Traction machine

Abstract

The invention relates to the technical field of traction machines, in particular to a traction machine which can be used in cooperation with an injection machine, an upper conveying mechanism and a lower conveying mechanism are arranged in a traction area, a swing arm capable of swinging around the y axis is additionally arranged on the lower conveying mechanism, and a fifth belt wheel is rotationally arranged on the swing arm. The third belt wheel can be swung to the cooling area by utilizing the swing arm, so that the third belt wheel, the fourth belt wheel and the fifth belt wheel are linearly arranged along the x direction, the second conveying belt is of a waist-shaped structure, and an auxiliary guide area is formed at one end, facing the injection machine, of the second conveying belt; a worker can guide one end of a strip-shaped plastic product ejected by an injection head of an injection molding machine to the auxiliary guide area, and the strip-shaped plastic product is conveyed into the conveying interval formed between the first conveying belt and the second conveying belt under the circulating conveying action of the second conveying belt, so that hands can be prevented from stretching into the conveying interval, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of traction machines, and in particular to a traction machine. Background Art

[0002] The production process of injection molding products is to mix a variety of plastic masterbatches and put them into the blending chamber of the extruder. The mixture is molten after high temperature, and then sheared and mixed by a single screw or a twin screw to obtain a mixed molten material. Finally, it is ejected in rows through the discharge port of the injection head, cooled by air or water, and then pulled to the cutting machine for cutting.

[0003] During the use of the injection molding machine, it is usually necessary to cooperate with a traction machine to pull the strip plastic product to the cutting machine for cutting. Conventional traction machines can refer to a material belt traction device for a flat needle material belt injection molding machine disclosed in Chinese Patent Publication No. CN205951141U, which includes a base, a traction mechanism arranged on the base, and an intermittent driving mechanism for driving the traction mechanism to intermittently move. The traction mechanism includes a material belt positioning guide seat and a traction wheel arranged below the material belt positioning guide seat. The traction wheel is connected to the power output end of the intermittent driving mechanism by transmission. The material belt positioning guide seat is provided with a material belt positioning guide groove through which the feed belt passes. The bottom of the material belt positioning guide seat is provided with a clearance gap that penetrates the material belt positioning guide groove. The traction wheel includes a wheel shaft part and two wheel rim parts corresponding to the two side edges of the material belt positioning guide groove, respectively. The wheel rim part extends into the clearance gap. The outer circumference of the wheel rim part is distributed with a plurality of material-pickling convex teeth that can be sequentially engaged in the positioning holes on the flat needle material belt.

[0004] like Figure 1 As shown, in order to quickly cool and shape the strip-shaped plastic product 61 ejected by the injection head 60, a cooling area is usually set 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, at the beginning of the injection stage of the injection machine, the end of the strip-shaped plastic product 61 ejected by the injection head 60 needs to be manually guided to the traction channel of the traction machine. The manual traction method is prone to pinching the hands, which has a great safety hazard.

[0005] In order to solve the problem of pinching fingers, some manufacturers have designed a Figure 2 In the structure shown, a conveyor table is added between the injection head 60 and the traction machine. The strip-shaped plastic product 61 is automatically guided into the traction channel of the traction machine by utilizing the auxiliary function of the conveyor table. On the one hand, the equipment cost is high and occupies a large space; on the other hand, for some small strip-shaped plastic products 61, when heat is dissipated by air cooling, the strip-shaped plastic product 61 is easily blown away due to the wind blocking effect of the conveyor table, thereby affecting the subsequent traction effect.

[0006] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0007] In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a traction machine to solve the problems of high equipment cost and poor traction effect of the traction machine in the prior art.

[0008] A traction machine, comprising: The frame has a cooling zone and a traction zone arranged in sequence along the x-direction, and a fan is arranged above the cooling zone along the z-direction; The upper conveying mechanism comprises a first conveying frame arranged in the traction area, a first belt pulley and a second belt pulley rotatably arranged at both ends of the first conveying frame along the x direction, and a first conveying belt connected with the first belt pulley and the second belt pulley; The lower conveying mechanism includes 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 hinged to one end of the second conveying frame, a fifth pulley rotatably arranged on the swing arm, and a second conveyor belt connected to the third pulley, the fourth pulley and the fifth pulley, a conveying interval for passing materials is formed between the first conveyor belt and the second conveyor belt, and the swing arm can swing the third pulley to the cooling zone.

[0009] Specifically, the distance of the conveying interval along the z direction is adjustable.

[0010] Specifically, the second conveying frame is fixed to the frame, a first driving device driving along the z-direction is fixed to the outer side of the second conveying frame, and an output end of the first driving device is drivingly connected to the first conveying frame.

[0011] Specifically, the frame is provided with a guide shaft along the z-direction, and a shaft sleeve matching with the guide shaft is fixed on the outer side of the first conveying frame.

