Drying device for woven bag double-face printing

Abstract

The utility model relates to the field of woven bag production, in particular to a drying device for woven bag double-face printing, which comprises a drying mechanism and a conveying mechanism, a plurality of clamping mechanisms are mounted on the circumference of the conveying mechanism at equal intervals, each clamping mechanism comprises a clamping bottom plate, a worm gear is arranged on the upper portion of each clamping bottom plate, and each worm gear is rotatably connected with the corresponding clamping bottom plate. A worm is arranged on one side of the worm gear. The device is provided with the clamping mechanism for tightly supporting the woven bag from the inside, the situation that the double-face printed woven bag is deformed under the action of hot air due to the fact that the double-face printed woven bag is not tightly supported in the drying process is avoided, the tight supporting mechanism of the device can replace tight supporting racks and retraction racks of the corresponding lengths, then the woven bags of different specifications are clamped, and the drying efficiency is improved. Hot and humid air in the drying mechanism is sucked out through the air inducing pipe and is dried, harmful substances are adsorbed, meanwhile, air curtains are installed at openings in the two sides of the drying mechanism, air circulation inside and outside the drying mechanism can be effectively reduced, and heat waste is reduced.

Description

Technical Field

[0001] The utility model relates to the field of woven bag production, in particular to a drying device for double-sided printing of woven bags. Background Art

[0002] Woven bags are mainly made of chemical plastics such as polyethylene and polypropylene through processes such as extruding films, cutting, unidirectional stretching into flat filaments, and then warp and weft weaving. The surfaces of woven packaging bags usually need to print manufacturer or product information. For large-scale production, inks with relatively low costs are often used for printing. Therefore, after printing, the woven bags need to be dried.

[0003] After retrieving the patent document with the publication number of CN211451694U, the device in this patent document is provided with a hot air blower at the bottom of the housing, a rotating seat is installed above the hot air blower, and a plurality of ventilation pipes for sleeving woven bags are provided on the rotating seat. During the drying process, the rotating seat rotates to dry the woven bags.

[0004] The device in this patent document needs to batchwise sleeve the woven bags into the ventilation pipes in the device and cannot continuously dry the woven bags. The size of the ventilation pipes used to stretch the woven bags in this device cannot be adjusted according to the sizes of different specifications of woven bags, so that the woven bags cannot be ensured to be tightened, which may cause the woven bags to deform during drying. When drying double-sided printed woven bags, it is necessary to treat the possible harmful gases and also prevent the heat dissipation in the drying mechanism. Content of the Utility Model

[0005] The purpose of the utility model is to provide a drying device for double-sided printing of woven bags to solve the above problems.

[0006] The utility model realizes the above purpose through the following technical solutions:

[0007] A drying device for double-sided printing of woven bags includes a drying mechanism and a conveying mechanism, and is characterized in that: a plurality of clamping mechanisms are installed at equal circumferential intervals on the conveying mechanism;

[0008] The clamping mechanism includes a clamping bottom plate. A worm gear is provided above the clamping bottom plate, and the worm gear is rotatably connected to the clamping bottom plate. A worm is provided on one side of the worm gear, and the worm is meshed with the worm gear. A gear is arranged at one axial end of the worm. A connecting rod is fixedly connected to the upper end of the worm gear. Two L-shaped rods are rotatably connected to both ends of the connecting rod, and the L-shaped rods are symmetrically arranged about the axis of the worm gear. A strut is provided at one end of each of the two L-shaped rods away from the connecting rod, and the L-shaped rod is rotatably connected to the bottom end of the strut. The two struts pass through a sliding shaft near the bottom end, and the two struts are arranged oppositely along the sliding shaft. The two ends of the sliding shaft are fixedly installed on the clamping bottom plate. A tightening rack for driving the worm gear to rotate is provided at the input end of the conveying mechanism, and a retracting rack for driving the worm gear to rotate is provided at the output end of the conveying mechanism.

