A printing and dyeing process for plastic products

Abstract

The present invention discloses a printing and dyeing process for plastic products, which relates to the technical field of plastic product processing, and includes the following steps: a loading operation, clamping and placing the plastic product on a first clamping component until the end of the plastic product reaches the end limit component, using the end limit component to fix and clamp the end of the plastic product, and using the first clamping component to clamp and fix the inner wall of the plastic product; a printing and dyeing operation; a drying operation, using the drying component to heat the plastic product after printing and dyeing; and a unloading operation. The present application sets an end limit component, and uses the end limit component to limit and clamp the end of the cylindrical plastic product, and the end limit component can also buffer the rebound force when the cylindrical plastic product is squeezed to a certain extent, thereby ensuring the printing and dyeing position of the plastic product and avoiding the problem of poor printing and dyeing quality caused by the position movement of the plastic product.

Description

Technical Field

[0001] The invention relates to the technical field of plastic product processing, in particular to a plastic product printing and dyeing process. Background Art

[0002] Plastic products are products made from plastic as raw materials. Plastic is extruded, injected or blown to form products with a certain spatial shape. In order to facilitate product identification, logos with certain shapes are usually printed on plastic products. The usual printing and dyeing method is to place the product into a printing and dyeing machine, print a certain pattern on it, and then dry it.

[0003] For cylindrical plastic products, especially plastic products such as cylindrical cups, when processing the above plastic products, the plastic products are sleeved on the installation sleeve, and then the installation sleeve drives the plastic products to rotate, so that the plastic products are evenly printed and dyed on the printing plane.

[0004] In the above technical solution, when installing the plastic product on the installation sleeve, it is necessary to use a clamping device to install the plastic product. When the cylindrical plastic product is dropped, the clamping device is required to clamp the plastic product to achieve the drop, so as to load and unload the plastic product from the installation sleeve. In this process, the end of the cylindrical plastic product needs to be tightly pressed against the fixed position to achieve the limit of the end of the plastic product. When the clamping device is relaxed, the cylindrical plastic product will be pressed due to the large pressure. When printing and dyeing, the inner wall of the plastic product is smooth. When the inner wall of the plastic product is clamped, The friction force is small, the clamping is unstable, and the plastic products are prone to slip. Therefore, the end of the cylindrical plastic product will have a certain rebound at the fixed position, causing the plastic product to slide when clamped on the inner wall, resulting in a certain error in the printing position of the cylindrical plastic product. When the cylindrical plastic product is unloaded, the clamping device clamps the end of the plastic product to transfer its position. At this time, the clamping position may be clamped to the printing position, resulting in a small amount of contact between the printed surface that has not yet dried and the clamping device, causing the printed pattern to be smeared, affecting the printing quality. Summary of the invention

[0005] The purpose of the present invention is to provide a printing and dyeing process for plastic products.

[0006] The technical problem solved by the present invention is to solve the problem in the prior art that when printing and dyeing cylindrical plastic products, the position of the cylindrical plastic products will move, thereby affecting the printing quality of the plastic products.

[0007] The present invention can be implemented by the following technical scheme: A plastic product printing and dyeing process comprises the following steps:

[0008] Step 1: Loading operation: clamp the plastic product on the first clamping assembly until the end of the plastic product reaches the end limit assembly, use the end limit assembly to fix and clamp the end of the plastic product, and use the first clamping assembly to clamp and fix the inner wall of the plastic product;

[0009] Step 2, printing and dyeing operation, the clamped plastic product is rotated and moved under the printing and dyeing plane, the outer surface of the plastic product is attached to the printing and dyeing plane, and the plastic product is printed and dyed through the fixed model on the printing and dyeing plane;

[0010] Step 3: Drying operation: using a drying component to heat the plastic product after printing and dyeing, transferring the temperature to the printed and dyed surface of the plastic product through the plastic product, and drying the printed and dyed surface of the plastic product;

[0011] Step 4, unloading operation, release the clamping effect on the plastic product through the first clamping component, release the clamping effect on the plastic product using the end limit component, and pop out the plastic product using the end limit component to realize automatic unloading of the plastic product.