[0012] Specifically, the traction machine includes a traction drive mechanism, which includes a driving gear connected to 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 matching the four driving gears on the same side and an adjusting gear for adjusting the tightness of the toothed chain, and the first conveying frame is provided with a waist hole for the adjusting gear to adjust the installation position along the z direction.

[0013] Specifically, the lower conveying mechanism also includes a bracket fixed to one side of the second conveying frame along the y direction, and a third driving device fixed to the bracket, and the output end of the third driving device is fixedly connected to the swing arm.

[0014] Specifically, a plurality of conveying strips are arranged at intervals on the outer surfaces of the first conveyor belt and the second conveyor belt, and the surfaces of the conveying strips are rough surfaces.

[0015] Specifically, the first conveyor frame is provided with a first connecting plate on the inner side for supporting the inner bottom of the first conveyor belt; The inner side of each of the second conveying frames is provided with a second connecting plate for supporting the inner bottom of the second conveying belt.

[0016] Beneficial effects of the present invention: The traction machine of the present invention can be used in conjunction with an injection molding machine. A cooling zone is arranged on one side of the traction zone along the x direction, and a fan is arranged above the cooling zone. The strip plastic product just injected by the injection molding machine is first quickly solidified by the air cooling effect of the fan, so as to avoid being squeezed and deformed by directly entering the conveying interval, thereby ensuring the shape stability of the plastic product; an upper conveying mechanism and a lower conveying mechanism are arranged in the traction zone, and a swing arm that can swing around the y axis is added to the lower conveying mechanism. The fifth pulley is provided for the rotation of the swing arm. At the beginning of the injection stage of the injection molding machine, the third pulley can be swung to the cooling zone by the swing arm, so that the third pulley, the fourth pulley and the fifth pulley are linearly arranged along the x direction, so that the second conveyor belt has a waist-shaped structure, and an auxiliary guiding area is formed at one end of the second conveyor belt toward the injection molding machine. The staff can guide one end of the strip plastic product ejected by the injection head of the injection molding machine to the auxiliary guiding area, and the strip plastic product is conveyed into the conveying interval formed between the first conveyor belt and the second conveyor belt by the circulating conveying effect of the second conveyor belt, so that people can avoid reaching into the conveying interval and reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure diagram of the injection and pulling process of the prior art Figure 1 ; Figure 2 The structure diagram of the injection and pulling process of the prior art Figure 2 ; Figure 3 A top view of the traction machine of the present application; Figure 4 for Figure 3 Cross-section of the middle AA surface; Figure 5 A perspective view of the extruder of the present application; Figure 6 This is a front view of the traction machine of the present application in the traction state, and the swing arm swings the fifth pulley to below the third pulley; Figure 7 This is the front view of the traction machine of the present application in the auxiliary guiding state, and the swing arm swings the fifth pulley to below the fan.

[0018] The figures are marked as: frame 10, cooling zone 101, traction zone 102, fan 11, upper conveying mechanism 20, first conveying frame 21, first pulley 22, second pulley 23, first conveyor belt 24, lower conveying mechanism 30, second conveying frame 31, third pulley 32, fourth pulley 33, swing arm 34, fifth pulley 35, second conveyor belt 36, conveying interval 301, first driving device 37, guide shaft 12, bushing 13, traction driving mechanism 40, driving gear 41, second driving device 42, tooth chain 43, adjusting gear 44, waist hole 211, bracket 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

[0019] The present invention provides a tractor. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] like Figures 3 to 7 As shown, this embodiment discloses a traction machine, comprising: The frame 10 has a cooling zone 101 and a traction zone 102 arranged in sequence along the x direction, and a fan 11 is arranged above the cooling zone 101 along the z direction; The upper conveying mechanism 20 includes a first conveying frame 21 disposed in the traction area 102, a first belt pulley 22 and a second belt pulley 23 rotatably disposed at both ends of the first conveying frame 21 along the x direction, and a first conveying belt 24 connected to the first belt pulley 22 and the second belt pulley 23; The lower conveying mechanism 30 includes a second conveying frame 31 arranged below the first conveying frame 21 along the z direction, a third pulley 32 and a fourth pulley 33 rotatably arranged 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 arranged 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 to pass through is formed between the first conveyor belt 24 and the second conveyor belt 36, and the swing arm 34 can swing the third pulley 32 to the cooling zone 101.

[0022] The traction machine of this embodiment can be used in conjunction with an injection molding machine. A cooling zone 101 is set on one side of the traction zone 102 along the x direction, and a fan 11 is set above the cooling zone 101. The strip plastic product just injected by the injection molding machine is first quickly solidified by the air cooling effect of the fan 11 to avoid directly entering the conveying interval 301 and being squeezed and deformed, thereby ensuring the appearance stability of the plastic product.

