Card folding mechanism

Abstract

The utility model discloses a card folding mechanism which comprises a working table top used for bearing a single paper card transmitted from other mechanisms, a notch is formed in the rear end of the working table top, a card folding head is arranged below the notch in a pivoted mode, and the card folding head can rotate relative to the working table top. The rotating stroke of the folding and clamping head is larger than 90 degrees, the whole folding and clamping head is lower than the working table top at the initial end of the rotating stroke, and the folding and clamping head at least partially fills and covers the notch of the working table top at the tail end of the rotating stroke; barrier strips are respectively arranged on the left and right sides of the working table, and the lower edges of the barrier strips are higher than the working table; the card folding head is provided with a rotating mechanism which drives the card folding head to rotate forwards or reversely. The device is suitable for a thicker packaged object, and can be used for well completing the work of folding the staple bolt mark.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging machinery, and particularly relates to a card folding mechanism. Background Technique

[0002] The card folding and stapling machine is a kind of packaging machinery, which is often used for products such as towels, socks, gloves, etc. Its basic operation process is to fold the printed paper card with a certain thickness and hardness at a set position, so as to fold the rectangular paper card into a U shape, then insert the item to be packaged into the opening of the U-shaped card, and then use a glue gun to drive in glue pins to fix the two ends of the U-shaped card and the packaged item together. Its working process can be divided into three steps. First, a single paper card is drawn from a stack of paper cards, then it is folded into a U shape, and then glue pins are driven in for stapling, which can be simply called card drawing, card folding, and stapling. What the utility model relates to is the card folding part among them.

[0003] CN216333304U discloses a card folding mechanism of a card issuing machine for a packaging machine, including a frame, a turntable structure and a card folding station, and both the turntable structure and the card folding station are installed on the frame; the turntable structure is used to move the card to be bent to the card folding station and to move the bent card away from the card folding station, and a plurality of suction nozzle assemblies for sucking cards are installed on the turntable structure and are circumferentially and evenly distributed; the card folding station includes a pressing structure and a card folding structure, the pressing structure is used to press the card on the suction nozzle assembly located at the card folding station, and the card folding structure is used to bend the card located at the card folding station. The card folding structure includes a second driving member and a top block, the second driving member is fixed on the frame, the top block is fixed on the driving end of the second driving member, the second driving member is used to drive the top block to approach or move away from the card located at the card folding station, the top block is used to squeeze the outer edge of the card located at the card folding station, and a limiting groove for inserting the outer edge of the card is arranged on the inner wall of the top block; by adopting this card folding structure, when the first driving member drives the top block to move towards the card side, the outer edge of the card can first be inserted into the limiting groove, and when the first driving member continues to drive the top block to move towards the card side, the card can be bent.

[0004] The applicant has also applied for a utility model patent for a folding card stapling machine, with the publication number CN219172911U. This folding card stapling machine includes a workbench surface, on which a conveying mechanism and a folding mechanism are provided. The conveying mechanism sends single paper cards to the folding mechanism for folding; there is a long hole on the workbench surface, and a folding knife that can move up and down is installed above the long hole. The lowest position of the folding knife is lower than the workbench surface; a card holder, a card holder base, and a card holder transmission mechanism are installed below the long hole. The card holder has a U-shaped long groove with an upward opening and is installed on the card holder base through the card holder transmission mechanism. The card holder transmission mechanism drives the card holder to perform a linear motion, making it move away from or close to the card holder base; the card holder base can simultaneously rotate around a pivot under the workbench surface, and the rotation direction is parallel to the running direction of the paper card. The folding knife is two parallel thin sheets, and the distance between the two thin sheets is less than the width of the card holder and is matched with the card holder.

[0005] The defect of the above-mentioned prior art is that in some cases, the packaged item is relatively fluffy, making its thickness before packaging appear thicker, and it is difficult to enter the U-shaped opening of the paper card. Summary of the Invention

[0006] The purpose of the present utility model is to overcome the above defects and provide a folding card mechanism that can be used for relatively thick packaged items.