[0012] A further technical improvement of the present invention is that when the end limit assembly is in use, the end of the plastic product is extruded on the second truncated cone support block, the first sliding rod moves relative to the extrusion of the plastic product, and the extrusion protrusion adaptively moves relative to the shapes of the first truncated cone support block and the second truncated cone support block until the extrusion protrusion is located at the bottom of the second truncated cone support block, the bottom of the second truncated cone support block is limited, and the extrusion protrusion is extruded on the outer surface of the plastic product under the action of the second clamping spring, and at the same time, the arc-shaped clamping base clamps the plastic product through the action of the fixed connecting plate.

[0013] A further technical improvement of the present invention is that when the first clamping assembly is in use, the first telescopic rod is shortened, driving the angle of the hinged connecting rod to change, controlling the internal support plate to slide on the clamping shell, clamping the internal support plate on the inner surface of the plastic product, and clamping the inside of the plastic product.

[0014] A further technical improvement of the present invention is that when printing and dyeing is carried out on the printing and dyeing plane, the moving scraper evenly coats the printing and dyeing raw materials inside the material box on the printing and dyeing plane while moving, and the moving speed of the moving scraper is synchronized with the moving speed of the plastic product. The moving scraper uses a certain pressure to press the printing and dyeing raw materials onto the plastic product to print and dye the plastic product.

[0015] A further technical improvement of the present invention is that when the drying assembly is dried, drying gas is introduced into the bucket-shaped supporting shell, and the drying gas passes through the bucket-shaped supporting shell from the gas through hole to reach the inside of the plastic product, thereby heating the plastic product.

[0016] A further technical improvement of the present invention is that when the first clamping assembly releases the clamping, the first telescopic rod extends, driving the angle of the hinged connecting rod to change, sliding the internal support plate on the clamping shell, and moving the internal support plate away from the inner surface of the plastic product, thereby releasing the clamping effect on the plastic product.

[0017] A further technical improvement of the present invention is that when the end limit assembly is released from clamping, the second telescopic rod is shortened and the position of the extrusion protrusion is adjusted until the extrusion protrusion is located at the edge of the second truncated cone support block. Under the action of the first pop-up spring, the first sliding rod slides, driving the second truncated cone support block to slide and pop out the plastic product, thereby realizing automatic unloading of the plastic product.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present application sets an end limit component, and uses the end limit component to limit and clamp the end of the cylindrical plastic product, and the end limit component can also buffer the rebound force when the cylindrical plastic product is squeezed to a certain extent. Specifically, when the plastic product squeezes the second truncated cone support block, the first pop-up spring is squeezed. At this time, the squeezing protrusion will move along the connection shape of the first truncated cone support block and the second truncated cone support block, so that the force exerted on the second clamping spring changes until the squeezing protrusion is located below the second truncated cone support block, so that the bottom of the second truncated cone support block is limited by the squeezing protrusion, and the squeezing force of the first pop-up spring is borne to avoid the rebound force exerted on the plastic product. At the same time, the squeezing protrusion will be against the outer surface of the plastic product under the action of the second clamping spring, and the outer surface of the plastic product is clamped by the arc-shaped clamping base. Further, the second telescopic rod can be used to maintain the clamping force to avoid the movement of the plastic product, thereby ensuring the printing and dyeing position of the plastic product, avoiding the problem of poor printing and dyeing quality caused by the position movement of the plastic product, and ensuring the printing and dyeing effect and efficiency of the plastic product.

[0020] 2. The present application controls the position of the top mounting plate by shortening the first telescopic rod, thereby controlling the angle of the hinged connecting rod, and further controlling the sliding of the internal support plate in the clamping shell, controlling the sliding position of the adjacent internal support plates, and using the internal support plates to clamp and fix the inside of the plastic product. When printing and dyeing the plastic product, the internal support plates are used to further fix the plastic product to avoid movement of the position of the plastic product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the structure of the end limit assembly of the present invention;

[0023] Figure 2 It is a schematic diagram of the external structure of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the first clamping assembly of the present invention;

[0025] Figure 4 It is a schematic diagram of the position of the end limit assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the drying component of the present invention;

[0027] Figure 6 It is a schematic diagram of the position of the driving motor of the present invention;

[0028] Figure 7 It is a schematic diagram of the printing and dyeing plane position of the present invention.