[0023] Moreover, an upper conveying mechanism 20 and a lower conveying mechanism 30 are provided in the traction area 102. The lower conveying mechanism 30 is provided with a swing arm 34 that can swing around the y-axis. The swing arm 34 is provided with a fifth pulley 35 for rotation. 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 linearly arranged along the x-direction, so that the second conveyor belt 36 has a waist-shaped structure, and the second conveyor belt 36 forms an auxiliary guiding area toward one end of the injection molding machine. The staff can guide one end of the strip plastic product ejected by the injection head of the injection molding machine to the auxiliary guiding area, and the circular conveying action of the second conveyor belt 36 can convey the strip plastic product into the conveying interval 301 formed between the first conveyor belt 24 and the second conveyor belt 36, which can prevent people from reaching into the conveying interval 301 and reduce safety hazards.

[0024] In addition, after completing the initial phase of assisted booting, such as Figure 6 As shown, the fifth pulley 35 can be swung to below the third pulley 32 by the swing arm 34 to prevent the second conveyor belt 36 from affecting the wind direction of the fan 11, thereby ensuring the cooling effect of the fan 11 and preventing the strip plastic products from being disordered due to the wind blocking effect of the second conveyor belt 36, thereby affecting the subsequent traction effect.

[0025] For further information, please refer to Figure 4 In this embodiment, the distance of the conveying interval 301 along the z direction is adjustable, and the distance of the conveying interval 301 along the z direction can be adjusted according to the thickness or outer diameter of the strip plastic product. It can be applicable to the traction of various types of products and has a wide range of applications.

[0026] For further information, please refer to Figure 5 In this embodiment, the second conveyor frame 31 is fixed to the frame 10, and a first driving device 37 driving along the z direction is fixed to the outside of the second conveyor frame 31. The output end of the first driving device 37 is transmission-connected with the first conveyor frame 21. The first driving device 37 drives the first conveyor frame 21 to move along the z direction, thereby adjusting the distance of the conveying interval 301 along the z direction, and the operation is simple.

[0027] As a preferred implementation, the first drive device 37 of this embodiment adopts a hydraulic cylinder, which can withstand a large weight, provide a strong lifting force, and meet various lifting needs; the hydraulic cylinder has good movement stability and can achieve precise lifting control.

[0028] It should be noted that the first driving device 37 of this embodiment adopts a hydraulic cylinder, which is only one of the preferred implementations. In other embodiments, the first driving device 37 can also adopt a linear driving device such as a pneumatic cylinder, an electric cylinder, a ball screw module, etc., and is not limited to the hydraulic cylinder of this embodiment.

[0029] For further information, please refer to Figure 5 The frame 10 of this embodiment is provided with a guide shaft 12 along the z-direction, and a shaft sleeve 13 matching with the guide shaft 12 is fixed to the outside of the first conveying frame 21. The sliding cooperation between the guide shaft 12 and the shaft sleeve 13 improves the stability of the movement of the first conveying frame 21 along the z-direction.

[0030] For further information, please refer to Figure 5 The traction machine of this embodiment includes a traction drive mechanism 40, which includes a driving gear 41 connected to the ends 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 conveyor frame 21 is provided with a waist hole 211 for adjusting the installation position of the adjusting gear 44 along the z direction. The four driving gears 41 are driven by the same second driving device 42 and the toothed chain 43, which can ensure that the first pulley 22, the second pulley 23, the third pulley 32 and the fourth pulley 33 can move synchronously, and ensure that the conveying speed of the first conveyor belt 24 is consistent with that of the second conveyor belt 36, thereby improving the material conveying stability and avoiding material jamming.

[0031] In addition, in this embodiment, by setting a waist hole 211 and an adjusting gear 44, the mounting portion of the adjusting gear 44 can adjust the mounting position along the z direction in the waist hole 211, so that when the height of the upper conveying mechanism 20 is adjusted along the z direction, the mounting position of the adjusting gear 44 along the z direction can be appropriately adjusted, so that the second conveyor belt 36 is always in a tightened state, so that the second conveyor belt 36 can synchronously drive the four driving gears 41, and the structure is ingenious.

[0032] Furthermore, the second drive device 42 can use a servo motor, which can accurately control the rotation speed, thereby achieving high-precision motion control; the servo motor has an excellent response speed, can quickly start, stop and reverse, and adapt to high-speed motion and frequency.

[0033] For further information, please refer to Figure 5The lower conveying mechanism 30 also includes a bracket 38 fixed to one side of the second conveying frame 31 along the y direction, and a third driving device 39 fixed to the bracket 38. The output end of the third driving device 39 is fixedly connected to the swing arm 34. The third driving device 39 can use a servo motor. The servo motor can accurately control the rotation speed, thereby realizing high-precision motion control; the servo motor has an excellent response speed, can quickly start, stop and reverse, and adapt to high-speed motion and frequency.