[0009] Preferably, the conveying mechanism includes a plurality of plates, and the plurality of plates are connected in series by an endless chain to form a conveying plate chain. There are web plates on both sides of the conveying plate chain, and support rollers are provided at both ends of the endless chain. A motor is fixedly installed at the input end of the support roller, and the conveying plate chain passes through the drying mechanism. The bottom end of the clamping bottom plate is fixedly connected to a single plate at the middle position.

[0010] Preferably, one end of the tightening rack away from the teeth is fixedly installed on the upper end of the web plate on one side of the drying input end of the conveying mechanism, and the teeth of the tightening rack face upward. A support frame is fixed to the upper end of the web plate on one side of the drying output end of the conveying mechanism, and a retracting rack is fixedly installed on the support frame close to the clamping mechanism, and the teeth of the retracting rack face downward.

[0011] Preferably, the drying mechanism includes a housing. Openings through which the clamping mechanism can pass are provided on both sides of the housing. Two inclined bosses are symmetrically provided on the inner bottom surface of the housing near the drying input end. A hot air blower is installed on each boss of the housing. A hole for connecting the air outside the housing is opened at the bottom of each of the two hot air blowers. A return air duct is provided at the top of the housing near the drying output end, and the other end of the return air duct is connected to the bottom of the housing. An air guiding device for sending air to the return air duct is provided on the inner top surface of the housing.

[0012] Preferably, a drying chamber and an adsorption chamber are installed in the vertical part of the return air duct, and the drying chamber is above the adsorption chamber.

[0013] Preferably, air curtains are installed above the openings on both sides of the housing.

[0014] The beneficial effects compared with the prior art are as follows: The device is provided with a clamping mechanism for tightly supporting the woven bag from the inside, which avoids the deformation of the double-sided printed woven bag during drying due to lack of tight support under the action of hot air. Moreover, the tightening mechanism of the device can replace the tightening rack and the retracting rack with corresponding lengths, so as to clamp woven bags of different specifications. The humid and hot air in the drying mechanism is sucked out through the air guiding pipe and dried and the harmful substances are adsorbed. At the same time, air curtains are installed at the openings on both sides of the drying mechanism, which can effectively reduce the air circulation inside and outside the drying mechanism and reduce heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of a drying device for double-sided printing of woven bags according to the present invention;

[0017] Figure 2 It is a top view cross-sectional view of a drying device for double-sided printing of woven bags according to the present utility model;

[0018] Figure 3 It is a front-side cross-sectional view of a drying device for double-sided printing of woven bags according to the present utility model;

[0019] Figure 4 It is a schematic structural diagram of a clamping mechanism of a drying device for double-sided printing of woven bags according to the present utility model;

[0020] Figure 5 It is a partial part drawing of a clamping mechanism of a drying device for double-sided printing of woven bags according to the present utility model;

[0021] Figure 6 It is a partial part drawing of a retracting rack of a drying device for double-sided printing of woven bags according to the present utility model;

[0022] Figure 7 It is a partial part drawing of a conveying mechanism of a drying device for double-sided printing of woven bags according to the present utility model.

[0023] The description of the reference numerals is as follows:

[0024] 1. Clamping mechanism; 101. Clamping bottom plate; 102. Worm gear; 103. Worm; 104. Tightening rack; 105. Retracting rack; 106. Connecting rod; 107. L-shaped rod; 108. Support rod; 109. Sliding shaft; 110. Support frame; 2. Drying mechanism; 201. Housing; 202. Hot air blower; 203. Air curtain; 204. Return air duct; 205. Drying chamber; 206. Adsorption chamber; 3. Conveying mechanism; 301. Plate; 302. Motor; 303. Support roller; 304. Endless chain; 305. Web. Detailed implementation manners

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] The present utility model will be further described below with reference to the drawings:

[0027] As Figures 1-7As shown in the figure, a drying device for double-sided printing of woven bags includes a drying mechanism 2 and a conveying mechanism 3, and is characterized in that: a plurality of clamping mechanisms 1 are installed at equal circumferential intervals on the conveying mechanism 3;

