JPS60131197A - Punching device for synthetic resin sheets - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The zero punch l:lli relates to a punching device for punching out cards from cardboard, a small sheet of cardboard and a synthetic resin sheet, and the like.

Congpo, this drawing punching device θ was used in 11 Jitsugyo 58-115.
This punching device β', which may have been disclosed in No. 1, punches out each wave from an original plate on which a large number of punched parts are arranged, and then cuts out one piece of sea bream such as a card. There is.

1 J, /'Rice punching top 41+! The outline of steps 1 to 1 and the construction of right 6 for that purpose will be explained in accordance with FIG. 5 as follows.

The female mold (1) is equipped with a hollow punching part 01) that matches the shape of the product. ] The cross-sectional shape (/(constructed) is lowered by the original plate (3) interposed between the solid molds (1) and The product (31) is punched out by the step 01 of the mold and moved downward from the hollow punching section (11).

In this conventional method of punching, the L roller is used as a cover plate (
3) is made of a material that is inferior in terms of rigidity, such as synthetic resin sheets and cardboard, so it bends as shown in figure J61 at the beginning of the punching process, and cannot be punched in one punch in this state. It will be done. Therefore, the punched product (31) has cracks and sag as shown in the same figure, and the precision of the mold has been thoroughly checked.
Even if it is increased, the dimensional viscosity will not be sufficient.

Starting from wood - j i - j The precision of the product after hammering is the best in mold quality! Let the eye MJ be to bring it closer to i.

The technical means of the present invention for achieving the above object will be explained according to the schematic diagram in FIG. A back-up plate is provided at the tip of the lifting ψ+II (5) 1 that is driven up and down by the unloading device M i51, and
The lifting plate or the lifting shaft is connected to the lifting device ifi', i5 in order to unload the load independently from the lowering device.
Connect to i and apply the upper P#H force due to springs or air pressure to the back-up plate, +Jij lifting equipment b
'At the beginning of the punching process using the glue making rack and the mold release (2), the back-up plate (4) is positioned at the upper end of the mold release (2).
In addition, after punching is completed, d';
4) The product removal device is provided on the side of the lowest position.

The above technical means of the present invention operates as follows.

'W-Koshirae f31 l-j: Conventional To III is K M
k a'no f2) 2 females 1J'! fit (!l-c
D171K 1111 is intermittently fed in at a predetermined timing, and when the machine is stopped, the product is punched out.The operation at that time is as follows.

After the original plate (3) has stopped, the force j and 9 (21) are lowered. At this time, the back-up plate (4) is at the maximum position and the female mold (1) is lowered. The same plane as the cutting edge portion (12) is located at a position slightly protruding from the plane.

At the beginning of the punching process when the mold release (2) comes into contact with the original plate (3) K, the part to be punched of the cover plate is the back-up plate (4) and the male die (2).
It is in a state of being held between. Since the back-up plate can move up and down independently of the girder lowering device (5) and is given the upward force of +J, the punching process progresses to the point where it is held in this clamped state. In step 71, step (2), the punched part (the part corresponding to product 01) does not curve as in the conventional case.

Next, the punched product 01) is placed on a back-up board (4).
) and the 0! of the lifting device (5)! Depending on the work/
The cook-asog plate descends and escapes from the female mold (1). In this sliding down position, the product take-out device operates G11i to take out the product on the back-up plate (4) to the outside.

Thereafter, the back-up plate (4) is raised to the highest position by the movement of the lifting device (5) and placed at the initial position, and at the same time, the mold release (2) is also returned to the initial position. Thereafter, the original plate (3) is transferred and the punching process proceeds in the same manner as above.

Since the present invention has two features, it has the following special effects.

(1), the punching process is the male die (2) and the back-up plate (4)
Since the punching process is carried out while holding the punched area of the original plate (3), the curvature of the punched part that occurs in the past does not occur, and the accuracy of one dimension is improved, resulting in improved mold accuracy. It will get closer.

(2) Since the punched product is taken out after each process, it is possible to prevent machining errors caused by the product remaining in the machining area. Also, this direction of extraction is the punching process 814.
Since it is below , the MF type (2) of the group with a crushing defeat and the #iI type il+ can be placed side by side.

Next, to explain the embodiments, one embodiment is as follows.
A non-fact device is provided in the center of the male mold (2), and the knock-act device is created in order to place the product 01) near the lowest position of the male mold (2).

According to this embodiment, the inconvenience of the product 131) being caught in the hollow punched part (11) of the bending die (1) is eliminated, and the collection of the product (31) is ensured.

Below, details of the example of misfire 1 are shown in Section 2, Figures 1 to 4 (l
I will explain based on this.

This example 't' 1rJ1, a male die as a complete punching tool (
2) and jN# type fil (ri answer k assembly kerat
+, -i type f2], +21 group tri 1f1
7< l1ill axis +211, crank f22 provided at one end of +211), (2(a) and link +23
＋.

(2) It can be raised and lowered by a crank mechanism that is combined with 'li.