[0029] In the figure: 1, driving motor; 2, first supporting shell; 3, drying assembly; 31, connecting support rod; 32, bucket-shaped supporting shell; 33, gas passing hole; 4, first clamping assembly; 41, supporting base; 42, first telescopic rod; 43, offset supporting slide; 44, internal supporting plate; 45, hinged connecting rod; 46, top hinge seat; 47, top mounting plate; 48, side hinge seat; 5, end limit assembly; 51, first limit base; 52, first sliding rod; 53 , first pop-up spring; 54, first truncated cone support block; 55, second truncated cone support block; 56, clamping protrusion; 57, arc-shaped clamping base; 58, fixed connecting plate; 59, third sliding rod; 510, third limiting base; 511, second mounting plate; 512, second sliding rod; 513, second limiting base; 514, second clamping spring; 515, second telescopic rod; 516, extrusion protrusion; 6, movable support seat; 7, movable scraper; 8, material box; 9, printing and dyeing plane. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] See also Figure 1-7 As shown, a plastic product printing and dyeing process comprises the following steps:

[0032] Step 1: Loading operation: clamp the cylindrical plastic product with the external clamping device, so that the plastic product is placed on the first clamping component 4, until the end of the plastic product reaches the end limit component 5, and the end of the plastic product is fixedly clamped by the end limit component 5;

[0033] Step 2: Printing and dyeing operation: the clamped plastic product is rotated and moved below the printing and dyeing plane 9, so that the outer surfaces of the cylindrical plastic product are respectively attached to the printing and dyeing plane 9, and the cylindrical plastic product is printed and dyed using the fixed shape on the printing and dyeing plane 9;

[0034] Step 3: Drying operation: the cylindrical plastic product is heated by the drying component 3, thereby preliminarily drying the printed and dyed surface coated on the outer surface of the cylindrical plastic product to form a plastic product with a logo pattern on the outer surface;

[0035] Step 4, blanking operation, the first clamping component 4 releases the clamping of the inside of the plastic product, and then the end limit component 5 rebounds the plastic product, so that the plastic product is ejected from the end limit component 5, which is convenient for direct blanking operation of the plastic product.

[0036] That is, firstly, the cylindrical plastic product is placed on the first clamping component 4 until the plastic product reaches the end limit component 5, and the plastic product is directly clamped by the end limit component 5, and then the first clamping component 4 is used for secondary clamping to realize the clamping and installation of the plastic product; then, the plastic product is moved and rotated so that the outer surface of the plastic product and the printing and dyeing plane 9 are attached, and the outer surface of the plastic product is printed and dyed by using the mold shape on the printing and dyeing plane 9; then, the plastic product is heated by using the drying component 3 to realize the drying effect of the printing and dyeing raw materials to prevent the logo pattern on the outer surface of the plastic product from being scratched; finally, the plastic product is directly rebounded by using the rebound effect of the end limit component 5, and the plastic product is ejected from the first clamping component 4, so as to automatically realize the unloading of the plastic product.

[0037] When the end limit assembly 5 is in use, the end of the plastic product will be squeezed on the second truncated cone support block 55, causing the first sliding rod 52 to move, thereby causing the first pop-up spring 53 to be squeezed. At this time, the squeezing protrusion 516 follows the shape of the first truncated cone support block 54 and the second truncated cone support block 55. The squeezing protrusion 516 is located at the bottom of the second truncated cone support block 55, limiting the position of the second truncated cone support block 55. At this time, the first pop-up spring 53 is subjected to squeezing force, and the plastic product on the second truncated cone support block 55 is automatically clamped under the rebound action of the second clamping spring 514. At the same time, the arc-shaped clamping base 57 follows the rebound action of the second clamping spring 514, and the arc-shaped clamping base 57 is used to clamp the plastic product.

[0038] When the first clamping assembly 4 is in use, the first telescopic rod 42 is shortened, driving the angle of the hinged connecting rod 45 to change, thereby sliding the internal support plate 44 on the clamping shell, clamping the internal support plate 44 on the inner surface of the plastic product, and clamping the inside of the plastic product.