[0007] To this end, the technical solution adopted by the present utility model is as follows: The folding card mechanism includes a workbench surface for receiving single paper cards transmitted from other mechanisms, and is characterized in that: there is a notch at the rear end of the workbench surface, and a pivotally connected folding card head is provided below the notch. The folding card head can rotate relative to the workbench surface; the rotation stroke of the folding card head is greater than 90°. At the initial end of its rotation stroke, the entire folding card head is lower than the workbench surface. At the end of its rotation stroke, the folding card head at least partially fills and covers the notch of the workbench surface; on both the left and right sides of the workbench surface, there are provided retaining bars, and the lower edges of the retaining bars are higher than the workbench surface; the folding card head has a rotating mechanism for driving the folding card head to rotate forward or backward.

[0008] The retaining bars have a transverse movement mechanism for driving the retaining bars to slide towards the middle or both sides.

[0009] The folding card head has a front facade and a protruding leading edge. When the folding card head is at the end, its front facade is in clearance fit with the rear surface of the retaining bar; the lower surface of its leading edge is higher than the upper surface of the retaining bar, and the two are in clearance fit.

[0010] The working process of the present utility model is as follows: The method of folding a card by the card folding mechanism, using the aforementioned card folding mechanism, includes the following steps: When the card folding head is at the initial end, place a single paper card on the workbench surface, with the left and right ends of the paper card under the retaining bars; Rotate the card folding head forward to reach the end, at this time the leading edge of the card folding head pushes the paper card to flip a part of the paper card, forming a U shape; Rotate the card folding head backward by a certain angle, and place the item to be packaged into the U shape of the paper card; Rotate the card folding head forward again to the end, and drive in the glue pins with a glue pin gun.

[0011] In the present utility model, the front and rear of the workbench surface are defined by the moving direction of the paper card, and the two sides of the workbench surface are defined as left and right. At the same time, the workbench surface is placed horizontally, and its vertical direction is up and down, or called high and low. The rotation direction of the card folding head is positive from the initial end to the end, and vice versa.

[0012] When the present utility model is working, when the card folding head rotates forward, it pushes the paper card. The paper card itself has a prefabricated crease. At this time, a part of the paper card is on the workbench surface, and the other part is pushed up by the card folding head. Since the crease of the paper card is blocked by the retaining bar, the paper card is not lifted as a whole, but only the part pushed is lifted, causing the paper card to be bent. As the card folding head continues to rotate forward, the paper card continues to bend until the card folding head rotates to the end position. At this time, the front surface of the card folding head and the rear surface of the retaining bar are in clearance fit, and this clearance is equivalent to the thickness of the paper card, used to accommodate the bottom of the paper card formed into a U shape; The lower surface of the leading edge of the card folding head and the upper surface of the retaining bar are in clearance fit, and this clearance is also equivalent to the thickness of the paper card, used to accommodate the side of the paper card formed into a U shape; It can be seen that at this time, the paper card has been folded into a standard U shape. And the standard U-shaped opening is not conducive to inserting a relatively thick item to be packaged into the U-shaped paper card. Therefore, the next step of the present utility model is to rotate the card folding head backward by a certain angle, which is equivalent to loosening the U shape of the paper card to a certain extent. At this time, the U-shaped opening of the paper card opens, and the angle between the upper and lower layers of the paper card increases, and the item to be packaged can be conveniently inserted. Then rotate the card folding head forward again to the end position, then the paper card returns to the standard U shape, and the item to be packaged has been wrapped in it, and the next step of stapling operation can be carried out.

[0013] It can be seen that the present utility model is applicable to relatively thick items to be packaged and can well complete the work of card folding and stapling. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of this embodiment.

[0015] Figure 2 is the structural schematic diagram of the card folding mechanism.

[0016] Figure 3 is the schematic diagram of the card folding head.

[0017] Figures 4 to 7It is a schematic diagram of the card folding process of the card folding mechanism. DETAILED DESCRIPTION

[0018] See also Figures 1 to 3 This embodiment includes a frame 1, on which are mounted a card extraction mechanism 2, a card folding mechanism 3 and a label nailing mechanism 4, wherein the card extraction mechanism and the label nailing mechanism are prior art, and can be found in another patent CN219172911U of the applicant, and will not be described in detail here, and only the card folding mechanism 3 will be described.

