member 8. The other leg 803 of the U-shaped member is a hook for hooking the other cross bar of the elastic fastening skin, and the elastic fastening skin and the heat transfer paper are wrapped and fixed on the outer circular surface of the workpiece.

[0027] The core component of heat transfer is the heat transfer paper, on which various color patterns are printed. The elastic fastening skin is the main tool for wrapping the heat transfer paper on the outer surface of the workpiece.

[0028] The swing arm is driven by a motor through a rotary reduction mechanism to form a swing, such as Figure 1 swinging in the direction of arrow D in

[0029] The workpiece 01 in this embodiment is the cup to be subjected to heat transfer. The outer shape of the cup is a cylindrical rotating body, which may or may not have a cup handle.

[0030] The described bracket can be an L-shaped rectangular block placed on the workbench, having a certain weight to prevent movement during work, or directly fixed to the workbench. The bracket can also be a floor-standing type, placed on the ground, with the workbench at a height suitable for the operator to sit in front of the table for operation.

[0031] The described mandrel is a cylinder with a diameter that fits the inner wall of the cup (workpiece), capable of axially and radially positioning the workpiece and maintaining this axial and radial positioning during the operation of wrapping the transfer paper. The mandrel can move up and down driven by the up and down movement mechanism, such as Figure 1 moving up and down in the direction of arrow E in

[0032] A cup handle positioning block can be set above the mandrel. This cup handle positioning block is specifically used for circumferential positioning of the cup with a cup handle to determine the relative position of the heat transfer image on the outer circular surface of the cup and the cup handle.

[0033] In order to accurately determine the relative position of the heat transfer image relative to the bottom or mouth of the cup, axial positioning steps corresponding to the edges of the transfer paper can be set on the mandrel to improve the position accuracy of the heat transfer image.

[0034] The mandrel can move up and down so as to press on the transfer paper and press the heat transfer together with the elastic fastening skin including the transfer paper into the semi-circular depression. Therefore, a set of lifting mechanism is required for the lifting of the mandrel. The lifting mechanism can adopt a guide rail and a slider running on the guide rail, and cooperate with a push-pull member to form a lifting action.

[0035] For convenient operation, control buttons for controlling the lifting of the mandrel, the lifting of the workbench, and the swinging of the rocker arm can be provided on both sides of the workbench.

[0036] The role of the described U-shaped buckle is to buckle the cross bar of the two elastic fastening skins held together to maintain the held-together state, so that the transfer paper maintains a state of fitting the surface of the workpiece during the heating process.

[0037] The rectangular elastic fastening skin described in this embodiment is a rectangular thin sheet made of a material with good elasticity (such as rubber, plastic, etc.). Through holes with the same length as the short side of the rectangle are provided on the two short sides of the rectangle, and the cross bar passes through the through holes. The length of the cross bar should be greater than the length of the short side of the rectangular elastic fastening skin. Therefore, there are two parts of the cross bar extending out of the fastening skin for setting hinges and buckling. The described cross bar is usually a metal bar that is not easily deformed and has a certain strength. The cross-sectional shape of the metal bar is circular, the outer circular surface is smooth, and it has a certain outer circular dimension accuracy and can be used as a hinge shaft. Figure 2 、 3 is the state where the rectangular elastic fastening skin is opened, Figure 4 is the state where the rectangular elastic fastening skin wraps the outer circular surface of the workpiece (cup).

[0038] The key of this embodiment is the U-shaped member acting as a buckle. The U-shaped member is usually made of metal and has a certain stiffness and toughness against deformation. The specific structure of the U-shaped member has two legs and a crossbeam connecting in the middle. One leg serves as a hinge and the other leg serves as a hook to hook another crossbar. As shown in Figure 4 , 5 , an elastic fastening skin is wrapped around the cup for fixation.

[0039] The shape of the hook can have various forms, including a straight hook, an inclined hook, etc.

[0040] Generally, two U-shaped members with hinges are provided. The two U-shaped members can be placed on one side of the rectangular elastic fastening skin or arranged diagonally.

[0041] To prevent the sleeve of the U-shaped member from axially moving along the crossbar, a limit setting can be provided on the crossbar, such as providing a protrusion or a groove on the crossbar, installing a snap ring in the groove, or adopting a mechanism that is convenient for disassembly, so that the U-shaped member can be disassembled and installed at any time, making the installation operation of the buckle more flexible and variable, and improving work efficiency.

[0042] Embodiment Two:

[0043] This embodiment is an improvement of Embodiment One and is a refinement of the hook of the U-shaped member in Embodiment One. The tip 8031 of the hook described in this embodiment is triangular, and the triangular part is connected to a semicircular depression 8032. The radius of curvature of the semicircular depression matches the radius of the crossbar.

[0044] The fact that the radius of curvature of the semicircular depression matches the radius of the crossbar means that the radius of curvature of the semicircular depression is equal to or slightly larger than the radius of the crossbar, so that the depression can hold the crossbar.

[0045] Embodiment Three:

[0046] This embodiment is an improvement of Embodiment Two and is a refinement of the U-shaped member in Embodiment Two. There are two U-shaped members described in this embodiment, which are arranged on the same side of the rectangular elastic fastening skin, as shown in Figure 2 .

[0047] Embodiment Four:

[0048] This embodiment is an improvement of Embodiment Two and is a refinement of the U-shaped member in Embodiment Two. There are two U-shaped members described in this embodiment, which are arranged diagonally on the rectangular elastic fastening skin, as shown in Figure 7 .