[0039] When printing and dyeing is carried out on the printing and dyeing plane 9, the mobile scraper 7 is moved under the action of the moving power. At this time, the moving power can be any one of a slide rail, an electric telescopic rod, a screw rod, etc. to realize that the moving scraper 7 slides inside the material box 8, and the printing and dyeing raw materials inside the material box 8 are evenly coated on the printing and dyeing plane 9. The moving speed of the moving scraper 7 and the moving speed of the plastic product are kept constant, so that when the moving scraper 7 is pressed on the plastic product with a certain pressure, the printing and dyeing raw materials are coated on the plastic product, thereby realizing the printing and dyeing operation on the plastic product.

[0040] When the drying component 3 is drying, drying gas is introduced into the bucket-shaped supporting shell 32, wherein the drying gas is a gas with a certain temperature. The drying gas reaches the interior of the plastic product from the gas through hole 33, preliminarily heats the plastic product, and then the drying gas is discharged.

[0041] When the first clamping assembly 4 releases its clamping, the first telescopic rod 42 extends, driving the angle of the hinged connecting rod 45 to change, thereby sliding the internal support plate 44 on the clamping shell, and removing the internal support plate 44 from the inner surface of the plastic product, thereby releasing the clamping effect on the plastic product and facilitating automatic unloading of the plastic product.

[0042] When the end limit assembly 5 is released from use, the second telescopic rod 515 is shortened and the position of the extrusion protrusion 516 is adjusted until the extrusion protrusion 516 is located at the edge of the second truncated cone support block 55. At this time, under the action of the first pop-up spring 53, the first sliding rod 52 slides, driving the second truncated cone support block 55 to pop out the plastic product. At this time, the extrusion protrusion 516 is located in the middle position between the first truncated cone support block 54 and the second truncated cone support block 55. The second telescopic rod 515 is released, and under the action of the second clamping spring 514, the extrusion protrusion 516 is squeezed into the middle position between the first truncated cone support block 54 and the second truncated cone support block 55.

[0043] First, the end limit assembly 5 is located inside the first support shell 2, wherein the first support shell 2 is fixed on the drive motor 1, and the drive motor 1 is used to drive the first support shell 2 to rotate, thereby realizing the rotation control of the plastic product.

[0044] The end limit assembly 5 includes a first truncated cone support block 54 and a second truncated cone support block 55, wherein the first truncated cone support block 54 and the second truncated cone support block 55 are fixedly connected, and the smaller end of the first truncated cone support block 54 and the smaller end of the second truncated cone support block 55 are fixedly connected, and a first sliding rod 52 is fixedly installed on the first truncated cone support block 54, wherein the first sliding rod 52 is slidably connected to the first support shell 2, and a first limit base 51 is fixed to the end of the first sliding rod 52, wherein the first limit base 51 is located outside the first support shell 2;

[0045] A second sliding rod 512 and a third sliding rod 59 are arranged on the side of the first supporting shell 2, wherein a third limiting base 510 is fixed to the end of the third sliding rod 59, and a second limiting base 513 is fixed to the end of the second sliding rod 512, wherein an arc-shaped clamping base 57 is fixed to the end of the third sliding rod 59, and an extrusion protrusion 516 is fixed to the end of the second sliding rod 512, wherein the extrusion protrusion 516 is conical, and the extrusion protrusion 516 cooperates with the first truncated cone support block 54 and the second truncated cone support block 55;

[0046] In order to achieve the retraction of the arc-shaped clamping base 57 and utilize the pop-up effect of the first pop-up spring 53, a second telescopic rod 515 is fixed inside the first supporting shell 2, wherein a fixed connecting plate 58 is fixed to the end of the second telescopic rod 515, wherein the fixed connecting plate 58 is fixed on the third sliding rod 59, and a second clamping spring 514 is arranged between the first supporting shell 2 and the second limiting base 513, wherein the second clamping spring 514 is sleeved on the second sliding rod 512.