[0028] In this embodiment: The clamping mechanism 1 includes a clamping bottom plate 101. A worm gear 102 is provided above the clamping bottom plate 101. The worm gear 102 is rotatably connected to the clamping bottom plate 101. A worm 103 is provided on one side of the worm gear 102. The worm 103 is meshed and connected to the worm gear 102. A gear is provided at one axial end of the worm 103. A connecting rod 106 is fixedly connected to the upper end of the worm gear 102. Two L-shaped rods 107 are rotatably connected to both ends of the connecting rod 106, and the L-shaped rods 107 are symmetrically arranged about the axis of the worm gear 102. A support rod 108 is provided at one end of each of the two L-shaped rods 107 away from the connecting rod 106, and the L-shaped rod 107 is rotatably connected to the bottom end of the support rod 108. The two support rods 108 pass through a sliding shaft 109 near the bottom end. The two support rods 108 are arranged oppositely along the sliding shaft 109. Both ends of the sliding shaft 109 are fixedly installed on the clamping bottom plate 101. When the worm 103 rotates, the worm 103 drives the worm gear 102 to rotate through meshing, and then drives the connecting rod 106 to rotate. When the connecting rod 106 rotates, it drives the two L-shaped rods 107 at both ends of the connecting rod 106 to move away from or close to each other, and further enables the two support rods 108 rotatably connected to the L-shaped rods 107 to move away from or towards each other along the sliding shaft 109, so as to tighten or loosen the inserted woven bag. Moreover, the worm gear 102 and the worm 103 have a self-locking performance when meshed, so as to ensure that the woven bag remains in a tightened state during the drying process.

[0029] In this embodiment: The conveying mechanism 3 includes a plurality of plate pieces 301. The plurality of plate pieces 301 are connected in series by an annular chain 304 to form a conveying plate chain. Side plates 305 are provided on both sides of the conveying plate chain. Support rollers 303 are provided at both ends of the annular chain 304. A motor 302 is fixedly provided at the input end of the support roller 303. The conveying plate chain passes through the drying mechanism 2. The bottom end of the clamping bottom plate 101 is fixedly connected to a single plate piece 301 at the middle position. A plurality of clamping mechanisms 1 are installed through the conveying plate chain composed of the plurality of plate pieces 301 and the annular chain 304, so as to realize continuous transmission of woven bags to the drying mechanism 2.

[0030] In this embodiment: One end of the tensioning rack 104 away from the teeth is fixedly installed at the upper end of the side web 305 of the drying input end of the conveying mechanism 3, and the teeth of the tensioning rack 104 face upward. A support frame 110 is fixedly installed at the upper end of the side web 305 on one side of the drying output end of the conveying mechanism 3. A retracting rack 105 is fixedly installed on the support frame 110 close to the clamping mechanism 1, and the teeth of the retracting rack 105 face downward. When the clamping mechanism 1 passes through the tensioning rack 104, the lower end of the gear of the worm 103 meshes with the tensioning rack 104 and moves, causing the worm 103 to rotate clockwise, and then causing the struts 108 to move away from each other to open the woven bag. When the clamping mechanism 1 passes through the retracting rack 105, the upper end of the gear of the worm 103 meshes with the retracting rack 105 and moves, causing the worm 103 to rotate counterclockwise, and then causing the struts 108 to move towards each other to loosen the woven bag for easy removal. If the specification of the woven bag to be dried is changed, the corresponding length of the tensioning rack 104 and the retracting rack 105 are replaced, so as to ensure that the clamping mechanism 1 tightens woven bags of different sizes.

