A tractor

Abstract

The present application relates to the technical field of traction machine, and specifically discloses a traction machine which can be used in cooperation with an injection machine, and is provided with an upper conveying mechanism and a lower conveying mechanism in a traction area, wherein the lower conveying mechanism is additionally provided with a swing arm which can swing around the y-axis, and the swing arm is provided with a fifth pulley, in the initial injection stage of the injection machine, the swing arm can be used to swing the third pulley to the cooling area, so that the third pulley, the fourth pulley and the fifth pulley are linearly arranged along the x-direction, so as to form a waist-shaped structure of the second conveying belt, and one auxiliary guiding area is formed at the end of the second conveying belt which faces the injection machine, and the staff can guide one end of the strip-shaped plastic product which is shot out by the injection head of the injection machine to the auxiliary guiding area, and through the circulating conveying action of the second conveying belt, the strip-shaped plastic product can be conveyed into the conveying interval which is formed between the first conveying belt and the second conveying belt, so as to avoid the hand of the staff to be inserted into the conveying interval, and reduce the safety hazard.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of traction machines, in particular to a traction machine. BACKGROUND

[0002] The production process of injection molding products is that a plurality of plastic master batches are mixed and then put into the blending cavity of an extruder, the mixed material is formed into a molten state through high temperature, is subjected to shearing mixing through a single screw or a double screw to obtain mixed molten material, and is finally discharged through the discharge port of an injection head, is cooled and formed through air cooling or water cooling, and is then pulled to a cutting machine for cutting.

[0003] During use, the injection molding machine is usually used together with a traction machine, and the traction machine is used to pull the strip-shaped plastic product to the cutting machine for cutting. A conventional traction machine can refer to the material belt traction device of the flat needle material belt injection molding machine disclosed in Chinese Patent No. CN205951141U, which comprises a base, a traction mechanism arranged on the base, an intermittent driving mechanism for driving the traction mechanism to intermittently act, the traction mechanism comprises a material belt positioning guide seat and a traction wheel arranged below the material belt positioning guide seat, the traction wheel is in transmission connection with the power output end of the intermittent driving mechanism, the material belt positioning guide seat is provided with a material belt positioning guide groove through which the material belt passes, the bottom of the material belt positioning guide seat is provided with a gap for the material belt to pass through, the traction wheel comprises a shaft portion and two ring portions corresponding to the two lateral side portions of the material belt positioning guide groove respectively, the ring portions extend into the gap, and a plurality of material pushing teeth are distributed on the outer circumferences of the ring portions and can be sequentially engaged into the positioning holes of the flat needle material belt.

[0004] As shown in FIG. 1, in order to quickly cool and form the strip-shaped plastic product 61 discharged from the injection head 60, a cooling area is usually arranged between the injection head 60 and the traction machine, and air cooling or water cooling is usually used for heat dissipation. On the other hand, the strip-shaped plastic product 61 discharged from the injection head 60 needs to be manually guided into the traction channel of the traction machine during the initial discharging stage of the injection machine. The manual pulling method is prone to hand clamping and has great safety hazards. Figure 1 In order to solve the hand clamping problem, some manufacturers design a structure as shown in FIG. 2, that is, a conveying table is arranged between the injection head 60 and the traction machine, and the strip-shaped plastic product 61 is automatically guided into the traction channel of the traction machine by the auxiliary action of the conveying table. On the one hand, the equipment cost is high and the space occupation is large. On the other hand, for some small strip-shaped plastic products 61, the strip-shaped plastic products 61 are easily blown away due to the wind blocking action of the conveying table during air cooling, which affects the subsequent pulling effect.

[0005] Figure 2 Therefore, the prior art still needs to be improved and developed.

[0006] Therefore, the prior art still needs to be improved and developed. SUMMARY​

[0007] In view of the above deficiencies of the prior art, the purpose of the present application is to provide a traction machine to solve the problems of high cost and poor traction effect of the prior art traction machine.