[0047] The specific process is as follows: first, the outer end of the cylindrical plastic product will be squeezed on the second truncated cone support block 55, so that the first sliding rod 52 moves. At this time, the first pop-up spring 53 is compressed. At this time, the squeezing protrusion 516 enters the bottom of the second truncated cone support block 55 along the shape of the first truncated cone support block 54 and the second truncated cone support block 55 to block the second truncated cone support block 55. At this time, under the action of the second clamping spring 514, the squeezing protrusion 516 is squeezed on the outside of the plastic product, and at the same time, the arc-shaped clamping base 57 is driven to clamp the arc-shaped clamping base 57 on the plastic product to further clamp the plastic product. At the same time, the second telescopic rod 515 is used to ensure the clamping force. A clamping protrusion 56 is fixed on the arc-shaped clamping base 57 to increase friction, ensure the stability of clamping, and prevent the plastic product from rotating. During this process, the extrusion protrusion 516 can be automatically restricted on the second truncated cone support block 55 by the second clamping spring 514. At this time, the extrusion force of the first pop-up spring 53 will be offset by the extrusion protrusion 516. At this time, the sliding of the extrusion protrusion 516 is used to directly clamp the outside of the plastic product to avoid the slight sliding that may occur when the plastic product enters the end, thereby ensuring the position of the plastic product. At the same time, the clamping protrusion 56 is used to increase the friction force on the clamping part of the plastic product to further avoid the sliding of the plastic product.

[0048] The first clamping assembly 4 includes a support base 41, wherein the support base 41 is fixed on the clamping shell, and a first telescopic rod 42 is fixed on the support base 41, wherein a top mounting plate 47 is fixed to the end of the first telescopic rod 42, and a top hinge seat 46 is fixed to the top mounting plate 47, and an articulated connecting rod 45 is hingedly arranged on the top hinge seat 46, wherein the other end of the articulated connecting rod 45 is hingedly connected to a side articulated seat 48, wherein the side articulated seat 48 is fixedly mounted on an internal support plate 44, wherein a staggered support slide 43 is fixed on the side of the internal support plate 44, wherein the position of the staggered support slide 43 and the internal support plate 44 are staggered by half, and the staggered support slide 43 and the clamping shell are slidably connected.

[0049] The specific usage process is that the top mounting plate 47 is moved downward by shortening the first telescopic rod 42, thereby adjusting the angle of the hinged connecting rod 45, so that the internal support plate 44 is moved on the clamping shell, thereby moving the internal support plate 44 to the inner wall of the plastic product, thereby achieving a fixed clamping effect on the plastic product and avoiding displacement of the plastic product during the printing process.

[0050] The drying component 3 includes a connecting support rod 31, wherein the connecting support rod 31 is fixedly mounted on the inner wall of the first supporting shell 2, a bucket-shaped supporting shell 32 is fixed at the end of the connecting support rod 31, and gas through holes 33 are evenly opened on the bucket-shaped supporting shell 32, wherein the gas pipeline passes through the first supporting shell 2 to reach the bucket-shaped supporting shell 32, and finally the gas flows out through the gas through holes 33, and the drying gas heats the inside of the plastic product, thereby preliminarily drying the printing and dyeing raw materials.

[0051] In the present application, the bucket-shaped support shell 32 is bucket-shaped, and is used to achieve that under the action of the first pop-up spring 53, when the plastic product is ejected, the plastic product slides along the bucket-shaped support shell 32, which facilitates the unloading of the plastic product.

[0052] The driving motor 1 is fixed on the movable support seat 6, and the movable support seat 6 can be moved, that is, the movable support seat 6 can be installed on the output end of the slide rail, the power end of the telescopic rod or the power output end of the screw rod to drive the entire device to move for printing and dyeing.

[0053] When the present invention is in use, the plastic product is first passed from the first clamping component 4 through the drying component 3 and pressed against the second truncated cone support block 55, squeezing the second truncated cone support block 55 so that the first sliding rod 52 slides on the first supporting shell 2. At this time, the first pop-up spring 53 is squeezed, and the squeezing protrusion 516 slides along with the second sliding rod 512. At this time, the second clamping spring 514 changes adaptively until the squeezing protrusion 516 is located below the second truncated cone support block 55. The squeezing protrusion 516 is used to bear the squeezing force of the first pop-up spring 53. At this time, the squeezing protrusion 516 is squeezed on the outer surface of the plastic product under the action of the second clamping spring 514. At the same time, the arc-shaped clamping base 57 is clamped on the outer surface of the plastic product. The elongation of the second telescopic rod 515 is used to ensure the clamping effect of the arc-shaped clamping base 57. The clamping protrusion 56 is used to increase the clamping friction to ensure the stability of the plastic product clamping.

