CN100436268C - Bag opening mechanism for automatic bagging machine - Google Patents

Abstract

The bag opening mechanism for automatic bagging machine has turntable shaft, rotation shaft with teleflex and hung lever arm on its two ends, bag opening cylinder and swing link on the hung lever arm, inner opening rod and outer opening rod, inner support board and outer support board, elevating cam and tracking cam on the main rotation shaft and other parts. The present invention has its bag mouth opened and maintained being opened without automatic closing, and this can avoid material escape, raise packing quality and raise packing efficiency.

Description

Bag supporting mechanism for bag packing machine

1. Technical field

The invention relates to a bag-feeding packaging machine capable of automatically packaging granular, lumpy, pulpy or liquid materials such as candy, medicine, beverage and seeds.

2. Background technology

The packaging bags used by the existing bag-feeding packaging machine include ordinary four-side sealed bags, stand-up bags, zipper bags, etc., through the packaging bag (the original three sides have been sealed, only the opened upper opening side needs to be heated) Sealing) in order to complete the packaging of the required materials through the process of bag feeding, bag clamping, opening, filling, heat sealing, shaping and output. Wherein, the opening of the packaging bag only depends on the upper bag opening mechanism and the lower bag opening mechanism to complete the upper and lower opening of the packaging bag, and there is no special bag supporting mechanism to complete the bag opening action. Due to the various styles of packaging bags, different materials and different thicknesses, when the upper and lower bag opening mechanisms open the mouth of the packaging bag, the mouth of the bag may be automatically closed (partially closed) during the feeding process. In this way, the materials may be spilled to the outside of the packaging bag, resulting in waste of materials, unqualified packaging products, and greatly reduced packaging efficiency.

3. Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings, and provide a bag-supporting mechanism for a bag-feeding packaging machine that can keep the opening of the packaging bag effectively opened.

The purpose of the present invention is achieved through the following technical solutions: a bag-supporting mechanism for a bag-feeding packaging machine, a rotating shaft is sleeved in the rotating disk shaft of the packaging machine, a rotating sleeve is installed at the inner end of the rotating shaft, and a rotating shaft is connected at the outer end of the rotating shaft. The suspension arm is equipped with a bag support cylinder and a swing rod connected to each other, and the other end of the swing rod is covered with an inner support rod and an outer support rod, and the inner and outer support rods are respectively connected with inner and outer supporting plates; The drive shaft of the packaging machine is respectively covered with a lifting disc cam and a left and right tracking disc cam. , The right connecting rod is connected with the rotary sleeve on the rotating shaft.

After adopting the structure of the present invention, the rotating shaft is rotated by tracking the disc cam left and right to drive the suspension arm to move between the bag opening station and the feeding station of the packaging machine, and at the same time, the rotating shaft is raised and lowered by the lifting disc cam to drive the suspension arm Lifting, when the cantilever arm moves to the bag opening station and falls to the lowest point, the bag support cylinder works to make the inner and outer supporting plates open the pocket of the packaging bag, and then the cantilever arm moves to the feeding station to achieve The purpose of effectively opening the mouth of the packaging bag. In this way, the materials are prevented from spilling out of the bag, the waste of materials is prevented, the quality of packaging materials is improved, and the packaging efficiency is greatly improved.

4. Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of the installation structure of the bag-stretching mechanism of the bag-feeding packaging machine of the present invention.

Fig. 2 is a top view of the box part of the packaging machine in Fig. 1 .

Fig. 3 is a top view of Fig. 1 (without the box body of the packaging machine, the boom arm is at the bag opening station).