[0008] A traction machine comprises:

[0009] A rack has a cooling zone and a traction zone arranged in sequence along an x direction, and a fan is arranged above the cooling zone along a z direction;

[0010] An upper conveying mechanism comprises a first conveying frame arranged in the traction zone, a first pulley rotatably arranged at both ends of the first conveying frame along the x direction, a second pulley, and a first conveying belt connected with the first pulley and the second pulley;

[0011] A lower conveying mechanism comprises a second conveying frame arranged below the first conveying frame along the z direction, a third pulley rotatably arranged at both ends of the second conveying frame along the x direction, a fourth pulley, a swing arm hingedly connected with one end of the second conveying frame, a fifth pulley rotatably arranged on the swing arm, and a second conveying belt connected with the third pulley, the fourth pulley, and the fifth pulley, wherein a conveying interval for passing materials is formed between the first conveying belt and the second conveying belt, and the swing arm can swing the third pulley to the cooling zone.

[0012] Specifically, the distance of the conveying interval along the z direction is adjustable.

[0013] Specifically, the second conveying frame is fixed to the rack, a first driving device driven along the z direction is fixed outside the second conveying frame, and the output end of the first driving device is in transmission connection with the first conveying frame.

[0014] Specifically, the rack is provided with a guide shaft along the z direction, and a shaft sleeve matched with the guide shaft is fixed outside the first conveying frame.

[0015] Specifically, the traction machine comprises a traction driving mechanism, the traction driving mechanism comprises driving gears connected with the ends of the first pulley, the second pulley, the third pulley, and the fourth pulley, a second driving device for driving any one of the driving gears, a toothed chain matched with the four driving gears on the same side, and an adjusting gear for adjusting the tightness of the toothed chain, and a waist hole is arranged on the first conveying frame for adjusting the installation position of the adjusting gear along the z direction.

[0016] Specifically, the lower conveying mechanism further comprises a bracket fixed to one side of the second conveying frame along a y direction, and a third driving device fixed to the bracket, and the output end of the third driving device is in fixed connection with the swing arm.

[0017] Specific, the first conveying belt, second conveying belt outer surface is provided with a plurality of conveying strip, the conveying strip surface is rough.

[0018] Specific, the first conveying frame inner side is provided with a first connecting plate for supporting the first conveying belt inner side bottom;

[0019] The second conveying frame inner side is provided with a second connecting plate for supporting the second conveying belt inner side bottom.

[0020] The beneficial effects of the present application:

[0021] The traction machine of the present application can be used with an injection machine. A cooling area is arranged on one side of the traction area along the x direction. A fan is arranged above the cooling area. The strip-shaped plastic product injected by the injection machine is first subjected to the air cooling effect of the fan to quickly solidify, thereby avoiding being squeezed and deformed when directly entering the conveying interval, and ensuring the stability of the shape of the plastic product. An upper conveying mechanism and a lower conveying mechanism are arranged in the traction area. The lower conveying mechanism is provided with a swing arm that can swing around the y axis. The swing arm is provided with a fifth pulley. During the initial injection stage of the injection machine, the swing arm can swing the third pulley to the cooling area. The third pulley, the fourth pulley, and the fifth pulley are linearly arranged along the x direction, so that the second conveying belt has a waist-shaped structure. The end of the second conveying belt facing the injection machine forms an auxiliary guide area. The worker can guide the end of the strip-shaped plastic product injected by the injection head of the injection machine to the auxiliary guide area. The strip-shaped plastic product is conveyed into the conveying interval formed between the first conveying belt and the second conveying belt by the circulating conveying action of the second conveying belt. This can avoid the hand of the worker entering the conveying interval, thereby reducing the safety hazard. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Structure diagram of the injection and traction process of the prior art Figure 1 ;

[0023] Figure 2 Structure diagram of the injection and traction process of the prior art Figure 2 ;

[0024] Figure 3 Top view of the traction machine of the present application;

[0025] Figure 4 is Figure 3 Cross-sectional view of A-A in

[0026] Figure 5 Perspective view of the extruder of the present application;

[0027] Figure 6 Front view of the traction machine of the present application in the traction state, the swing arm swings the fifth pulley to below the third pulley;

[0028] Figure 7 The main view of the traction machine in the auxiliary guiding state of the present application, the swing arm swings the fifth pulley below the fan.