[0054] Then, the top mounting plate 47 is driven to move longitudinally by shortening the first telescopic rod 42, and the angle of the hinged connecting rod 45 is changed, and the internal support plate 44 is pushed to move, so that the offset support slide bar 43 moves along the clamping shell, and the internal support plate 44 is clamped to the inner surface of the plastic product, so as to further clamp the plastic product and ensure the clamping effect of the plastic product;

[0055] Then, the driving motor 1 is used to drive the device as a whole to rotate, and at the same time, the movable support seat 6 is driven to move, so that the outer surface of the plastic product is attached to the printing and dyeing plane 9, and the printing and dyeing raw materials in the material box 8 are moved through the printing and dyeing plane 9 by the movement of the movable scraper 7, so that the printing and dyeing raw materials are printed on the outer surface of the plastic raw materials through the movable scraper 7;

[0056] Then, the warm gas is blown into the interior of the bucket-shaped support shell 32, and then the warm gas enters the interior of the plastic product through the gas through hole 33 to preliminarily heat the plastic product, thereby preliminarily drying the printing and dyeing raw materials to prevent the printing and dyeing raw materials from being scratched during subsequent use;

[0057] Subsequently, the first telescopic rod 42 is extended to control the internal support plate 44 to move away from the inner wall of the plastic product, and the clamping of the plastic product is initially relaxed. Subsequently, the second telescopic rod 515 is shortened to control the extrusion protrusion 516 to be retracted until the extrusion protrusion 516 is located at the edge of the second truncated cone support block 55. Under the action of the first pop-up spring 53, the second truncated cone support block 55 is pushed to push the plastic product to pop out and fall, thereby achieving the initial falling of the plastic product. Under the action of the bucket-shaped support shell 32, the plastic product slides along the action of the bucket-shaped support shell 32, and while having downward power, it has a falling inertia, thereby achieving the falling collection of the plastic product.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A printing and dyeing process for plastic products, Features: The following steps are involved: Step 1: Loading operation: clamping and placing the plastic product on the first clamping assembly (4) until the end of the plastic product reaches the end stop assembly (5), using the end stop assembly (5) to fix and clamp the end of the plastic product, and using the first clamping assembly (4) to clamp and fix the inner wall of the plastic product; Step 2, printing and dyeing operation, the clamped plastic product is rotated and moved under the printing and dyeing plane (9), the outer surface of the plastic product is attached to the printing and dyeing plane (9), and the plastic product is printed and dyed through the fixed model on the printing and dyeing plane (9); Step 3: Drying operation, using the drying component (3) to heat the plastic product after printing and dyeing, and transferring the temperature to the printed and dyed surface of the plastic product through the plastic product, thereby drying the printed and dyed surface of the plastic product; Step 4: unloading operation, releasing the clamping effect on the plastic product by using the first clamping component (4), releasing the clamping effect on the plastic product by using the end stop component (5), and ejecting the plastic product by using the end stop component (5), thereby realizing automatic unloading of the plastic product; The first clamping assembly (4) comprises a support base (41), the support base (41) is fixed on the clamping shell, a first telescopic rod (42) is fixed on the support base (41), a top mounting plate (47) is fixed on the end of the first telescopic rod (42), a top hinge seat (46) is fixed on the top mounting plate (47), and a hinged connecting rod (45) is hingedly arranged on the top hinge seat (46), the other end of the hinged connecting rod (45) is hingedly connected to a side hinge seat (48), the side hinge seat (48) is fixedly mounted on the internal support plate (44), a staggered supporting slide bar (43) is fixed on the side of the internal support plate (44), the positions of the staggered supporting slide bar (43) and the internal support plate (44) are staggered by half, and the staggered supporting slide bar (43) and the clamping shell are slidably connected; The end stop assembly (5) comprises a first truncated cone support block (54) and a second truncated cone support block (55); the first truncated cone support block (54) and the second truncated cone support block (55) are fixedly connected, and the smaller end of the first truncated cone support block (54) is fixedly connected to the smaller end of the second truncated cone support block (55); a first sliding rod (52) is fixedly mounted on the first truncated cone support block (54); the first sliding rod (52) and the first support shell (2) are slidably connected; a first stop base (51) is fixedly mounted on the end of the first sliding rod (52); the first stop base (51) is located outside the first support shell (2); A second sliding rod (512) and a third sliding rod (59) are provided on the side of the first supporting shell (2); a third limiting base (510) is fixed to the end of the third sliding rod (59); a second limiting base (513) is fixed to the end of the second sliding rod (512); an arc-shaped clamping base (57) is fixed to the end of the third sliding rod (59); an extrusion protrusion (516) is fixed to the end of the second sliding rod (512); the extrusion protrusion (516) is conical, and the extrusion protrusion (516) cooperates with the first truncated cone support block (54) and the second truncated cone support block (55); A second telescopic rod (515) is fixed inside the first supporting shell (2), a fixed connecting plate (58) is fixed to the end of the second telescopic rod (515), the fixed connecting plate (58) is fixed to the third sliding rod (59), a second clamping spring (514) is provided between the first supporting shell (2) and the second limiting base (513), and the second clamping spring (514) is sleeved on the second sliding rod (512).