[0031] In this embodiment: The drying mechanism 2 includes a housing 201. Openings through which the clamping mechanism 1 can pass are formed on both sides of the housing 201. Two inclined bosses are symmetrically arranged on the inner bottom surface of the housing 201 near the drying input end. A hot air blower 202 is installed on each boss of the housing 201. A hole for connecting the air outside the housing 201 is formed at the bottom of each of the two hot air blowers 202. An air return pipe 204 is provided at the top on one side of the housing 201 near the drying output end. The other end of the air return pipe 204 is connected and communicated with the bottom of the housing 201. An air guiding device for sending air to the air return pipe 204 is provided on the inner top surface of the housing 201. Through the two hot air blowers 202 in the drying mechanism 2, hot air circulates in the drying mechanism 2 to dry the double-sided printed woven bag on the clamping mechanism 1. The air return pipe 204 continuously sucks out the humid hot air in the drying mechanism 2 and passes it into the drying mechanism 2 again after treatment.

[0032] In this embodiment: A drying chamber 205 and an adsorption chamber 206 are installed on the vertical part of the air return pipe 204, and the drying chamber 205 is above the adsorption chamber 206. The drying chamber 205 absorbs the moisture in the inhaled humid hot air, and the adsorption chamber 206 can adsorb the harmful substances volatilized when the double-sided printed woven bag is dried by using activated carbon, which is beneficial to environmental protection.

[0033] In this embodiment: Air curtains 203 are installed above the openings on both sides of the drying mechanism 2. The hot air in the drying mechanism 2 may escape from the openings on both sides of the drying mechanism 2 to the external environment, resulting in waste of heat. By installing air curtains 203 at the openings on both sides of the drying mechanism 2 respectively, the exchange of air inside and outside the drying mechanism 2 can be reduced, and heat loss can be reduced.

[0034] Working principle: When drying a double-sided printed woven bag, the woven bag is put on the support rod 108. When the clamping mechanism 1 passes through the tightening rack 104, the lower end of the gear of the worm 103 meshes with the tightening rack 104 and moves, causing the worm 103 to rotate clockwise. When the worm 103 rotates, the worm 103 drives the worm wheel 102 to rotate through meshing, and then drives the connecting rod 106 to rotate. When the connecting rod 106 rotates, the L-shaped rods 107 at both ends of the connecting rod 106 move away from or close to each other, and then the two support rods 108 rotatably connected to the L-shaped rods 107 move away from each other along the sliding shaft 109, so as to tighten the put-on woven bag. Moreover, when the worm wheel 102 and the worm 103 are meshed, they have a self-locking property, so as to ensure that the woven bag remains in a tightened state during the drying process;

[0035] When the clamping mechanism 1 passes through the retracting rack 105, the upper end of the gear of the worm 103 meshes with the retracting rack 105 and moves, causing the worm 103 to rotate counterclockwise, and then causing the support rods 108 to move towards each other to loosen the woven bag for easy removal;

[0036] If the specification of the woven bag to be dried is changed, the corresponding length of the tightening rack 104 and the retracting rack 105 are replaced, so as to ensure that the clamping mechanism 1 tightens woven bags of different sizes;

[0037] The rotating part of the motor 302 drives the support roller 303 at its end to rotate. The rotation of the support roller 303 drives the conveying plate chain composed of the plate pieces 301 and the annular chain 304 to rotate. Immediately, the conveying plate chain on the web plate 305 drives a plurality of clamping mechanisms 1 and the woven bag to pass through the drying mechanism 2;

[0038] Two hot air blowers 202 in the housing 201 make hot air flow in the housing 201 to dry the double-sided printed woven bag on the clamping mechanism 1. The return air duct 204 continuously sucks out the humid hot air in the housing 201. The high molecular water absorbent resin in the drying chamber 205 absorbs the moisture in the passing air. The adsorption chamber 206 can use activated carbon to adsorb the harmful substances volatilized when drying the double-sided printed woven bag, which is beneficial to environmental protection. The treated hot air is then passed into the housing 201 again;

[0039] The hot air in the housing 201 may escape from the openings on both sides to the external environment, resulting in waste of heat. Air curtains 203 are respectively installed at the openings on both sides of the housing 201, which can reduce the exchange of air inside and outside the drying mechanism 2 and reduce heat loss.