[0029] The figure marks are: rack 10, cooling area 101, traction area 102, fan 11, upper conveying mechanism 20, first conveying frame 21, first pulley 22, second pulley 23, first conveying belt 24, lower conveying mechanism 30, second conveying frame 31, third pulley 32, fourth pulley 33, swing arm 34, fifth pulley 35, second conveying belt 36, conveying interval 301, first driving device 37, guide shaft 12, shaft sleeve 13, traction driving mechanism 40, driving gear 41, second driving device 42, toothed chain 43, adjusting gear 44, waist hole 210, support 38, third driving device 39, conveying strip 50, first connecting plate 211, second connecting plate 311, injection head 60, strip-shaped plastic product 61. DETAILED DESCRIPTION

[0030] The present application provides a traction machine, in order to make the purpose, technical scheme and effect of the present application more clear and definite, the following will be further described in detail with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0031] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] As shown in Figures 3 to 7 The present embodiment discloses a traction machine, comprising:

[0033] The rack 10 has a cooling area 101 and a traction area 102 arranged in sequence along the x direction, and the cooling area 101 is provided with a fan 11 above along the z direction;

[0034] The upper conveying mechanism 20 comprises a first conveying frame 21 arranged in the traction area 102, a first pulley 22 and a second pulley 23 rotatably arranged at both ends of the first conveying frame 21 along the x direction, and a first conveying belt 24 connected with the first pulley 22 and the second pulley 23;

[0035] The lower conveying mechanism 30 includes a second conveying frame 31 disposed on the first conveying frame 21 along the z direction downward, a third pulley 32 and a fourth pulley 33 rotatably disposed at both ends of the second conveying frame 31 along the x direction, a swing arm 34 hinged to one end of the second conveying frame 31, a fifth pulley 35 rotatably disposed on the swing arm 34, and a second conveyor belt 36 connected to the third pulley 32, the fourth pulley 33, and the fifth pulley 35. A conveying interval 301 for material passage is formed between the first conveyor belt 24 and the second conveyor belt 36. The swing arm 34 can swing the third pulley 32 to the cooling zone 101.

[0036] The traction machine in this embodiment can be used in conjunction with an injection molding machine. A cooling zone 101 is provided on one side of the traction zone 102 along the x direction. A fan 11 is provided above the cooling zone 101. The strip plastic product that has just been injected by the injection molding machine is first cooled by the fan 11 and quickly solidified, so as to avoid being squeezed and deformed when directly entering the conveying interval 301, thus ensuring the shape stability of the plastic product.

[0037] Furthermore, an upper conveying mechanism 20 and a lower conveying mechanism 30 are provided in the traction zone 102. The lower conveying mechanism 30 is equipped with a swing arm 34 that can swing around the y-axis. The swing arm 34 is equipped with a fifth pulley 35 for rotation. At the beginning of the injection molding process, such as... Figure 7 As shown, the swing arm 34 can be used to swing the third pulley 32 to the cooling zone 101, so that the third pulley 32, the fourth pulley 33, and the fifth pulley 35 are arranged linearly along the x-direction, thereby making the second conveyor belt 36 have a waist-shaped structure. The end of the second conveyor belt 36 facing the injection machine forms an auxiliary guiding area. The operator can guide one end of the strip plastic product injected by the injection head of the injection molding machine to the auxiliary guiding area. The cyclic conveying action of the second conveyor belt 36 will transport the strip plastic product into the conveying interval 301 formed between the first conveyor belt 24 and the second conveyor belt 36, which can avoid the operator's hand from reaching into the conveying interval 301 and reduce safety hazards.

[0038] In addition, after completing the initial stage of assisted guidance, such as Figure 6 As shown, the fifth pulley 35 can be swung below the third pulley 32 by the swing arm 34, so as to avoid the second conveyor belt 36 affecting the wind direction of the fan 11. This ensures the cooling effect of the fan 11 and also avoids the strip plastic products from becoming disordered due to the wind resistance of the second conveyor belt 36, thus affecting the subsequent traction effect.