[0019] The folding mechanism includes a table 30, and the table 30 has side edges 301 extending outward on both sides of the rear end, and a gap 302 is formed between the two side edges 301; the side panels 301 are flush with the table 30 in height. A stop bar 32 is provided in front of the side edge 301, and each stop bar 32 is connected to a slider 321, and its lower edge is higher than the table 30. The slider 321 can translate left and right, thereby driving the stop bar 32 to translate toward the middle or to both sides at the same time. A folding card head 31 is pivotally connected below the notch 302. The folding card head has a pivot 311, which is pivotally connected under the two side edges 301. The pivot 311 is connected to the synchronous pulley 33 and is driven by it to rotate in the forward or reverse direction. The main body of the folding card head 31 has a top surface 312, a front facade 313 and a front edge 314. Its rotation driven by the synchronous pulley 33 has a limited angular stroke, one end of which is called the initial end and the other end is called the terminal end. When the folding card head 31 is at the initial end, its highest part, namely the front edge 314, is lower than the table top 30 and does not affect the action of the card drawing mechanism 1. When the folding card head 31 is at the terminal end, its main body roughly fills the notch 302, the lower edge of the front facade 313 is roughly flush with the table top 30, the lower surface of the front edge 314 is perpendicular to the front facade 313, and is about 0.5 mm higher than the upper surface of the baffle 32.

[0020] See also Figures 4 to 7 The card folding method of this embodiment is as follows: Figure 4 As shown, a paper card 00 has been delivered to the table by the card extraction mechanism. At this time, the card folding head 31 is at the initial end, lower than the table 30, and the blocking bar 32 is at the separated position on both sides.

[0021] Then as Figure 5 As shown, the blocking bar 32 has moved toward the middle, and at the same time, the card folding head 31 is driven by the synchronous pulley to rotate forward and hit the paper card 00; since the paper card 00 is blocked by the blocking bar when it is tilted upward, a part of the paper card 00 is bent upward.

[0022] Then as Figure 6As shown, the card folding head rotates to the end, at which time the gap between the front elevation of the card folding head and the stop bar is about 0.5 mm, and the gap between the lower surface of the front edge 314 and the upper surface of the stop bar is also about 0.5 mm, which matches the thickness of the paper card 00 and is used to accommodate the paper card. Since the card folding head has rotated to the end, the part of the paper card that has been pushed is parallel to the table 30, that is, the entire paper card has been folded into a U shape.

[0023] Next, Figure 7 As shown, the folding head 31 rotates in the opposite direction at a certain angle, so that the distance between the front facade and the stop bar, and the front edge and the stop bar increases slightly. At this time, due to its material properties, the part of the paper card 00 pressed by the front edge rises upward again; from the overall observation of the paper card, its U-shaped opening is enlarged again.

[0024] Finally, the packaged object is placed in the U-shaped opening of the paper card, and the card folding head 31 rotates forward to the end again. Figure 6 Fold the paper card into a standard U shape again and do the labeling.

Claims

1. The folding card mechanism, including a workbench surface for receiving single paper cards transferred from other mechanisms, is characterized in that: The rear end of the workbench surface has a notch, and there is a pivotally connected folding chuck below the notch. The folding chuck can rotate relative to the workbench surface. The rotation stroke of the folding chuck is greater than 90°. At the initial end of its rotation stroke, the whole folding chuck is lower than the workbench surface. At the end of its rotation stroke, the folding chuck at least partially fills and covers the notch of the workbench surface. On the left and right sides of the workbench surface, there are retaining bars respectively, and the lower edge of the retaining bar is higher than the workbench surface. The folding chuck has a rotating mechanism to drive the folding chuck to rotate forward or backward.

2. The folding card mechanism according to claim 1, wherein: The retaining bar has a transverse movement mechanism to drive the retaining bar to slide towards the middle or both sides.

3. The folding card mechanism according to claim 1 or 2, characterized in that: The folding chuck has a front facade and a protruding leading edge. When the folding chuck is at the end position, its front facade has a clearance fit with the rear surface of the retaining bar; the lower surface of its leading edge is higher than the upper surface of the retaining bar, and there is a clearance fit between them.

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