[0040] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A drying device for double-sided printing of woven bags, comprising a drying mechanism (2) and a conveying mechanism (3), characterized in that: The conveying mechanism (3) is provided with a plurality of clamping mechanisms (1) at equal intervals in the circumferential direction; The clamping mechanism (1) comprises a clamping base plate (101), a worm wheel (102) is provided on the upper part of the clamping base plate (101), the worm wheel (102) is rotatably connected to the clamping base plate (101), a worm (103) is provided on one side of the worm wheel (102), the worm (103) is meshingly connected to the worm wheel (102), a gear is provided on one axial end of the worm (103), a connecting rod (106) is fixedly connected to the upper end of the worm wheel (102), and L-shaped rods (107) are rotatably connected at both ends of the connecting rod (106), and the L-shaped rods (107) are rotationally symmetrically arranged about the axis of the worm wheel (102), and the two L-shaped rods (107) are arranged to be rotatably connected to the axis of the worm wheel (102). 07) A support rod (108) is provided at one end away from the connecting rod (106), and the L-shaped rod (107) is rotatably connected to the bottom end of the support rod (108), the two support rods (108) pass through a sliding shaft (109) near the bottom end, the two support rods (108) are set up opposite to each other along the sliding shaft (109), and the two ends of the sliding shaft (109) are fixedly installed on the clamping base plate (101), the input end of the conveying mechanism (3) is provided with a clamping rack (104) for driving the worm gear (103) to rotate, and the output end of the conveying mechanism (3) is provided with a retracting rack (105) for driving the worm gear (103) to rotate.

2. A drying device for double-sided printing of woven bags according to claim 1, characterized in that: The conveying mechanism (3) comprises a plurality of plates (301), wherein the plurality of plates (301) are connected in series via an annular chain (304) to form a conveying plate chain, spoke plates (305) are provided on both sides of the conveying plate chain, support rollers (303) are provided at both ends of the annular chain (304), an electric motor (302) is fixedly provided at the input end of the support roller (303), the conveying plate chain passes through the drying mechanism (2), and the bottom end of the clamping bottom plate (101) is fixedly connected to a single plate (301) at a middle position.

3. A drying device for double-sided printing of woven bags according to claim 2, characterized in that: The end of the tensioning rack (104) away from the teeth is fixedly mounted on the upper end of the spoke plate (305) on the side of the drying input end of the conveying mechanism (3), and the teeth of the tensioning rack (104) face upwards; a support frame (110) is fixedly mounted on the upper end of the spoke plate (305) on the side of the drying output end of the conveying mechanism (3); the retracting rack (105) is fixedly mounted on the side of the support frame (110) close to the clamping mechanism (1), and the teeth of the retracting rack (105) face downwards.

4. A drying device for double-sided printing of woven bags according to claim 1, characterized in that: The drying mechanism (2) comprises a shell (201), openings capable of passing the clamping mechanism (1) are provided on both sides of the shell (201), two inclined bosses are symmetrically provided on the inner bottom surface of the shell (201) near the drying input end, each boss of the shell (201) is mounted with a hot air blower (202), and each bottom of the two hot air blowers (202) is provided with a hole capable of communicating with the air outside the shell (201), a return air duct (204) is provided on the top of the shell (201) near the drying output end, the other end of the return air duct (204) is connected to the bottom of the shell (201), and an air induction device for supplying air to the return air duct (204) is provided on the inner top surface of the shell (201).

5. A drying device for double-sided printing of woven bags according to claim 4, characterized in that: A drying chamber (205) and an adsorption chamber (206) are installed on the vertical portion of the return air duct (204), and the drying chamber (205) is above the adsorption chamber (206).

6. A drying device for double-sided printing of woven bags according to claim 4, characterized in that: Air curtains (203) are respectively installed above the openings on both sides of the shell (201).

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