[0039] For further details, please refer to... Figure 4 In this embodiment, the conveying interval 301 along the z-direction is adjustable, which can be adjusted according to the thickness or outer diameter of the strip plastic product. It is applicable to the traction of various product models and has a wide range of applications.

[0040] For further details, please refer to... Figure 5The second conveying frame 31 of the embodiment is fixed to the rack 10, and a first driving device 37 driving in the z direction is fixed outside the second conveying frame 31. The output end of the first driving device 37 is in transmission connection with the first conveying frame 21. The first conveying frame 21 is driven by the first driving device 37 to move in the z direction, so as to adjust the distance of the conveying interval 301 in the z direction, which is simple to operate.

[0041] As a preferred embodiment, the first driving device 37 of the embodiment adopts a hydraulic cylinder. The hydraulic cylinder can bear a large weight, provide strong lifting force, and meet various lifting requirements. The hydraulic cylinder has good action stability and can realize accurate lifting control.

[0042] It should be noted that the first driving device 37 of the embodiment adopts a hydraulic cylinder, which is only one of the more preferred embodiments. In other embodiments, the first driving device 37 can also adopt a gas cylinder, an electric cylinder, a ball screw module, or other linear driving devices, and is not limited to the hydraulic cylinder of the embodiment.

[0043] Further, referring to Figure 5 The rack 10 of the embodiment is provided with a guide shaft 12 in the z direction. The outer side of the first conveying frame 21 is fixed with a shaft sleeve 13 matched with the guide shaft 12. Through the sliding cooperation of the guide shaft 12 and the shaft sleeve 13, the stability of the first conveying frame 21 moving in the z direction is improved.

[0044] Further, referring to Figure 5 The traction machine of the embodiment includes a traction driving mechanism 40. The traction driving mechanism 40 includes driving gears 41 connected to the end portions of the first pulley 22, the second pulley 23, the third pulley 32, and the fourth pulley 33, a second driving device 42 for driving any one of the driving gears 41, a toothed chain 43 matched with the four driving gears 41 on the same side, and an adjusting gear 44 for adjusting the tightness of the toothed chain 43. The first conveying frame 21 is provided with a waist hole 210 for adjusting the installation position of the adjusting gear 44 in the z direction. The four driving gears 41 are driven by the same second driving device 42 and the toothed chain 43. This can ensure that the first pulley 22, the second pulley 23, the third pulley 32, and the fourth pulley 33 can move synchronously, ensure that the conveying speeds of the first conveying belt 24 and the second conveying belt 36 are consistent, thereby improving the stability of material conveying and avoiding material jamming.

[0045] In addition, the waist hole 210 and the adjusting gear 44 are provided. The installation part of the adjusting gear 44 can adjust the installation position in the z direction in the waist hole 210. When the upper conveying mechanism 20 adjusts the height in the z direction, the installation position of the adjusting gear 44 in the z direction can be appropriately adjusted, so that the second conveying belt 36 is always in a tight state, thereby enabling the second conveying belt 36 to synchronously drive the four driving gears 41, which is a clever structure.

[0046] Further, the second driving device 42 can adopt a servo motor, the servo motor can accurately control the rotating speed, thereby realizing high-precision motion control; the servo motor has excellent response speed, can be rapidly started, stopped and reversed, and is suitable for high-speed motion and frequency.

[0047] Further, please refer to Figure 5 The second conveying mechanism 30 further comprises a support 38 fixed to one side of the second conveying frame 31 along the y direction, and a third driving device 39 fixed to the support 38, and the output end of the third driving device 39 is fixedly connected with the swing arm 34. The third driving device 39 can adopt a servo motor, the servo motor can accurately control the rotating speed, thereby realizing high-precision motion control; the servo motor has excellent response speed, can be rapidly started, stopped and reversed, and is suitable for high-speed motion and frequency.

[0048] Further, please refer to Figure 5 The outer surfaces of the first conveying belt 24 and the second conveying belt 36 are provided with a plurality of conveying strips 50. Since the strip-shaped plastic product has a high temperature, by arranging the conveying strips 50, direct contact of the high-temperature strip-shaped plastic product with the first conveying belt 24 and the second conveying belt 36 can be avoided, and the service life of the first conveying belt 24 and the second conveying belt 36 is improved. The conveying strips 50 can be made of wood, bamboo or other low-thermal-conductivity materials, which can well separate the first conveying belt 24 and the second conveying belt 36 from the strip-shaped plastic product.