5. Specific implementation

With reference to Fig. 1 to Fig. 3 as can be seen, the bag-supporting mechanism of the bag-type packing machine of the present invention, is covered with rotating shaft 1 in the rotating disk shaft 23 of this packing machine, the inner end of rotating shaft 1 (refers to in the box body 26 of this packing machine One end) is equipped with rotating sleeve 11, and the outer end of rotating shaft 1 (referring to the end outside the rotating disk 32 of this packaging machine) is connected with suspension rod arm 4, and the suspension rod arm 4 is housed on the support bag air cylinder 2 that is connected with each other and fork 3. The other end of the swing rod 3 is covered with an inner strut 18 and an outer strut 19, and the inner and outer struts 18, 19 are respectively connected with inner and outer supporting plates 6, 7; on the transmission spindle 24 of the packaging machine The lifting disc cam 8 and the left and right tracking disc cams 12 are respectively sleeved. The lifting disc cam 8 is connected with the rotary sleeve 11 on the rotating shaft through the shift fork 9. The left and right tracking disc cams 12 pass through the left connecting rod 13 and the rotating arm in turn. 15, the right connecting rod 16 is connected with the rotary sleeve 11 on the rotating shaft.

Wherein the shift fork 9 is installed on the box body 26 of the packaging machine through the shift fork shaft 10 and the bracket 25, the joint of the shift fork 9 and the rotating sleeve 11 is provided with a rolling bearing 14, and the other end of the shift fork 9 is also connected with a return Position spring 33, resets to be beneficial to rotating shaft lifting, and rotating arm 15 is contained on casing 26 bottoms, as shown in Figure 1, Figure 2; 20 are close to each other, as shown in Figure 3; on the suspension arm 4, the outer ends of the inner and outer supporting plates 6, 7 are respectively equipped with a proximity switch 5, so as to facilitate the feeding signal to the feeder of the packaging machine, and the outer end of the turntable shaft 23 Also cover with sub-clip cam rotating shaft 27, sub-clip cam shaft sleeve seat 28 successively, as shown in Figure 1; Transmission main shaft 24 is connected with the right shaft 30 of this packaging machine by bevel gear 29, and right shaft 30 side is connected with branch Degree box 17, as shown in Figure 2.

The working process of the present invention is as follows: first, the suspension arm is at the bag opening station 21, the transmission main shaft rotates to drive the lifting disc cam, and the rotating shaft is lowered through the shift fork and the rotating sleeve, and then the suspension arm is driven to descend. When the suction head of the upper bag opening mechanism of the packaging machine opens the upper pocket of the packaging bag, the suspension arm will drop to the lowest point. The outer pallet props open the mouth of the packaging bag, so that the mouth of the packaging bag remains effectively opened. Then, the motor of the packaging machine works so that the right shaft drives the transmission main shaft to drive the indexing box to rotate, thereby driving the left and right tracking disc cams to rotate the rotating shaft through the left connecting rod, rotating arm, right connecting rod and rotating sleeve in turn, and then driving the suspension The lever arm moves from the bag opening station 21 of the packaging machine to the feeding station 22, and the proximity switch is touched to send a signal to the feeder of the packaging machine to perform the feeding and filling process. Now, the boom arm rises again and gets back to the unpacking station 21 from the feeding station 22.

Claims (2)

1. A bag-supporting mechanism for a bag-feeding packaging machine, characterized in that: a rotary shaft (1) is sleeved in the rotary shaft (23) of the packaging machine, and a rotary sleeve (11) is installed at the inner end of the rotary shaft (1) , the outer end of the rotating shaft (1) is connected with a suspension arm (4), and the suspension arm (4) is equipped with a bag support cylinder (2) and a swing link (3) connected to each other, and the other end of the swing link (3) is covered There are inner support rods (18) and outer support rods (19), and the inner support rods (18) and the outer support rods (19) are respectively connected with inner supporting plates (6) and outer supporting plates (7); Lifting disc cams (8) and left and right tracking disc cams (12) are respectively sleeved on the transmission main shaft (24), and the lifting disc cams (8) correspond to the rotating sleeves (11) on the rotating shaft through shift forks (9). Link, the left and right tracking disc cams (12) are connected with the rotary sleeve (11) on the rotating shaft by the left connecting rod (13), the rotating arm (15), the right connecting rod (16) successively. 2. The bag supporting mechanism of the bag-feeding packaging machine according to claim 1, characterized in that: the other end of the shift fork (9) is connected with a return spring (33).

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