[0049] The diagonal installation can make the arrangement on the workbench of the U-shaped member more convenient and facilitate the operator to obtain.

[0050] Embodiment Five:

[0051] This embodiment is an improvement of the above embodiment and is a refinement of the cross bar in the above embodiment. A limiting facility for restricting the axial movement of the sleeve along the cross bar is provided on the cross bar in this embodiment.

[0052] Since the sleeve can slide axially on the cross bar, it is easy to slip off the cross bar without any measures. Therefore, a limiting setting can be provided on the cross bar to prevent the U-shaped member from slipping off the cross bar. The limiting setting can have various forms. If simply preventing the U-shaped member from slipping off the cross bar, a plug with a diameter larger than the cross bar can be provided at the end of the cross bar. Or two protrusions can be provided at a specific position, and the width between the two protrusions is the width of the sleeve, thereby forming an axial constraint on the sleeve and its U-shaped member, and completely determining the axial position of the U-shaped member. A groove can also be provided on the cross bar, and a snap ring is placed in the groove to limit the axial position of the U-shaped member by using the snap ring. This is a detachable limiting facility. Or a spring-loaded button mechanism can be provided between the groove and the sleeve to make the disassembly and assembly of the U-shaped member more convenient.

[0053] Embodiment Six:

[0054] This embodiment is an improvement of the above embodiment and is a refinement of the limiting facility in the above embodiment. The limiting facility described in this embodiment is a protrusion 5011 provided on the cross bar, as Figure 8 shown.

[0055] In this embodiment, protrusions are provided on both sides of the U-shaped member on the cross bar, and they are annular protrusions. It can also be a simple single-point protrusion that is sufficient to meet the requirements, or only two welds are needed on both sides of the U-shaped member.

[0056] Embodiment Seven:

[0057] This embodiment is an improvement of the above embodiment and is a refinement of the limiting facility in the above embodiment. The limiting facility described in this embodiment is a groove 5012 provided on the cross bar, and a snap ring 5013 is provided in the groove, as Figure 9 shown.

[0058] In this embodiment, grooves are provided on both sides of the U-shaped member, and snap rings are installed in the grooves. The snap ring can be flat, as Figure 9 shown, or it can be a wire ring with a circular cross-section.

[0059] Embodiment Eight:

[0060] This embodiment is an improvement of the above embodiment and is a refinement of the limiting facility in the above embodiment. The limiting facility described in this embodiment is a groove 5012 provided on the cross bar, the sleeve is provided with a pin shaft 804, and an elastic button 805 and a return spring (not shown in the figure) are provided on the pin shaft, as Figure 10 、11 as shown

[0061] In this embodiment, a button with elastic reset is adopted. A key is installed on this button. This key can be inserted into the groove to form a limit. And as long as the button is pressed, the key can be taken out from the groove, and the U-shaped member can be very conveniently taken out from the cross bar, facilitating the disassembly and assembly of the U-shaped member from the cross bar.

[0062] Finally, it should be noted that the above is only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred arrangement, those of ordinary skill in the art should understand that the technical solution of the present invention (such as the form of the hinge, the form of the U-shaped member, and the operation mode, etc.) can be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A thermal transfer cup wrapping machine with quick-release buckles, comprising: A last that is installed on a bracket for fixing a workpiece and can move up and down. A rectangular workbench is provided below the last. A semi-circular depression that matches the outer circle of the workpiece is provided in the middle of the workbench. A heat transfer paper and an elastic fastening skin that wraps the workpiece and the heat transfer paper are sequentially placed on the workbench from top to bottom. Cross bars are provided at both ends of the elastic fastening skin. Four rocker arms that are opposite to each other in pairs are provided on both sides of the lifting workbench. One end of the rocker arm is connected to a rotary power mechanism, and a hook that can latch onto the cross bar is provided at the other end. Elastic fastening skins and heat transfer paper positioning blocks that can adjust positions are provided on the four sides of the workbench. The length of the cross bars on both sides of the elastic fastening skin is greater than the width of the rectangular elastic fastening skin. It is characterized in that the part of the cross bar extending out of the elastic fastening skin is set as the hinge shaft of a hinge. The sleeve of the hinge is connected to one leg of a U-shaped member. The other leg of the U-shaped member is a hook for hooking another cross bar of the elastic fastening skin, and the elastic fastening skin and the heat transfer paper are wrapped around the outer circular surface of the workpiece for fixation.

2. The cup wrapping machine according to claim 1, characterized in that, The tip of the hook is triangular, and the triangle is connected to the semi-circular depression. The radius of curvature of the semi-circular depression matches the radius of the cross bar.

3. The cup wrapping machine according to claim 2, wherein, There are two U-shaped members, which are arranged on the same side of the rectangular elastic fastening skin.

4. The cup wrapping machine according to claim 2, wherein, There are two U-shaped members, which are arranged diagonally on the rectangular elastic fastening skin.

5. The cup wrapping machine according to any one of claims 1-4, characterized in that, A limiting facility for restricting the axial movement of the sleeve along the cross bar is provided on the cross bar.

6. The cup wrapping machine according to claim 5, characterized in that, The limiting facility is a protrusion provided on the cross bar.

7. The cup wrapping machine according to claim 5, characterized in that, The limiting facility is a groove provided on the cross bar, and a snap ring is provided in the groove.

8. The cup wrapping machine according to claim 5, characterized in that, The limiting facility is a groove provided on the cross bar. A pin shaft is provided on the sleeve, and an elastic button and a return spring are provided on the pin shaft.

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