[0049] Further, the surface of the conveying strip 50 is rough, specifically, the surface of the conveying strip 50 adopts a wave-shaped structure, which can improve the friction coefficient between the conveying strip 50 and the strip-shaped plastic product, so that the strip-shaped plastic product can be smoothly conveyed.

[0050] Further, please refer to Figure 3 and Figure 4 The inner side of the first conveying frame 21 of the embodiment is provided with a first connecting plate 211 for supporting the inner side bottom of the first conveying belt 24. By supporting the inner side bottom of the first conveying belt 24 through the first connecting plate 211, the conveying stability of the first conveying belt 24 can be improved.

[0051] Moreover, the inner side of the second conveying frame 31 is provided with a second connecting plate 311 for supporting the inner side bottom of the second conveying belt 36. By supporting the inner side bottom of the second conveying belt 36 through the second connecting plate 311, the conveying stability of the second conveying belt 36 can be improved.

[0052] The preferred embodiments of the application are specifically described above, but the application is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the application.

Claims

1. A tractor, characterized in that The utility model relates to a kind of material conveying device, including: Rack (10) with cooling zone (101) sequentially arranged along x direction, traction zone (102), the fan (11) is provided in the upper of cooling zone (101) along z direction; Upper conveying mechanism (20), including first conveying frame (21) arranged in traction zone (102), first pulley (22) rotationally arranged in the both ends of first conveying frame (21) along x direction, second pulley (23), first conveying belt (24) connected with first pulley (22), second pulley (23); Lower conveying mechanism (30), including second conveying frame (31) arranged in the lower of first conveying frame (21) along z direction, third pulley (32) rotationally arranged in the both ends of second conveying frame (31) along x direction, fourth pulley (33), swing arm (34) hinged with one end of second conveying frame (31), fifth pulley (35) rotationally arranged in swing arm (34), second conveying belt (36) connected with third pulley (32), fourth pulley (33), fifth pulley (35), conveying interval (301) for material passing is formed between first conveying belt (24) and second conveying belt (36), swing arm (34) can swing third pulley (32) to cooling zone (101); Second conveying frame (31) is fixed to rack (10), first drive device (37) driven along z direction is fixed outside second conveying frame (31), and output end of first drive device (37) is drivingly connected with first conveying frame (21); The traction machine includes traction drive mechanism (40), traction drive mechanism (40) includes drive gear (41) connected to the end of first pulley (22), second pulley (23), third pulley (32) and fourth pulley (33), second drive device (42) for driving any one of drive gear (41), toothed chain (43) matched with four drive gears (41) on the same side and adjusting gear (44) for adjusting tightness of toothed chain (43), waist hole (210) for adjusting installation position of adjusting gear (44) along z direction is arranged on first conveying frame (21).

2. A tractor as claimed in claim 1, characterised in that The distance of conveying interval (301) along z direction is adjustable.

3. A tractor as claimed in claim 2, wherein Rack (10) is provided with guide shaft (12) along z direction, and shaft sleeve (13) matched with guide shaft (12) is fixed outside first conveying frame (21).

4. A tractor as claimed in claim 1, wherein, Lower conveying mechanism (30) further includes support (38) fixed to one side of second conveying frame (31) along y direction, third drive device (39) fixed to support (38), and output end of third drive device (39) is fixedly connected with swing arm (34).

5. A tractor as claimed in claim 1, wherein, First conveying belt (24) and second conveying belt (36) are provided with a plurality of conveying strips (50) at intervals on outer surface, and the surface of conveying strip (50) is rough.

6. A tractor as claimed in claim 1, wherein, First connecting plate (211) for supporting the bottom of inner side of first conveying belt (24) is arranged on the inner side of first conveying frame (21). The second conveying frame (31) is internally provided with a second connecting plate (311) for supporting the inner bottom of the second conveying belt (36).

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