In addition, the back-up plates (4) are also arranged in the same number of stages according to the number of punching devices 111-', and are arranged separately in the female molds il+, (11), and each of these back-up plates!
1 and lowering shafts (5) are arranged separately, and furthermore, these elevating shafts are integrated at their lower ends by a connecting member 63), and the lower end of the shaft portion 64 which protrudes downward from the center of the connecting member It opposes the first cam t24+ provided on the body O1 shaft (21). In this embodiment, the back-up plate (4) and the lift -t+ +51 are integrated so that the lift shaft (!11) can move up and down independently of the connecting part (5J) within a certain range. 5, and a spring (521) applies a biasing force of 1 bamboo.For this reason, the lower end of the lifting shaft (the lower end of the illusion is connected to the connecting part CS +
A stopper (5a) is provided at the end of the bowl passing through it.

Next, the product ejecting device consists of a swinging lever (6) interlocked with a second cam □□□ provided on the drive shaft (21), and a brush (61) as a product extrusion piece extending at the tip of the swinging lever (6). Become,
The brush moves forward and backward at the lowest position of the back-up plate (4).

That is, when the back-up plate (4) is lowered to the lowest position by the cam pairing with the first cam example, the second cam ρ5
)'s cam protrusion (25a) and the betting side end 162) of the swinging leno
) The lever (6) swings in response to the lift of the conveyor on the other side (31+' and the conveyor on the other side +7+, J
Second, it spreads out. (ty + eyes, T4 + Okasedo,) Since the brush (61) is used here as the product extrusion piece, the movement trajectory of the brush (61) and the back-up plate (4)
's sliding position 1? Even if there is a misalignment in l, brush (61) 4
ffij hair absorbs this gap and rlf the product (31)
lI really conveyor +7+ lll! It can be pushed out to I.

Note: Instead of the 1-type product ejecting device in which the extrusion piece is swung, it is also possible to use a system in which the product removal device mountain is blown away to the conveyor side with air. In this case, d, the extrusion piece Instead, an air outlet is provided and fixed at a predetermined position, and the sliding position Ii' of the back-up plate (4) is
Air at a predetermined pressure may be blown out from the air outlet.

Next, in this embodiment, the drive mechanism includes two drive UJ shafts (21) that are decelerated and driven by one motor (8).
The motors (Ql) are arranged on the same axis, and the motors (8
) and the input shaft (82) of the reduction gear (81) corresponding to the hibernation ωJ @ 2+)Ic are integrally moved by a timing belt. Note that the input shaft of s n0 +117, (82+) Each pulley is a fixture that fixes the rotating body to the shaft using frictional force (Jikkosho 3).
7-2711 (such as that disclosed in H), and is male type (2).

(2) A slight inclination in the longitudinal direction of the mold holding plate provided with (2) can be corrected by finely adjusting the fixed base of this pulley.

The relationship between the crank angle and the first cam (24+, second cam area) is set as shown in Figure 4, and just before the crank @ reaches the bottom dead center, the first cam T24) moves from the maximum lift center to the minimum lift side. Same figure (b)), outside the clan, 71
In the process of moving from the bottom dead center to the top dead center, the shaft portion 541
is in contact with the minimum lift part, and is in contact with the cam protrusion (25a) of the first cam device and the original UJ0 of the swinging lens tf3).
The 11I end (■) is curved so that it is in contact with the other end ((c) in the same figure).

Next, in this embodiment, a method using air blowing is employed as the knockout device, but it is also possible to use a mechanical knockout method.

For example, a method may be adopted in which a knockout bin provided at the center of the male die (2) protrudes downward at the final position of the punching process.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an outline of the preparation of the present invention [F! , FIG. 2 is a detailed explanatory diagram of the present invention, and FIG. 3 is an explanatory diagram of the main parts thereof.
Figure 4 shows the crank@, 1st. Second cam c! 41, - Figure 5 is an explanatory diagram of a conventional example.・・Male type (3)・・・Box plate C
11l... ・'M product 141...
・・・ Noku ・Nori A ・n Tsu board (5)・・
... Lifting device 61) ... Lifting axis agent Patent attorney Yoshiaki Sakagami Figure 2 1 ← 71 Boo〃No -7- 7□ I --1 11 il II 1 . 1 It l Qeasy && 354 \ 27 2 to 24 2- 83 □. Figure 1, Figure 4, Figure 3, Figure 3.

Claims (1)

[Claims] V, the female mold (2) of the male mold (21 and #1 I!j Hollow punching δfs III of the female die (1) in the case where the box is punched into a predetermined shape by fitting into the box sheet metal.
Insert a 7-inch backboard plate (4) into the F lowering shaft (5), which is driven up and down by the lowering device (5).
1 (provided at the tip of the
To move up and down independently from the lifting device described in I.
1 or d Apply upward biasing force by air pressure etc.b iiJ
The operation of the elevating device is such that at the beginning of the punching process using the male die (2), the back-up plate (4) is located at the upper end of the Nf die + I+, and after punching is completed, the back-up plate (4) is positioned downward from the female die (1). A punching device for synthetic resin sheets f, which is set so that it can be easily removed, and a punch-up board (41) with product extraction equipment on the side of the lowest position jry. 2), in the center of the male die (2). A punching device for synthetic resin sheets according to claim 1, which is equipped with a knockout device.