[0034] For further information, please refer to Figure 5 A plurality of conveyor strips 50 are provided at intervals on the outer surfaces of the first conveyor belt 24 and the second conveyor belt 36. Since the bar-shaped plastic products have a relatively high temperature, the conveyor strips 50 can be provided to prevent the high-temperature bar-shaped plastic products from directly contacting the first conveyor belt 24 and the second conveyor belt 36, thereby improving the service life of the first conveyor belt 24 and the second conveyor belt 36. The conveyor strips 50 can be made of low thermal conductivity materials such as wood and bamboo, and can well separate the first conveyor belt 24, the second conveyor belt 36 from the bar-shaped plastic products.

[0035] Furthermore, the surface of the conveying bar 50 is a rough surface. Specifically, the surface of the conveying bar 50 adopts a wavy structure, which can increase the friction coefficient between it and the bar-shaped plastic product, so that the bar-shaped plastic product can be smoothly conveyed.

[0036] For further information, please refer to Figure 3 and Figure 4 In this embodiment, the first conveying frame 21 is provided with a first connecting plate 211 for supporting the inner bottom of the first conveying belt 24. The first connecting plate 211 supports the inner bottom of the first conveying belt 24, so that the conveying stability of the first conveying belt 24 can be improved.

[0037] Moreover, a second connecting plate 311 for supporting the inner bottom of the second conveyor belt 36 is provided on the inner side of the second conveyor frame 31 . The second connecting plate 311 supports the inner bottom of the second conveyor belt 36 , thereby improving the conveying stability of the second conveyor belt 36 .

[0038] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A traction machine, characterized in that: include: The frame (10) has a cooling zone (101) and a traction zone (102) which are sequentially arranged along the x-direction, and a fan (11) is arranged above the cooling zone (101) along the z-direction; The upper conveying mechanism (20) comprises a first conveying frame (21) disposed in the traction area (102), a first belt pulley (22) rotatably disposed at both ends of the first conveying frame (21) along the x-direction, a second belt pulley (23), and a first conveying belt (24) connected to the first belt pulley (22) and the second belt pulley (23); The lower conveying mechanism (30) comprises a second conveying frame (31) arranged below the first conveying frame (21) along the z direction, a third pulley (32) rotatably arranged at both ends of the second conveying frame (31) along the x direction, a fourth pulley (33), a swing arm (34) hinged to one end of the second conveying frame (31), a fifth pulley (35) rotatably arranged on the swing arm (34), and a second conveying belt (36) connected to the third pulley (32), the fourth pulley (33), and the fifth pulley (35), wherein a conveying interval (301) for passing materials is formed between the first conveying belt (24) and the second conveying belt (36), and the swing arm (34) can swing the third pulley (32) to the cooling zone (101).

2. A traction machine according to claim 1, characterized in that: The distance of the conveying interval (301) along the z direction is adjustable.

3. A traction machine according to claim 2, characterized in that: The second conveying frame (31) is fixed to the frame (10), a first driving device (37) driving along the z-direction is fixed to the outside of the second conveying frame (31), and an output end of the first driving device (37) is drivingly connected to the first conveying frame (21).

4. A traction machine according to claim 3, characterized in that: The frame (10) is provided with a guide shaft (12) along the z-direction, and a shaft sleeve (13) matching with the guide shaft (12) is fixed on the outer side of the first conveying frame (21).

5. A traction machine according to claim 3, characterized in that: The traction machine comprises a traction drive mechanism (40), the traction drive mechanism (40) comprising a driving gear (41) connected to the ends 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 four driving gears (41) on the same side, and an adjusting gear (44) for adjusting the tightness of the toothed chain (43), and the first conveying frame (21) is provided with a waist hole (211) for the adjusting gear (44) to adjust the installation position along the z-direction.

6. A traction machine according to claim 1, characterized in that: The lower conveying mechanism (30) further comprises a bracket (38) fixed to one side of the second conveying frame (31) along the y direction, and a third driving device (39) fixed to the bracket (38), wherein an output end of the third driving device (39) is fixedly connected to the swing arm (34).

7. A traction machine according to claim 1, characterized in that: A plurality of conveying strips (50) are arranged at intervals on the outer surfaces of the first conveying belt (24) and the second conveying belt (36), and the surfaces of the conveying strips (50) are rough surfaces.

8. A traction machine according to claim 1, characterized in that: The first conveying frame (21) is provided with a first connecting plate (211) on the inner side for supporting the inner bottom of the first conveying belt (24); The inner side of each of the second conveying frames (31) is provided with a second connecting plate (311) for supporting the inner bottom of the second conveying belt (36).

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