2. A plastic product printing and dyeing process according to claim 1, It is characterized in that When the end limiting assembly (5) is in use, the end of the plastic product is pressed onto the second truncated cone support block (55), the first sliding rod (52) moves in response to the pressing of the plastic product, and the pressing protrusion (516) adaptively moves in response to the outer shapes of the first truncated cone support block (54) and the second truncated cone support block (55) until the pressing protrusion (516) is located at the bottom of the second truncated cone support block (55), thereby limiting the bottom of the second truncated cone support block (55). The pressing protrusion (516) is pressed onto the outer surface of the plastic product under the action of the second clamping spring (514), and at the same time, the arc-shaped clamping base (57) clamps the plastic product through the action of the fixed connecting plate (58).

3. A plastic product printing and dyeing process according to claim 1, It is characterized in that When the first clamping assembly (4) is in use, the first telescopic rod (42) is shortened, driving the angle of the hinged connecting rod (45) to change, controlling the internal support plate (44) to slide on the clamping shell, and clamping the internal support plate (44) on the inner surface of the plastic product to clamp the inside of the plastic product.

4. A plastic product printing and dyeing process according to claim 1, It is characterized in that When the printing and dyeing plane (9) is being printed and dyed, the movable scraper (7) evenly applies the printing and dyeing material inside the material box (8) onto the printing and dyeing plane (9) while moving. By keeping the moving speed of the movable scraper (7) synchronous with the moving speed of the plastic product, the movable scraper (7) applies a certain pressure to press the printing and dyeing material onto the plastic product, thereby printing and dyeing the plastic product.

5. A plastic product printing and dyeing process according to claim 1, It is characterized in that When the drying assembly (3) is drying, drying gas is introduced into the bucket-shaped supporting shell (32), and the drying gas passes through the bucket-shaped supporting shell (32) and reaches the interior of the plastic product through the gas passing hole (33), thereby heating the plastic product.

6. A plastic product printing and dyeing process according to claim 3, It is characterized in that When the first clamping assembly (4) releases the clamping, the first telescopic rod (42) extends, driving the angle of the hinged connecting rod (45) to change, causing the internal support plate (44) to slide on the clamping shell, and the internal support plate (44) to be moved away from the inner surface of the plastic product, thereby releasing the clamping effect on the plastic product.

7. A plastic product printing and dyeing process according to claim 2, It is characterized in that When the end stop assembly (5) is released from clamping, the second telescopic rod (515) is shortened and the position of the extrusion protrusion (516) is adjusted until the extrusion protrusion (516) is located at the edge of the second truncated cone support block (55). Under the action of the first pop-up spring (53), the first sliding rod (52) slides, driving the second truncated cone support block (55) to slide and pop out the plastic product, thereby realizing automatic unloading of the plastic product.

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